x402 Toolbox
payment-ready until 2026-11-12
A toolbox of x402 payment-protocol mechanics: 25 small real endpoints on Base mainnet USDC, each demonstrating a distinct pattern -- oracle attestation, escrow, auction, prediction market, deferred invoicing, subscription reminders, insured data feeds, and more.
Call it x402 v2
x402 v2
- Base URL
- https://lab.paidapis.net
- Payment
- x402 v2, header channel
$ curl -i 'https://lab.paidapis.net/api/attestation-log' An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.
Endpoints 28 paid routes on lab.paidapis.net
POST/api/alerts/subscribe Base$0.02since 09-21
GET/api/attestation-log Base$0.02since 09-21
GET/api/batch-resize Base$0.005since 09-21
POST/api/bundle/subscribe Base$0.03since 09-21
POST/api/contract-risk/summarize Base$0.01since 10-14
POST/api/document-anchor/create Base$0.02since 10-14
GET/api/enrich-address Base$0.01since 09-21
POST/api/escrow/create Base$0.02since 09-21
20 more in Example 402 response
Prices as captured in the 402 response: median $0.01 across the 28 endpoints.
Example 402 response
Endpoints and prices
| Method | Path | Description | Price | Network | Asset | 402 channel | Captured |
|---|---|---|---|---|---|---|---|
| POST | / | Alerting: register a one-shot webhook that fires when Ethereum gas price crosses your threshold · the server pushes to you when it happens, instead of you polling for it. | $0.02 | Base | USDC | header | since 09-21 |
| GET | / | Audit trail: a verifiable, timestamped log of past oracle attestations (?limit=, default 20). Each entry carries its own signature from the verify-tx endpoint; the returned page is also freshly signed as a whole. | $0.02 | Base | USDC | header | since 09-21 |
| GET | / | Batch task-runner: run up to 5 image-resize jobs in one paid call (?jobs=<JSON array of {url,width,height}>). Priced as the sum of each job's real output-megapixel cost · one payment covers N heterogeneous units of work instead of paying per call for each. | $0.005 | Base | USDC | header | since 09-21 |
| POST | / | Bundle/all-access pass: one payment unlocks 2 minutes of free access to /api/bundle/market-snapshot, /api/bundle/normalized-gas, and /api/bundle/gas-metrics · instead of paying each separately (?subscriberAddress= required). New mechanic: an access-control check gates every bundled route before it runs. | $0.03 | Base | USDC | header | since 09-21 |
| POST | / | Plain-English smart-contract risk summarizer: submit Solidity source code (max 50000 chars) and get back a structured risk assessment (risk level, specific findings, plain-English summary) · callable by a dev tool or an agent doing due diligence, not just a human reading a dashboard. Priced at $0.001/KB (min $0.01). | $0.01 | Base | USDC | header | since 10-14 |
| POST | / | Blockchain-anchored proof-of-existence: submit a 32-byte document hash (never the document itself) and it's written directly into a real Base transaction's calldata. Unlike every other attestation in this Toolbox, this needs no trust in our oracle key at all · anyone can independently verify it on-chain via the free verify endpoint. | $0.02 | Base | USDC | header | since 10-14 |
| GET | / | Enrichment: attaches real on-chain context to a bare address (contract vs EOA, native balance, transaction count, new-vs-active classification) · checkable facts only, no unverifiable labels. | $0.01 | Base | USDC | header | since 09-21 |
| POST | / | Escrow-lite: payment settles immediately, like every other endpoint here · but the purchased resource is withheld until our oracle confirms your named release condition (a given tx hash confirming on-chain). Soft escrow: delayed delivery, not real fund custody. | $0.02 | Base | USDC | header | since 09-21 |
| GET | / | Freshness-tiered pricing: gas price + ETH/USD price, same data either way. ?freshness=cached ($0.002) serves the last known values with no network call; ?freshness=live ($0.02) forces a guaranteed-current fetch right now. | $0.002 | Base | USDC | header | since 09-21 |
| GET | / | Cross-chain gas comparator: real, current gas price on Ethereum and Base side by side, with the delta and ratio between them, plus the estimated USD cost of a standard 21,000-gas transfer on each chain (using the live ETH/USD price). No advice or 'cheaper chain' verdict · just the numbers. | $0.01 | Base | USDC | header | since 09-21 |
| GET | / | Historical data export: raw Ethereum gas price samples over a date range (?from=, ?to=, ISO 8601, max 24h; ?format=json|csv). Priced at $0.0005/sample (min $0.005) · the real row count for your range, not a flat fee. | $0.005 | Base | USDC | header | since 09-21 |
| GET | / | Derived metrics: Ethereum gas price sampled continuously in the background and turned into rolling average, min/max, volatility, and trend direction over a window (?windowMinutes=, default 10) · none of which exist in the raw upstream feed's single instantaneous value. | $0.01 | Base | USDC | header | since 09-21 |
