Limitguard
payment-ready until 2026-10-21
Limitguard checks Dutch and Belgian companies, sales leads, sanctions and wallets for AI agents, paid per call in USDC on Base or Solana.
Call it x402 v2
x402 v2
- Base URL
- https://api.limitguard.ai
- Payment
- x402 v2, header channel
$ curl -i -X POST 'https://api.limitguard.ai/v1/agent/check' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 11 paid routes on api.limitguard.ai
POST/v1/agent/check Base+Sol $0.005since 10-14
GET/v1/compliance/alerts Base+Sol $0.11since 10-14
POST/v1/entity/check Base+Sol $0.29since 10-14
POST/v1/entity/deep-check Base+Sol $0.88since 10-14
POST/v1/kyb/check Base+Sol $0.29since 10-14
POST/v1/leads/verify Base+Sol $0.05since 10-14
POST/v1/reports/entity Base+Sol $0.55since 10-14
POST/v1/reputation/score Base+Sol $0.90since 10-14
3 more in Example 402 response
Prices as captured in the 402 response: median $0.25 across the 11 endpoints, unchanged since first capture.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so. | $0.005 | Base+ | USDC | header | since 10-14 |
| GET | / | Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity. | $0.11 | Base+ | USDC | header | since 10-14 |
| POST | / | Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation. | $0.29 | Base+ | USDC | header | since 10-14 |
| POST | / | Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged. | $0.88 | Base+ | USDC | header | since 10-14 |
| POST | / | Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call. | $0.29 | Base+ | USDC | header | since 10-14 |
| POST | / | Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked. | $0.05 | Base+ | USDC | header | since 10-14 |
| POST | / | Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean. | $0.55 | Base+ | USDC | header | since 10-14 |
| POST | / | Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications. | $0.90 | Base+ | USDC | header | since 10-14 |
| POST | / | Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan. | $0.25 | Base+ | USDC | header | since 10-14 |
| POST | / | Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination. | $0.005 | Base+ | USDC | header | since 10-14 |
| GET | / | ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet. | $0.11 | Base+ | USDC | header | since 10-14 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
Payload 7 of 11 captured by the monitor for POST /v1/agent/check.
357 lines, scroll inside
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/agent/check",
"description": "Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/agent/check",
"description": "Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "Xe5TMntFE1MqbDjfNqDr2HI5EACleyKV",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 5000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "5000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/agent/check",
"description": "Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/agent/check",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"wallet": "0x7e4c2a91d05b3f68a1c9e2d4b7f05a3c6e81d290"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"ran": [
"sanctions",
"balance",
"identity",
"reputation",
"wallet_risk"
],
"domain": {
"domain": null,
"has_mx": null,
"probes": null,
"reason": null,
"status": "not_requested",
"has_spf": null,
"has_dmarc": null,
"ssl_valid": null,
"web_score": null,
"ssl_issuer": null,
"domain_age_days": null,
"domain_expires_at": null
},
"wallet": "0x7e4c2a91d05b3f68a1c9e2d4b7f05a3c6e81d290",
"balance": {
"reason": null,
"status": "ok",
"chain_id": "eip155:8453",
"balance_usdc": 412.5,
"balance_native": 0.0031
},
"verdict": "no_findings",
"chain_id": "eip155:8453",
"identity": {
"reason": null,
"status": "ok",
"agent_id": "1187",
"registry": "erc8004",
"agent_owner": "0x7e4c2a91d05b3f68a1c9e2d4b7f05a3c6e81d290",
"agent_wallet": "0x7e4c2a91d05b3f68a1c9e2d4b7f05a3c6e81d290",
"agent_registered": true,
"wallet_agent_ids": [
"1187"
],
"wallet_controls_agent": true
},
"sanctions": {
"hit": false,
"lists": [],
"reason": null,
"status": "ok",
"programs": [],
"list_as_of": "09/30/2026",
"list_status": "ok"
},
"checked_at": "2026-10-01T10:00:00Z",
"reputation": {
"note": "open on-chain feedback, not used in the score",
"agents": [
{
"agent_id": "1187",
"top_tags": [
{
"avg": 4.67,
"tag": "starred",
"count": 3
}
],
"clients_capped": false,
"feedback_count": 3,
"distinct_clients": 2
}
],
"reason": null,
"status": "ok"
},
"did_not_run": [],
"wallet_risk": {
"reason": null,
"status": "ok",
"risk_level": "low",
"risk_score": 10,
"rules_fired": []
},
"schema_version": "agent-check-v1",
"verdict_reasons": []
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Agent wallet check in one call: screens an EVM wallet against the OFAC SDN digital-currency address list, reads its Base USDC and ETH balance, looks up its ERC-8004 identity registration (and, given an agent id, that agent's owner and payment wallet) and lists open ERC-8004 feedback, which is not scored. Returns one verdict and each part's status; a part that could not be read says so.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"wallet"
],
"properties": {
"domain": {
"type": "string",
"description": "Optional website domain the agent gives for itself; reported, never read by the verdict"
},
"wallet": {
"type": "string",
"description": "EVM wallet address (0x + 40 hex characters), read on Base"
},
"agent_id": {
"type": "string",
"description": "Optional ERC-8004 agentId (decimal) the wallet claims"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
} Other captured 402 responses (10)
Captured payload 1 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "290000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/kyb/check",
"description": "Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "290000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/kyb/check",
"description": "Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "adLPMmwVaXc7IRjVpzg1Q1REN1CT7nAN",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 290000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "290000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/kyb/check",
"description": "Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/kyb/check",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "NL",
"entity_id": "acme-ai",
"registration_number": "12345678"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"verified": true,
"kyb_status": "approved",
"trust_score": 91,
"register_checked": "KVK",
"register_verified": true,
"sanctions_flagged": false
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Know Your Business verification: company registration, sanctions screening, VAT/VIES, and domain analysis in one call.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"entity_id",
"registration_number",
"country"
],
"properties": {
"domain": {
"type": "string",
"description": "Company domain for web presence check"
},
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code"
},
"entity_id": {
"type": "string",
"description": "Internal entity identifier"
},
"vat_number": {
"type": "string",
"description": "VAT number for VIES verification"
},
"entity_name": {
"type": "string",
"description": "Legal entity name (optional)"
},
"registration_number": {
"type": "string",
"description": "Company registration number"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 2 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "880000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/deep-check",
"description": "Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged.",
"maxAmountRequired": "880000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "880000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/deep-check",
"description": "Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged.",
"maxAmountRequired": "880000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "yhUY8S0b5zWSABeeqM2kfvJwxQU2018O",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 880000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "880000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/deep-check",
"description": "Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged.",
"maxAmountRequired": "880000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/entity/deep-check",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "NL",
"entity_name": "Acme B.V."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"country": "NL",
"quality": "deep",
"entity_name": "Jan de Vries",
"pep_extended": {
"matches": [
{
"score": 0.88,
"topics": [
"role.pep"
],
"caption": "Jan de Vries",
"datasets": [
"everypolitician"
],
"countries": [
"nl"
],
"birth_date": "1965-04-12",
"schema_type": "Person"
}
],
"screened": true,
"truncated": false,
"match_count": 1,
"pep_exposure": true,
"retrieved_at": "2026-01-01T00:00:00+00:00"
},
"sources_returned": [
"pep_extended",
"insolvency_records"
],
"insolvency_records": {
"found": false,
"records": [],
"query_by": "name",
"screened": true,
"truncated": false,
"applicable": true,
"match_count": 0,
"jurisdiction": "NL",
"retrieved_at": "2026-01-01T00:00:00+00:00"
},
"processing_time_ms": 420
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Extended screening in two tiers. fresh ($0.88): PEP and relative/close-associate matches from OpenSanctions, plus a Dutch insolvency register screen (NL only). enhanced ($1.71): the same plus adverse media screening. If a tier's source cannot be reached the call returns 503 and is not charged.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"entity_name",
"country"
],
"properties": {
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code"
},
"kvk_number": {
"type": "string",
"description": "Dutch KVK number (8 digits), optional; exact insolvency-register lookup"
},
"entity_name": {
"type": "string",
"description": "Legal entity or person name"
},
"credit_report_identifier": {
"type": "string",
"description": "VAT number, tax code or company ID, optional; enables the `credit` tier's Italian credit report (Italy only, available when enabled)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 3 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "550000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reports/entity",