| POST | / | Insured data feed: pay a premium for an ETH/USD price snapshot (?premiumUsdc=, ?maxDeviationPct=, ?checkDelaySeconds=). If the real price has drifted more than your insured tolerance by the checkpoint, claim a 2x refund · a real payout for genuinely stale data, not a fabricated failure. | $0.01 | Base | USDC | header | since 09-21 |
| POST | / | Machine-to-machine invoicing: issue a signed invoice now (payerAddress, amountUsdc, optional lineItems/memo/dueBy); the payer settles it later at its own dynamically-priced /pay sub-resource, instead of paying synchronously like every other endpoint here. | $0.001 | Base | USDC | header | since 09-21 |
| GET | / | Filtering: USDC on Base settles thousands of transfers a minute. This scans the raw feed and returns only transfers above a value threshold (?minUsd=, default $10,000) · the noise removed, not delivered. | $0.02 | Base | USDC | header | since 09-21 |
| POST | / | Leaderboard: pay a tiny fee to appear on a ranked scoreboard (?name=, ?url=, ?note=). No underlying data product · pure visibility. Ranked by cumulative amount paid; paying again bumps your rank. | $0.005 | Base | USDC | header | since 09-21 |
| GET | / | Aggregated market snapshot: Ethereum mainnet gas price (Gwei), ETH/USD spot price, and the latest Base mainnet block number and timestamp · combined into one call. Optional ?ref=<address> pays that wallet a 20% referral cut, sent as a separate on-chain transfer after settlement. | $0.01 | Base | USDC | header | since 09-21 |
| GET | / | Normalization: Ethereum and Base both return gas price and block data as raw hex (wei, Unix seconds) with no shared shape. This cleans both into one consistent schema per chain · decimal Gwei, ISO 8601 timestamps. | $0.01 | Base | USDC | header | since 09-21 |
| POST | / | Wallet-ownership proof: submit the signature for a previously issued challenge (see the free /api/ownership/challenge step) and get back an oracle-signed attestation that this address signed this exact message at this time. EOA wallets only. | $0.02 | Base | USDC | header | since 10-14 |
| GET | / | Reliability: ETH/USD price with retry-with-backoff and last-known-good cache fallback layered on top · sells dependability, not the raw data itself. Optional ?simulateFailureRate=0-1 for demoing the fallback path. | $0.01 | Base | USDC | header | since 09-21 |
| GET | / | Reputation layer: a trust score (?address=) computed from two real sources · live on-chain activity (via enrichment) and our own ledger of settled payments this address has actually made to us. No third-party data, fully documented breakdown, not a black box. | $0.01 | Base | USDC | header | since 09-21 |
| GET | / | Task-runner: resize an image (?url=, ?width=, ?height=, max 2000px each) and return it as a data URL. Priced at $0.02/output-megapixel (min $0.005) · sells compute, metered by resource use, not a flat fee. | $0.005 | Base | USDC | header | since 09-21 |
| POST | / | Register a subscription (yours or one you manage for another agent) for renewal-reminder tracking. Bookkeeping only · no auto-renewal, no custody, this server never pays on your behalf. Fires a webhook once per cycle when the reminder window opens. | $0.01 | Base | USDC | header | since 09-21 |
| GET | / | FIFO tax-lot calculator: fetches on-chain transfer history for one or more wallets (?addresses=0x..,0x.. comma-separated) on Ethereum mainnet, prices each disposal/acquisition in USD at its own historical date, and returns matched cost-basis lots with realized gain/loss and short/long-term classification. Priced at $0.05/wallet requested. | $0.05 | Base | USDC | header | since 10-14 |
| GET | / | Oracle: checks whether a base transaction hash has confirmed on-chain, and returns a signed (EIP-191) yes/no attestation · verifiable independently against 0x5a6d60f11C0E33f97E2De12b8B2b70d1B1FE9Efc, without trusting us again on a later call. | $0.02 | Base | USDC | header | since 09-21 |
| GET | / | Multi-source oracle: checks a Base tx hash against 3 independent RPC providers in parallel and only signs an attestation if all of them unanimously agree. If they disagree, the raw per-source breakdown is returned instead of a false attestation · stronger trust than the single-source oracle, priced accordingly. | $0.05 | Base | USDC | header | since 09-21 |
| POST | / | Wallet-activity webhook: register a Base address (?address=) and a webhook (?webhookUrl=) · the server watches for any native ETH or ERC-20 transfer touching that address and pushes a webhook per match for 30 days, instead of you polling for it. Unlike the gas-price alert, this can fire repeatedly. | $0.02 | Base | USDC | header | since 10-14 |
| GET | / | Format conversion: Wikipedia's own REST API serves full rendered HTML, not JSON. This fetches an article's lead section (?title=) and returns clean, tag-free paragraph text as JSON. | $0.01 | Base | USDC | header | since 09-21 |
Payment evidence
402 payload captured at . Check evidence JSON · Measurement methodology.
First of 28 payloads captured by the monitor.