"description": "Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean.",
"maxAmountRequired": "550000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "550000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reports/entity",
"description": "Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean.",
"maxAmountRequired": "550000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "CrUXfgZOsUmuZrF3AFXmkaLq-RcA1TqG",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 550000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "550000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reports/entity",
"description": "Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean.",
"maxAmountRequired": "550000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/reports/entity",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"pep": {
"status": "ok",
"matches": [],
"exposure": false
},
"risk": {
"cluster": "verified",
"confidence": 0.9,
"trust_level": "high",
"trust_score": 87,
"recommendation": "APPROVE",
"sources_checked": 5
},
"domain": {
"domain": "acme.example",
"status": "ok",
"domain_age_days": 3200
},
"entity": {
"country": "NL",
"entity_name": "Acme Corp BV"
},
"sources": [
{
"source": "opensanctions",
"status": "ok"
}
],
"check_id": "3f9c1e2a-1111-4a2b-9c3d-000000000000",
"evidence": {
"report_hash": "sha256:...",
"hash_algorithm": "sha256"
},
"report_id": "3f9c1e2a-1111-4a2b-9c3d-000000000001",
"sanctions": {
"lists": [],
"result": "no_match",
"status": "ok",
"threshold": 0.7
},
"created_at": "2026-09-24T10:00:00Z",
"correlations": {
"links": [],
"status": "ok",
"scope_note": "workspace_reports"
}
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Per-entity report built from one real check's signals: identity, sanctions and PEP screening, domain signals, trust score (risk.trust_score, 0-100, 100 = best), correlations with the caller's earlier reports, sources and an evidence hash. A source that did not answer is shown unavailable, never clean.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"iban": {
"type": "string",
"description": "IBAN for financial validation"
},
"domain": {
"type": "string",
"description": "Entity website domain"
},
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code"
},
"check_id": {
"type": "string",
"description": "Id of a check stored by an earlier /v1/reports/entity call"
},
"cbe_number": {
"type": "string",
"description": "Belgian CBE number (0XXX.XXX.XXX or 10 digits)"
},
"kvk_number": {
"type": "string",
"description": "Dutch KVK number (8 digits)"
},
"vat_number": {
"type": "string",
"description": "EU VAT number"
},
"entity_name": {
"type": "string",
"description": "Legal entity name"
},
"wallet_chain": {
"type": "string",
"description": "Blockchain the address is checked against"
},
"wallet_address": {
"type": "string",
"description": "Crypto wallet address (format check only; no on-chain lookup)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 4 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/risk/score",
"description": "Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan.",
"maxAmountRequired": "250000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "250000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/risk/score",
"description": "Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan.",
"maxAmountRequired": "250000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "rRX5Nwm-oCIFUNMHuY1qxDhMW3-iDxcK",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 250000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "250000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/risk/score",
"description": "Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan.",
"maxAmountRequired": "250000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/risk/score",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "NL",
"entity_name": "Acme B.V."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"country": "NL",
"risk_level": "low",
"risk_score": 23,
"entity_name": "Acme Corp BV"
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Quick risk score (0-100) for entity name + country. Lightweight check without full data source scan.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"entity_name",
"country"
],
"properties": {
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code"
},
"entity_name": {
"type": "string",
"description": "Legal entity name"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 5 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/leads/verify",
"description": "Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked.",
"maxAmountRequired": "50000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "50000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/leads/verify",
"description": "Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked.",
"maxAmountRequired": "50000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "drGZBjNSWzyH1-iIE2KOhwHrmpVf03-z",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 50000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "50000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/leads/verify",
"description": "Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked.",
"maxAmountRequired": "50000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/leads/verify",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "NL"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"vat": {
"valid": null,
"reason": null,
"checked": false,
"name_match": null
},
"iban": {
"bic": "ABNANL2A",
"bank": "ABN AMRO BANK N.V.",
"last4": "4300",
"valid": true,
"checked": true,
"country": "NL",
"holder_checked": false,
"country_agreement": true
},
"email": {
"has_mx": true,
"checked": true,
"disposable": false
},
"flags": [],
"reason": null,
"company": {
"status": "active",
"sbi_main": "01241",
"age_years": 9.4,
"employees": 1,
"legal_form": "Besloten vennootschap",
"name_match": 1,
"registered": true,
"address_match": 1,
"registered_name": "Test BV Donald",
"address_shielded": false,
"registered_since": "2017-05-19",
"registered_address": {
"city": "Lollum",
"street": "Hizzaarderlaan",
"country": "NL",
"postcode": "8823 SJ",
"house_number": "3 A"
}
},
"icp_fit": null,
"verdict": "real_active",
"findings": [],
"sanctions": {
"hit": false,
"reason": null,
"screened": true,
"lists_as_of": {
"OFAC SDN": "2026-10-01"
}
},
"checked_at": "2026-10-02T10:00:00+00:00",
"lead_score": 95,
"correlations": {
"phone_match": null,
"kbo_contact_match": null,
"kvk_website_match": null,
"kbo_vat_address_match": null,
"website_identifier_match": null
},
"dormant_shell": {
"score": 0,
"flag_at": 50,
"signals": [],
"unknown": [
"no_website",
"no_annual_accounts"
]
},
"schema_version": "lead-verify-v1",
"website_phones": [],
"sources_checked": 4,
"website_phones_reason": "website_phones_disabled",
"discovered_identifiers": [],
"identifier_discovery_reason": "number_given"
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Lead verify for one NL or BE sales lead: is it a real, active company? Checks the KVK or KBO register and cross-checks what the lead holds: VAT with VIES, mail server and disposable domain, IBAN country and bank (not the holder), and the company name against the OFAC, EU and UN sanctions lists. Returns a verdict, a 0-100 lead score and flags, each with one action. An input not given is not checked.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"country"
],
"properties": {
"iban": {
"type": "string",
"description": "IBAN the lead gave; validated locally, only the last 4 are returned"
},
"name": {
"type": "string",
"description": "Company name as the lead gave it"
},
"email": {
"type": "string",
"description": "Contact email; only its domain is checked"
},
"domain": {
"type": "string",
"description": "Company website domain"
},
"address": {
"type": "object",
"properties": {
"city": {
"type": "string"
},
"street": {
"type": "string"
},
"postcode": {
"type": "string"
},
"house_number": {
"type": "string"
}
},
"description": "Address the lead gave, compared with the registered address"
},
"country": {
"type": "string",
"description": "Register country: NL (KVK) or BE (KBO)"
},
"vat_number": {
"type": "string",
"description": "EU VAT number, checked with VIES"
},
"target_size": {
"type": "object",
"properties": {
"max": {
"type": "integer",
"minimum": 0
},
"min": {
"type": "integer",
"minimum": 0
}
},
"description": "Ideal-customer employee range, both ends inclusive. Information only.",
"additionalProperties": false
},
"company_number": {
"type": "string",
"description": "8-digit KVK number or 10-digit KBO/CBE number. company_number or name is required; BE needs company_number"
},
"target_industries": {
"type": "array",
"items": {
"type": "string",
"maxLength": 100
},
"maxItems": 20,
"description": "Ideal-customer industries: SBI/NACE code prefixes (\"62\", \"64.20\") or plain words matched as whole words against the register's activity descriptions. Information only: never changes the score."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 6 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "290000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/check",
"description": "Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "290000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/check",
"description": "Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "x3SSVoAzITYKFilNhG7zEAD8PvMgknA0",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 290000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "290000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/entity/check",
"description": "Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation.",
"maxAmountRequired": "290000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/entity/check",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"country": "NL",
"entity_name": "Acme B.V."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"cluster": "verified",
"country": "NL",
"entity_name": "Acme Corp BV",
"trust_score": 87,
"risk_factors": [],
"recommendation": "APPROVE",
"sources_checked": 7