126 lines, scroll inside
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/enrich-address",
"mimeType": "application/json",
"description": "Enrichment: attaches real on-chain context to a bare address (contract vs EOA, native balance, transaction count, new-vs-active classification) — checkable facts only, no unverifiable labels."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": ""
}
},
"output": {
"type": "json",
"example": {
"address": "",
"isContract": false,
"classification": "contract",
"nativeBalanceEth": 0,
"transactionCount": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Address to look up."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"address": {
"type": "string"
},
"isContract": {
"type": "boolean"
},
"classification": {
"enum": [
"contract",
"new-wallet",
"active-wallet"
],
"type": "string"
},
"nativeBalanceEth": {
"type": "number"
},
"transactionCount": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
} Other captured 402 responses (27)
Captured payload 2 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/attestation-log",
"mimeType": "application/json",
"description": "Audit trail: a verifiable, timestamped log of past oracle attestations (?limit=, default 20). Each entry carries its own signature from the verify-tx endpoint; the returned page is also freshly signed as a whole."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"limit": 0
}
},
"output": {
"type": "json",
"example": {
"count": 0,
"generatedAt": "",
"attestations": [],
"pageSignature": "",
"signerAddress": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"limit": {
"type": "integer",
"description": "Max entries to return, 1-100 (default 20)."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"count": {
"type": "integer"
},
"generatedAt": {
"type": "string"
},
"attestations": {
"type": "array",
"items": {
"type": "object"
}
},
"pageSignature": {
"type": "string"
},
"signerAddress": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 3 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/insured-feed/subscribe",
"mimeType": "application/json",
"description": "Insured data feed: pay a premium for an ETH/USD price snapshot (?premiumUsdc=, ?maxDeviationPct=, ?checkDelaySeconds=). If the real price has drifted more than your insured tolerance by the checkpoint, claim a 2x refund — a real payout for genuinely stale data, not a fabricated failure."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST",
"queryParams": {
"premiumUsdc": 0,
"maxDeviationPct": 0,
"checkDelaySeconds": 0,
"subscriberAddress": ""
}
},
"output": {
"type": "json",
"example": {
"status": "pending-check",
"checkAt": "",
"premiumUsdc": 0,
"subscribedAt": "",
"subscriptionId": "",
"maxDeviationPct": 0,
"subscriberAddress": "",
"actualDeviationPct": 0,
"snapshotEthUsdPrice": 0,
"liveEthUsdPriceAtCheck": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"subscriberAddress",
"premiumUsdc"
],
"properties": {
"premiumUsdc": {
"type": "number",
"description": "Premium to pay, up to 5."
},
"maxDeviationPct": {
"type": "number",
"description": "Insured tolerance in percent (default 1)."
},
"checkDelaySeconds": {
"type": "integer",
"description": "Seconds until the checkpoint, up to 3600 (default 30)."
},
"subscriberAddress": {
"type": "string",
"description": "Wallet address eligible for the insurance payout."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"enum": [
"pending-check",
"held",
"claim-eligible",
"refunded"
],
"type": "string"
},
"checkAt": {
"type": "string"
},
"premiumUsdc": {
"type": "number"
},
"subscribedAt": {
"type": "string"
},
"subscriptionId": {
"type": "string"
},
"maxDeviationPct": {
"type": "number"
},
"subscriberAddress": {
"type": "string"
},
"actualDeviationPct": {
"type": [
"number",
"null"
]
},
"snapshotEthUsdPrice": {
"type": "number"
},
"liveEthUsdPriceAtCheck": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 4 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/tax-lot-calculator",
"mimeType": "application/json",
"description": "FIFO tax-lot calculator: fetches on-chain transfer history for one or more wallets (?addresses=0x..,0x.. comma-separated) on Ethereum mainnet, prices each disposal/acquisition in USD at its own historical date, and returns matched cost-basis lots with realized gain/loss and short/long-term classification. Priced at $0.05/wallet requested."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"addresses": ""
}
},
"output": {
"type": "json",
"example": {
"lots": [],
"method": "",
"openLots": [],
"unpriced": [],
"addresses": [],
"computedAt": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"addresses"
],
"properties": {
"addresses": {
"type": "string",
"description": "Comma-separated wallet addresses (max 20), treated as one taxpayer — transfers between them are internal, not taxable."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"lots": {
"type": "array",
"items": {
"type": "object"
}
},
"method": {
"type": "string"
},
"openLots": {
"type": "array",
"items": {
"type": "object"
}
},
"unpriced": {
"type": "array",
"items": {
"type": "object"
}
},
"addresses": {
"type": "array",
"items": {
"type": "string"
}
},
"computedAt": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 5 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/wallet-watch/subscribe",
"mimeType": "application/json",
"description": "Wallet-activity webhook: register a Base address (?address=) and a webhook (?webhookUrl=) — the server watches for any native ETH or ERC-20 transfer touching that address and pushes a webhook per match for 30 days, instead of you polling for it. Unlike the gas-price alert, this can fire repeatedly."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"address": "",
"webhookUrl": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"status": "active",
"address": "",
"createdAt": "",
"expiresAt": "",
"firedCount": 0,
"webhookUrl": "",
"lastFiredAt": "",
"subscriptionId": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"address",
"webhookUrl"
],
"properties": {
"address": {
"type": "string",
"description": "Base wallet address to watch."