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Full entity trust check across multiple verification layers: KVK/CBE registry, OpenSanctions, country risk (CPI/FATF), domain WHOIS, IBAN validation and EU VAT/VIES. Returns trust score 0-100 with cluster and recommendation.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"entity_name",
"country"
],
"properties": {
"iban": {
"type": "string",
"description": "IBAN for financial validation"
},
"domain": {
"type": "string",
"description": "Entity website domain"
},
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code"
},
"cbe_number": {
"type": "string",
"description": "Belgian CBE number (0XXX.XXX.XXX or 10 digits)"
},
"kvk_number": {
"type": "string",
"description": "Dutch KVK number (8 digits)"
},
"vat_number": {
"type": "string",
"description": "EU VAT number"
},
"entity_name": {
"type": "string",
"description": "Legal entity name"
},
"target_size": {
"type": "object",
"properties": {
"max": {
"type": "integer",
"minimum": 0
},
"min": {
"type": "integer",
"minimum": 0
}
},
"description": "Ideal-customer employee range, both ends inclusive. Information only.",
"additionalProperties": false
},
"wallet_chain": {
"type": "string",
"description": "Blockchain the address is checked against (eth, base, polygon, arbitrum, btc, sol). Defaults to eth when omitted, so send btc or sol with a Bitcoin or Solana address"
},
"wallet_address": {
"type": "string",
"description": "Crypto wallet address (format check only; no on-chain lookup)"
},
"target_industries": {
"type": "array",
"items": {
"type": "string",
"maxLength": 100
},
"maxItems": 20,
"description": "Ideal-customer industries: SBI/NACE code prefixes (\"62\", \"64.20\") or plain words matched as whole words against the register's activity descriptions. Information only: never changes the score."
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 8 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "110000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/wallet/balance",
"description": "ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "110000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/wallet/balance",
"description": "ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "zxq5NIt2fWkAtMThgnGho-K8xJnjR9VN",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 110000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "110000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/wallet/balance",
"description": "ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/wallet/balance",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"agent_id": "0x1234567890abcdef1234567890abcdef12345678"
}
},
"output": {
"type": "json",
"example": {
"chain": "base",
"agent_id": "0x1234567890abcdef1234567890abcdef12345678",
"currency": "USDC",
"balance_raw": 150500000,
"balance_usdc": 150.5,
"last_updated": 1757894400
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "ERC-8004 agent wallet balance check. Returns the on-chain USDC balance (Base mainnet) for a registered ERC-8004 agent wallet.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"required": [
"agent_id"
],
"properties": {
"agent_id": {
"type": "string",
"description": "Agent wallet address (EVM 0x + 40 hex chars, Base mainnet); must be registered in the ERC-8004 Identity Registry"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 9 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "110000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/compliance/alerts",
"description": "Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "110000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/compliance/alerts",
"description": "Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "8wugBLMpwpZTntGY9XY6xsDKIFTGmOU2",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 110000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "110000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/compliance/alerts",
"description": "Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.",
"maxAmountRequired": "110000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/compliance/alerts",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"severity": "high",
"jurisdiction": "us"
}
},
"output": {
"type": "json",
"example": {
"limit": 50,
"total": 0,
"alerts": [],
"offset": 0
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Daily changes to the OFAC, EU and UN sanctions lists, plus alerts when an entity or wallet this key checked is listed. Poll this route; alerts about entities or wallets this key checked are also sent to a webhook registered for sanctions.match.new (POST /v1/webhooks). Filter by jurisdiction and severity.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"queryParams": {
"type": "object",
"properties": {
"limit": {
"type": "integer",
"description": "Results per page (1-200, default 50)"
},
"offset": {
"type": "integer",
"description": "Pagination offset"
},
"severity": {
"type": "string",
"description": "Filter by severity (informational, low, medium, high, critical)"
},
"jurisdiction": {
"type": "string",
"description": "Filter by jurisdiction of the source list: us, eu or un"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 10 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "900000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reputation/score",
"description": "Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications.",
"maxAmountRequired": "900000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "900000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reputation/score",
"description": "Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications.",
"maxAmountRequired": "900000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "tST6uIMYRNJbgqSdUxN-gtXyVlVM9cLx",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 900000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "900000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/reputation/score",
"description": "Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications.",
"maxAmountRequired": "900000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/reputation/score",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"entity_name": "Acme B.V."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"trend": "stable",
"confidence": 0.87,
"reputation_score": 92,
"verification_count": 12
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Reputation scoring with linear trust decay: after its first week a score loses 2-5 points a week by risk cluster (none for a sanctions-flagged entity), plus a bonus of up to 5 points for repeat verifications.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"entity_name"
],
"properties": {
"cluster": {
"type": "string",
"description": "Current cluster assignment. Send with trust_score to skip auto-computation"
},
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code. Required unless trust_score and cluster are both sent; the score is then computed from sanctions and jurisdiction"
},
"agent_id": {
"type": "string",
"description": "ERC-8004 agent ID for verification"
},
"entity_name": {
"type": "string",
"description": "Legal entity name"
},
"trust_score": {
"type": "integer",
"description": "Latest trust score (0-100). Send with cluster to skip auto-computation"
},
"last_verified_at": {
"type": "number",
"description": "Unix timestamp of last verification (defaults to now)"
},
"verification_count": {
"type": "integer",
"description": "Times entity verified"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Captured payload 11 of 11
{
"error": "Payment Required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2",
"decimals": 6
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/sanctions/screen",
"description": "Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 600
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"name": "USDC",
"version": "2",
"decimals": 6,
"feePayer": "2jMbAFjK2joDBaecvvNDBKU1BTyj3FuvV1ZTmvTkKQu8"
},
"payTo": "P9Mqh3W5sR5CqJAWYJFQePVaUs5GBfnonsaCdT7FbEQ",
"amount": "5000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/sanctions/screen",
"description": "Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 600
},
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"proof": "transactionHash",
"header": "X-PAYMENT",
"decimals": 6,
"challengeId": "vOgSJTLVAUtVO5-_QtwWR8-MuBWRBnPO",
"paymentFlow": "upfront",
"instructions": "Already sent the USDC? Transfer at least 5000 units to payTo on this network, then retry with '0x<64-hex transaction hash>' as your PAYMENT-SIGNATURE (x402 v2) or X-PAYMENT (v1) header AND the X-Payment-Challenge header from the payment-required response you were quoted this resource with (extra.challengeId there). The receipt is read on chain; the transfer must be within the last 150 blocks, each hash pays once, and only the caller that received that challenge can redeem it. Optionally also send X-Payment-Challenge-Signature: the sending wallet's signature over the challenge message (layout on the x402 protocol page). It is optional today and will become required; signing makes your hash unredeemable by anyone else. A redemption sent right after mining can be refused with errorCode settlement_not_yet_visible while our node catches up; the hash is not consumed, so wait for Retry-After and send the same request again.",
"challengeHeader": "X-Payment-Challenge",
"challengeSignatureHeader": "X-Payment-Challenge-Signature"
},
"payTo": "0x6454a645C92B8722EC9A07FCe12A582A877B8843",
"amount": "5000",
"scheme": "settled-transfer",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://api.limitguard.ai/v1/sanctions/screen",
"description": "Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.",
"maxAmountRequired": "5000",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.limitguard.ai/v1/sanctions/screen",
"tags": [
"kyb",
"sanctions",
"lead-verification",
"wallet-screening",
"compliance"
],
"iconUrl": "https://limitguard.ai/icon-512.png",
"mimeType": "application/json",
"description": "Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.",
"serviceName": "Limitguard"
},
"errorCode": "payment_required",
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"name": "Acme B.V."