},
"webhookUrl": {
"type": "string",
"description": "Public http(s) URL to POST to on each match."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"enum": [
"active",
"expired"
],
"type": "string"
},
"address": {
"type": "string"
},
"createdAt": {
"type": "string"
},
"expiresAt": {
"type": "string"
},
"firedCount": {
"type": "integer"
},
"webhookUrl": {
"type": "string"
},
"lastFiredAt": {
"type": [
"string",
"null"
]
},
"subscriptionId": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 6 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/ownership/verify",
"mimeType": "application/json",
"description": "Wallet-ownership proof: submit the signature for a previously issued challenge (see the free /api/ownership/challenge step) and get back an oracle-signed attestation that this address signed this exact message at this time. EOA wallets only."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"signature": "",
"challengeId": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"address": "",
"message": "",
"signature": "",
"verifiedAt": "",
"challengeId": "",
"oracleSignature": "",
"oracleSignerAddress": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"challengeId",
"signature"
],
"properties": {
"signature": {
"type": "string",
"description": "The signature produced by signing the challenge's message."
},
"challengeId": {
"type": "string",
"description": "The challengeId from the free challenge step."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"address": {
"type": "string"
},
"message": {
"type": "string"
},
"signature": {
"type": "string"
},
"verifiedAt": {
"type": "string"
},
"challengeId": {
"type": "string"
},
"oracleSignature": {
"type": "string"
},
"oracleSignerAddress": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 7 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/document-anchor/create",
"mimeType": "application/json",
"description": "Blockchain-anchored proof-of-existence: submit a 32-byte document hash (never the document itself) and it's written directly into a real Base transaction's calldata. Unlike every other attestation in this Toolbox, this needs no trust in our oracle key at all — anyone can independently verify it on-chain via the free verify endpoint."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"hash": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"hash": "",
"chain": "base",
"txHash": "",
"anchoredAt": "",
"blockNumber": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"hash"
],
"properties": {
"hash": {
"type": "string",
"description": "32-byte hex hash of the document (0x + 64 hex chars)."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"hash": {
"type": "string"
},
"chain": {
"enum": [
"base"
],
"type": "string"
},
"txHash": {
"type": "string"
},
"anchoredAt": {
"type": "string"
},
"blockNumber": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 8 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/contract-risk/summarize",
"mimeType": "application/json",
"description": "Plain-English smart-contract risk summarizer: submit Solidity source code (max 50000 chars) and get back a structured risk assessment (risk level, specific findings, plain-English summary) — callable by a dev tool or an agent doing due diligence, not just a human reading a dashboard. Priced at $0.001/KB (min $0.01)."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"sourceCode": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"summary": "",
"findings": [],
"riskLevel": "low",
"analyzedAt": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"sourceCode"
],
"properties": {
"sourceCode": {
"type": "string",
"description": "Solidity (or similar) source code, max 50000 characters."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"summary": {
"type": "string"
},
"findings": {
"type": "array",
"items": {
"type": "object",
"properties": {
"title": {
"type": "string"
},
"severity": {
"enum": [
"low",
"medium",
"high",
"critical"
],
"type": "string"
},
"explanation": {
"type": "string"
}
}
}
},
"riskLevel": {
"enum": [
"low",
"medium",
"high",
"critical"
],
"type": "string"
},
"analyzedAt": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 9 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/batch-resize",
"mimeType": "application/json",
"description": "Batch task-runner: run up to 5 image-resize jobs in one paid call (?jobs=<JSON array of {url,width,height}>). Priced as the sum of each job's real output-megapixel cost — one payment covers N heterogeneous units of work instead of paying per call for each."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"jobs": ""
}
},
"output": {
"type": "json",
"example": {
"results": [],
"totalJobs": 0,
"failedCount": 0,
"processedAt": "",
"succeededCount": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"jobs"
],
"properties": {
"jobs": {
"type": "string",
"description": "JSON array (max 5) of {\"url\",\"width\",\"height\"} objects."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"results": {
"type": "array",
"items": {
"type": "object"
}
},
"totalJobs": {
"type": "integer"
},
"failedCount": {
"type": "integer"
},
"processedAt": {
"type": "string"
},
"succeededCount": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 10 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/escrow/create",
"mimeType": "application/json",
"description": "Escrow-lite: payment settles immediately, like every other endpoint here — but the purchased resource is withheld until our oracle confirms your named release condition (a given tx hash confirming on-chain). Soft escrow: delayed delivery, not real fund custody."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"txHash": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"status": "",
"escrowId": "",
"createdAt": "",
"releaseCondition": {}
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"txHash"
],
"properties": {
"txHash": {
"type": "string",
"description": "32-byte transaction hash that must confirm to release the resource."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"type": "string"
},
"escrowId": {
"type": "string"
},
"createdAt": {
"type": "string"
},
"releaseCondition": {
"type": "object"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 11 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/market-snapshot",
"mimeType": "application/json",
"description": "Aggregated market snapshot: Ethereum mainnet gas price (Gwei), ETH/USD spot price, and the latest Base mainnet block number and timestamp — combined into one call. Optional ?ref=<address> pays that wallet a 20% referral cut, sent as a separate on-chain transfer after settlement."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"ref": ""
}
},
"output": {
"type": "json",
"example": {
"dataAsOf": "",
"ethUsdPrice": 0,
"gasPriceGwei": 0,
"latestBaseBlock": {
"number": 0,
"timestamp": ""
}
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"ref": {
"type": "string",
"description": "Wallet address to pay a referral cut to."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"dataAsOf": {
"type": "string"
},
"ethUsdPrice": {
"type": "number"
},
"gasPriceGwei": {
"type": "number"
},
"latestBaseBlock": {
"type": "object",
"properties": {
"number": {
"type": "integer"
},
"timestamp": {
"type": "string"
}
}
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 12 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/subscriptions/register",
"mimeType": "application/json",
"description": "Register a subscription (yours or one you manage for another agent) for renewal-reminder tracking. Bookkeeping only — no auto-renewal, no custody, this server never pays on your behalf. Fires a webhook once per cycle when the reminder window opens."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"amountUsdc": 0,
"serviceUrl": "",
"webhookUrl": "",
"serviceName": "",
"ownerAddress": "",
"nextRenewalAt": "",
"renewsEverySeconds": 0,
"reminderLeadSeconds": 0
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"status": "active",
"amountUsdc": 0,
"serviceUrl": "",
"webhookUrl": "",
"serviceName": "",
"ownerAddress": "",
"nextRenewalAt": "",
"subscriptionId": "",
"renewsEverySeconds": 0,
"reminderLeadSeconds": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"ownerAddress",
"serviceName",
"serviceUrl",
"amountUsdc",
"renewsEverySeconds"
],
"properties": {
"amountUsdc": {
"type": "number",
"description": "Renewal amount, in USDC."
},
"serviceUrl": {
"type": "string",
"description": "URL of the subscribed service."
},
"webhookUrl": {
"type": "string",
"description": "Public http(s) URL to POST a reminder to before renewal is due."
},
"serviceName": {
"type": "string",
"description": "Display name of the subscribed service (max 80 chars)."
},
"ownerAddress": {
"type": "string",
"description": "Wallet address this subscription belongs to."
},
"nextRenewalAt": {
"type": "string",
"description": "ISO 8601 date of the next renewal (default: now + renewsEverySeconds)."
},
"renewsEverySeconds": {
"type": "integer",
"description": "Renewal period length, in seconds."
},
"reminderLeadSeconds": {
"type": "integer",
"description": "Seconds before nextRenewalAt to fire the reminder, up to 2592000 (default 60)."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"enum": [
"active",
"cancelled"
],
"type": "string"
},
"amountUsdc": {
"type": "number"
},
"serviceUrl": {
"type": "string"
},
"webhookUrl": {
"type": [
"string",
"null"
]
},
"serviceName": {
"type": "string"
},
"ownerAddress": {
"type": "string"
},
"nextRenewalAt": {
"type": "string"
},
"subscriptionId": {
"type": "string"
},
"renewsEverySeconds": {
"type": "integer"
},
"reminderLeadSeconds": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 13 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/gas-history-export",
"mimeType": "application/json",
"description": "Historical data export: raw Ethereum gas price samples over a date range (?from=, ?to=, ISO 8601, max 24h; ?format=json|csv). Priced at $0.0005/sample (min $0.005) — the real row count for your range, not a flat fee."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"to": "",
"from": "",
"format": "json"
}
},
"output": {
"type": "json",
"example": {
"to": "",
"from": "",
"samples": [],
"sampleCount": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"from",
"to"
],
"properties": {
"to": {
"type": "string",
"description": "ISO 8601 range end."
},
"from": {
"type": "string",
"description": "ISO 8601 range start."
},
"format": {
"enum": [
"json",
"csv"
],
"type": "string",
"description": "Either \"json\" (default) or \"csv\"."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"samples": {
"type": "array",
"items": {
"type": "object",
"properties": {
"timestamp": {
"type": "string"
},
"gasPriceGwei": {
"type": "number"
}
}
}
},
"sampleCount": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 14 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/verify-tx",
"mimeType": "application/json",
"description": "Oracle: checks whether a base transaction hash has confirmed on-chain, and returns a signed (EIP-191) yes/no attestation — verifiable independently against 0x5a6d60f11C0E33f97E2De12b8B2b70d1B1FE9Efc, without trusting us again on a later call."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"txHash": ""
}
},
"output": {
"type": "json",
"example": {
"chain": "",
"txHash": "",
"checkedAt": "",
"confirmed": false,
"signature": "",
"blockNumber": 0,
"signerAddress": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"txHash"
],
"properties": {
"txHash": {
"type": "string",
"description": "32-byte transaction hash to check."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"chain": {
"type": "string"
},
"txHash": {
"type": "string"
},
"checkedAt": {
"type": "string"
},
"confirmed": {
"type": "boolean"
},
"signature": {
"type": "string"
},
"blockNumber": {
"type": [
"integer",
"null"
]
},
"signerAddress": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 15 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/normalized-gas",
"mimeType": "application/json",
"description": "Normalization: Ethereum and Base both return gas price and block data as raw hex (wei, Unix seconds) with no shared shape. This cleans both into one consistent schema per chain — decimal Gwei, ISO 8601 timestamps."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"dataAsOf": "",
"snapshots": []
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"dataAsOf": {
"type": "string"
},
"snapshots": {
"type": "array",
"items": {
"type": "object",
"properties": {
"chain": {
"type": "string"
},
"blockNumber": {
"type": "integer"
},
"gasPriceGwei": {
"type": "number"
},
"blockTimestamp": {
"type": "string"
}
}
}
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 16 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/leaderboard/list",
"mimeType": "application/json",
"description": "Leaderboard: pay a tiny fee to appear on a ranked scoreboard (?name=, ?url=, ?note=). No underlying data product — pure visibility. Ranked by cumulative amount paid; paying again bumps your rank."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST",
"queryParams": {
"url": "",
"name": "",
"note": ""
}
},
"output": {
"type": "json",
"example": {
"status": "",
"message": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"name"
],
"properties": {
"url": {
"type": "string",
"description": "Optional URL to associate with the listing."