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"matches": [
{
"list": "OFAC SDN",
"entry_id": "12345",
"list_key": "ofac_sdn",
"countries": [
"AE"
],
"listed_on": "2024-05-01",
"entry_type": "entity",
"match_type": "name_exact",
"programmes": [
"SDGT"
],
"match_score": 1,
"matched_name": "EXAMPLE TRADING LLC"
}
],
"list_note": "EU list: the EU's own published file, dated 2026-09-30. Listings the EU adopted after that date may not be in it yet.",
"disclaimer": "A name match is not a determination: confirm identity with the listed identifiers before acting.",
"list_dates": {
"EU": "2026-09-30",
"UN": "2026-09-29",
"OFAC SDN": "2026-09-30"
},
"screened_at": "2026-10-01T10:00:00+00:00",
"lists_checked": [
"OFAC SDN",
"EU",
"UN"
],
"possible_match": true,
"matches_truncated": false
}
},
"sandbox": {
"url": "https://api.limitguard.ai/v1/keys/create",
"curl": "curl -s -X POST https://api.limitguard.ai/v1/keys/create -H 'Content-Type: application/json' -d '{\"email\": \"[email protected]\", \"tier\": \"sandbox\"}'",
"note": "Free sandbox key, no wallet. POST here with tier=sandbox to get an lg_sandbox_ key; send it as X-API-Key for free mock data on the entity, risk, KYB, reputation and sanctions routes (10 req/min). Or sign up for 5 free lead checks (once per verified company, used within 30 days; a full report is paid): https://dashboard.limitguard.ai/sign-up?utm_source=api&utm_medium=agent&utm_campaign=signup&utm_content=x402_hint. Or screen a name against the OFAC, EU and UN sanctions lists free first: POST https://api.limitguard.ai/v1/sanctions/preview, or a wallet address against the OFAC SDN list: POST https://api.limitguard.ai/v1/sanctions/wallet."
},
"recovery": {
"url": "https://api.limitguard.ai/v1/quickstart",
"curl": "curl -s https://api.limitguard.ai/v1/quickstart"
},
"description": "Sanctions screen of a company or person name against the OFAC SDN, EU and UN sanctions lists, held locally and refreshed daily. Returns each matched entry: list, entry id, matched name, programmes, countries, listing date and match score. Exact normalised or word-order-insensitive name match only; a name match is not a determination.",
"documentation_url": "https://docs.limitguard.ai/x402-protocol?utm_source=api&utm_medium=agent&utm_campaign=docs&utm_content=x402_protocol"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"note": {
"type": "string"
},
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"required": [
"name"
],
"properties": {
"name": {
"type": "string",
"description": "Company or person name to screen"
},
"country": {
"type": "string",
"description": "ISO 3166-1 alpha-2 country code (optional; orders matches, never excludes one)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
}
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"queryParams": {
"type": "object"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
},
"sandbox": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"note": {
"type": "string"
}
}
},
"recovery": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
}
}
},
"prepaidBalance": {
"type": "object",
"required": [
"balance_usd",
"price_usd"
],
"properties": {
"note": {
"type": "string"
},
"topup": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string"
},
"curl": {
"type": "string"
},
"minimum_usd": {
"type": "integer"
}
}
},
"reason": {
"type": "string"
},
"price_usd": {
"type": "number"
},
"balance_usd": {
"type": [
"number",
"null"
]
}
}
},
"documentation_url": {
"type": "string"
},
"cachedTierAvailable": {
"type": "boolean"
}
}
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
88/100 Solid
#13 of 129 in Verification. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 100% uptime since 10-14
- Compliance
- A 14/14 checks pass
- Price
- $0.005 to $0.90 p26 in Verification
- Risk
- clean no risk flag
- Traction
- $0.00 30d 0 buyers
14/14 compliance checks
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
402 terms unchanged since 2026-10-14. Last up 2026-10-14.
── Site signals
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
How the score works
What the score read on this service: status online, 100% uptime, latest daily rollup (no 30d window yet), 245ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.
The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.
Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.
It is a score inside Verification, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 129 listings, this one among them: the same 129 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.
Traction is a conservative undercount.