},
"name": {
"type": "string",
"description": "Display name to list (max 80 chars)."
},
"note": {
"type": "string",
"description": "Optional short note."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"type": "string"
},
"message": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 17 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/freshness-priced-data",
"mimeType": "application/json",
"description": "Freshness-tiered pricing: gas price + ETH/USD price, same data either way. ?freshness=cached ($0.002) serves the last known values with no network call; ?freshness=live ($0.02) forces a guaranteed-current fetch right now."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"freshness": "cached"
}
},
"output": {
"type": "json",
"example": {
"servedAt": "",
"freshness": "cached",
"ethUsdPrice": 0,
"gasPriceGwei": 0,
"gasSampleCount": 0,
"ethPriceCachedAt": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"freshness": {
"enum": [
"cached",
"live"
],
"type": "string",
"description": "Either \"cached\" (default) or \"live\"."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"servedAt": {
"type": "string"
},
"freshness": {
"enum": [
"cached",
"live"
],
"type": "string"
},
"ethUsdPrice": {
"type": [
"number",
"null"
]
},
"gasPriceGwei": {
"type": [
"number",
"null"
]
},
"gasSampleCount": {
"type": "integer"
},
"ethPriceCachedAt": {
"type": [
"string",
"null"
]
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 18 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/alerts/subscribe",
"mimeType": "application/json",
"description": "Alerting: register a one-shot webhook that fires when Ethereum gas price crosses your threshold — the server pushes to you when it happens, instead of you polling for it."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"condition": "above",
"webhookUrl": "",
"thresholdGwei": 0
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"status": "active",
"alertId": "",
"firedAt": "",
"condition": "above",
"createdAt": "",
"webhookUrl": "",
"thresholdGwei": 0,
"gasPriceGweiAtTrigger": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"webhookUrl",
"condition",
"thresholdGwei"
],
"properties": {
"condition": {
"enum": [
"above",
"below"
],
"type": "string",
"description": "Either \"above\" or \"below\"."
},
"webhookUrl": {
"type": "string",
"description": "Public http(s) URL to POST to when the alert fires."
},
"thresholdGwei": {
"type": "number",
"description": "Gas price threshold in Gwei."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"status": {
"enum": [
"active",
"fired",
"delivery-failed"
],
"type": "string"
},
"alertId": {
"type": "string"
},
"firedAt": {
"type": [
"string",
"null"
]
},
"condition": {
"enum": [
"above",
"below"
],
"type": "string"
},
"createdAt": {
"type": "string"
},
"webhookUrl": {
"type": "string"
},
"thresholdGwei": {
"type": "number"
},
"gasPriceGweiAtTrigger": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 19 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/reputation",
"mimeType": "application/json",
"description": "Reputation layer: a trust score (?address=) computed from two real sources — live on-chain activity (via enrichment) and our own ledger of settled payments this address has actually made to us. No third-party data, fully documented breakdown, not a black box."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"address": ""
}
},
"output": {
"type": "json",
"example": {
"address": "",
"signals": {},
"breakdown": {},
"checkedAt": "",
"trustScore": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"address"
],
"properties": {
"address": {
"type": "string",
"description": "Address to score."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"address": {
"type": "string"
},
"signals": {
"type": "object"
},
"breakdown": {
"type": "object"
},
"checkedAt": {
"type": "string"
},
"trustScore": {
"type": "number"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 20 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "50000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/verify-tx-multi-source",
"mimeType": "application/json",
"description": "Multi-source oracle: checks a Base tx hash against 3 independent RPC providers in parallel and only signs an attestation if all of them unanimously agree. If they disagree, the raw per-source breakdown is returned instead of a false attestation — stronger trust than the single-source oracle, priced accordingly."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"txHash": ""
}
},
"output": {
"type": "json",
"example": {
"chain": "",
"signed": false,
"txHash": "",
"sources": [],
"checkedAt": "",
"confirmed": false,
"signature": "",
"blockNumber": 0,
"totalSources": 0,
"signerAddress": "",
"agreeingSources": 0,
"consensusReached": false
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"txHash"
],
"properties": {
"txHash": {
"type": "string",
"description": "32-byte transaction hash to check."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"chain": {
"type": "string"
},
"signed": {
"type": "boolean"
},
"txHash": {
"type": "string"
},
"sources": {
"type": "array",
"items": {
"type": "object"