All measured facts
What it does
Limitguard checks Dutch and Belgian companies, sales leads, sanctions and wallets for AI agents, paid per call in USDC on Base or Solana. Every data call costs between $0.11 and $1.85. Per endpoint: lead verify $0.27 (KVK/KBO register, VIES VAT, mail server, sanctions, 0-100 lead score), entity check $1.05, KYB check $1.50, deep check $0.88 (PEP and insolvency; enhanced tier with adverse media $1.71), entity report $1.85, risk score $0.90, reputation score $0.90, sanctions screen $0.11 (OFAC, EU, UN), agent wallet check $0.75, wallet balance $0.11, compliance alerts $0.11. With the X-Response-Quality: cached header a recent stored answer costs less: entity check $0.11, KYB check $0.25, risk score and reputation score $0.11 each. Current prices are always in https://api.limitguard.ai/.well-known/x402.json.
Limitguard is a listed x402 Verification API. Captured payment terms name Base, Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.
Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.
Page rendered at . This response time is separate from the observation and computation times attached to each measurement.
Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.
Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.
Observed daily coverage: 2026-09-15 to 2026-10-14 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.
Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.
x402 List home · Services · Verification
- uptime · latest daily rollup
- -
- uptime 7d
- -
- uptime 30d
- -
- uptime 90d
- -
- response p95
- 245ms
- avg response
- 245ms
- total checks
- 1
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.005
- price (max)
- $0.90
- category percentile (min)
- p26 in Verification
- category percentile (max)
- p80 in Verification
- endpoints / prices
- 11 / 8
- model
- tiered
- stability
- 56%
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 390d
- registrar
- Porkbun LLC
- hosting
- custom
- domain created
- 2025-09-18
Identity facts, not a risk score.
- assessment volume 30d
- $0.00
- exact assessment volume 30d (USD)
- 0
- assessment recorded at (UTC)
- 2026-10-14T10:03:08.298Z
- buyers 30d
- 0
- settlements 30d
- 0
- measured since
- --- (start of our harvest window)
- last settlement
- ---
- top buyer share
- -
- top 3 buyers share
- -
- concentrated volume
- no
- trend 7d vs 30d
- -
- networks
- eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
- volume all-time
- $0
- settlements all-time
- 0
- median settlement 30d
- -
- max settlement 30d
- -
Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.
- member since
- 2026-10-14
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 247ms | 11 | |
| Online | 402 | 308ms | 11 | |
| Online | 402 | 196ms | 11 | |
| Online | 402 | 267ms | 11 | |
| Online | 402 | 252ms | 11 | |
| Online | 402 | 217ms | 11 | |
| Online | 402 | 245ms | 11 |
Changes0 in 30d
No changes recorded in the last 30 days.
Over time
On-chain volume daily snapshots, USD 30d: $0.00, peak $10.93 on 10-11
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime no completed-day data
- Volume 30d
- $0.00
- Uptime
- no completed-day data
More charts
Response time daily average, ms min 245ms, avg 245ms, max 245ms
09-15 to 10-14* UTC
Each series spans only the dates it has data for. Every series is also served as JSON at /api, /scores, /volume and /buyers.
Values
* today so far, partial (UTC).
The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.
Daily snapshot total, 30d: $13.31, peak $10.93 on 10-11. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.
Daily address snapshots: 2026-09-15 to 2026-10-14 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.
Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.
Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.
| Day | Volume | Buyers | Settlements | Uptime | Response | Compliance | Price percentile | Site signals |
|---|---|---|---|---|---|---|---|---|
| 2026-09-24 | $0.10 | 1 | 1 | no data | no data | no data | no data | no data |
| 2026-09-25 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-26 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-27 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-28 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-29 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-09-30 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-01 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-02 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-03 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-04 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-05 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-06 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-07 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-08 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-09 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-10 | $0.11 | 1 | 1 | no data | no data | no data | no data | no data |
| 2026-10-11 | $10.93 | 1 | 18 | no data | no data | no data | no data | no data |
| 2026-10-12 | no data | no data | no data | no data | no data | no data | no data | no data |
| 2026-10-13 | $0.11 | 1 | 1 | no data | no data | no data | no data | no data |
| 2026-10-14* | $2.06 | 2 | 15 | 100% | 245.25ms | 14/14 | p26 | 4/6 |
Alternatives in Verification
5 of 128 other ranked services in Verification, ordered by the same measured score.
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Markdown
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HTML, live uptime variant
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