}
},
"checkedAt": {
"type": "string"
},
"confirmed": {
"type": [
"boolean",
"null"
]
},
"signature": {
"type": "string"
},
"blockNumber": {
"type": [
"integer",
"null"
]
},
"totalSources": {
"type": "integer"
},
"signerAddress": {
"type": "string"
},
"agreeingSources": {
"type": "integer"
},
"consensusReached": {
"type": "boolean"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 21 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/gas-comparator",
"mimeType": "application/json",
"description": "Cross-chain gas comparator: real, current gas price on Ethereum and Base side by side, with the delta and ratio between them, plus the estimated USD cost of a standard 21,000-gas transfer on each chain (using the live ETH/USD price). No advice or 'cheaper chain' verdict — just the numbers."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {}
},
"output": {
"type": "json",
"example": {
"base": {},
"ratio": 0,
"ethereum": {},
"checkedAt": "",
"deltaGwei": 0,
"ethUsdPrice": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"base": {
"type": "object"
},
"ratio": {
"type": "number"
},
"ethereum": {
"type": "object"
},
"checkedAt": {
"type": "string"
},
"deltaGwei": {
"type": "number"
},
"ethUsdPrice": {
"type": "number"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 22 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/wiki-summary",
"mimeType": "application/json",
"description": "Format conversion: Wikipedia's own REST API serves full rendered HTML, not JSON. This fetches an article's lead section (?title=) and returns clean, tag-free paragraph text as JSON."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"title": ""
}
},
"output": {
"type": "json",
"example": {
"title": "",
"sourceUrl": "",
"paragraphs": [],
"convertedAt": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"title"
],
"properties": {
"title": {
"type": "string",
"description": "Wikipedia article title."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"title": {
"type": "string"
},
"sourceUrl": {
"type": "string"
},
"paragraphs": {
"type": "array",
"items": {
"type": "string"
}
},
"convertedAt": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 23 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "30000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/bundle/subscribe",
"mimeType": "application/json",
"description": "Bundle/all-access pass: one payment unlocks 2 minutes of free access to /api/bundle/market-snapshot, /api/bundle/normalized-gas, and /api/bundle/gas-metrics — instead of paying each separately (?subscriberAddress= required). New mechanic: an access-control check gates every bundled route before it runs."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "POST",
"queryParams": {
"subscriberAddress": ""
}
},
"output": {
"type": "json",
"example": {
"unlockedUntil": "",
"subscriberAddress": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"subscriberAddress"
],
"properties": {
"subscriberAddress": {
"type": "string",
"description": "Wallet address to grant bundle access to."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"unlockedUntil": {
"type": "string"
},
"subscriberAddress": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 24 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/large-usdc-transfers",
"mimeType": "application/json",
"description": "Filtering: USDC on Base settles thousands of transfers a minute. This scans the raw feed and returns only transfers above a value threshold (?minUsd=, default $10,000) — the noise removed, not delivered."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"minUsd": 0
}
},
"output": {
"type": "json",
"example": {
"minUsd": 0,
"dataAsOf": "",
"transfers": [],
"rawEventCount": 0,
"scannedBlocks": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"minUsd": {
"type": "number",
"description": "Minimum USD value to include (default 10000)."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"minUsd": {
"type": "number"
},
"dataAsOf": {
"type": "string"
},
"transfers": {
"type": "array",
"items": {
"type": "object",
"properties": {
"to": {
"type": "string"
},
"from": {
"type": "string"
},
"txHash": {
"type": "string"
},
"amountUsdc": {
"type": "number"
},
"blockNumber": {
"type": "integer"
}
}
}
},
"rawEventCount": {
"type": "integer"
},
"scannedBlocks": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 25 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/resize-image",
"mimeType": "application/json",
"description": "Task-runner: resize an image (?url=, ?width=, ?height=, max 2000px each) and return it as a data URL. Priced at $0.02/output-megapixel (min $0.005) — sells compute, metered by resource use, not a flat fee."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "",
"width": 0,
"height": 0
}
},
"output": {
"type": "json",
"example": {
"width": 0,
"format": "",
"height": 0,
"resizedAt": "",
"sizeBytes": 0,
"imageDataUrl": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [
"url",
"width",
"height"
],
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the source image."
},
"width": {
"type": "integer",
"description": "Output width in px, up to 2000."
},
"height": {
"type": "integer",
"description": "Output height in px, up to 2000."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"width": {
"type": "integer"
},
"format": {
"type": "string"
},
"height": {
"type": "integer"
},
"resizedAt": {
"type": "string"
},
"sizeBytes": {
"type": "integer"
},
"imageDataUrl": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 26 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/gas-metrics",
"mimeType": "application/json",
"description": "Derived metrics: Ethereum gas price sampled continuously in the background and turned into rolling average, min/max, volatility, and trend direction over a window (?windowMinutes=, default 10) — none of which exist in the raw upstream feed's single instantaneous value."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"windowMinutes": 0
}
},
"output": {
"type": "json",
"example": {
"max": 0,
"min": 0,
"trend": "up",
"stdDev": 0,
"average": 0,
"current": 0,
"sampleCount": 0,
"windowMinutes": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"windowMinutes": {
"type": "number",
"description": "Window size in minutes (default 10)."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"max": {
"type": [
"number",
"null"
]
},
"min": {
"type": [
"number",
"null"
]
},
"trend": {
"enum": [
"up",
"down",
"flat",
"insufficient-data"
],
"type": "string"
},
"stdDev": {
"type": [
"number",
"null"
]
},
"average": {
"type": [
"number",
"null"
]
},
"current": {
"type": [
"number",
"null"
]
},
"sampleCount": {
"type": "integer"
},
"windowMinutes": {
"type": "integer"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 27 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/invoice/create",
"mimeType": "application/json",
"description": "Machine-to-machine invoicing: issue a signed invoice now (payerAddress, amountUsdc, optional lineItems/memo/dueBy); the payer settles it later at its own dynamically-priced /pay sub-resource, instead of paying synchronously like every other endpoint here."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"memo": "",
"dueBy": "",
"lineItems": "",
"amountUsdc": 0,
"payerAddress": ""
},
"type": "http",
"method": "POST"
},
"output": {
"type": "json",
"example": {
"dueBy": "",
"payUrl": "",
"status": "pending",
"invoiceId": "",
"signature": "",
"amountUsdc": 0,
"payerAddress": "",
"signerAddress": ""
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"body": {
"type": "object",
"required": [
"payerAddress",
"amountUsdc"
],
"properties": {
"memo": {
"type": "string",
"description": "Free-text note."
},
"dueBy": {
"type": "string",
"description": "ISO 8601 due date (default 7 days out)."
},
"lineItems": {
"type": "string",
"description": "JSON array of {\"description\",\"amountUsdc\"} objects, for record-keeping."
},
"amountUsdc": {
"type": "number",
"description": "Total amount due, in USDC."
},
"payerAddress": {
"type": "string",
"description": "Wallet address expected to pay this invoice."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"dueBy": {
"type": "string"
},
"payUrl": {
"type": "string"
},
"status": {
"enum": [
"pending",
"paid"
],
"type": "string"
},
"invoiceId": {
"type": "string"
},
"signature": {
"type": "string"
},
"amountUsdc": {
"type": "number"
},
"payerAddress": {
"type": "string"
},
"signerAddress": {
"type": "string"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Captured payload 28 of 28
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xf74f2020aC3d73F2Bf5ee0F8Bf635475eA881319",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://lab.paidapis.net/api/reliable-eth-price",
"mimeType": "application/json",
"description": "Reliability: ETH/USD price with retry-with-backoff and last-known-good cache fallback layered on top — sells dependability, not the raw data itself. Optional ?simulateFailureRate=0-1 for demoing the fallback path."
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"simulateFailureRate": 0
}
},
"output": {
"type": "json",
"example": {
"source": "live",
"attempts": 0,
"ethUsdPrice": 0,
"cacheAgeSeconds": 0,
"simulateFailureRate": 0
}
}
},
"schema": {
"properties": {
"input": {
"properties": {
"queryParams": {
"type": "object",
"required": [],
"properties": {
"simulateFailureRate": {
"type": "number",
"description": "0-1, simulates upstream failures to demo the fallback path."
}
}
}
}
},
"output": {
"properties": {
"example": {
"type": "object",
"properties": {
"source": {
"enum": [
"live",
"cache-fallback"
],
"type": "string"
},
"attempts": {
"type": "integer"
},
"ethUsdPrice": {
"type": "number"
},
"cacheAgeSeconds": {
"type": [
"number",
"null"
]
},
"simulateFailureRate": {
"type": "number"
}
}
}
}
}
}
}
},
"builder-code": {
"info": {
"a": "bc_xdmnqyvi"
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"a": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "App builder code"
},
"s": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$"
},
"maxItems": 11,
"description": "Service builder codes"
},
"w": {
"type": "string",
"pattern": "^[a-z0-9_]{1,32}$",
"description": "Wallet builder code"
}
},
"additionalProperties": false
}
}
},
"x402Version": 2
}Can I trust it score from our own monitoring
score from our own monitoring
89/100 Solid
#70 of 472 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.
- Reliability
- 99.9% uptime 30d
- Compliance
- A 14/14 checks pass
- Price
- $0.001 to $0.05 p9 in Data
- Risk
- clean no risk flag
- Traction
- $0.00 30d 0 buyers
- Last change
- schema changed 22d ago 1 in 30d
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 2026-11-05.
── 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, 99.9% uptime 30d, 217ms response p95, x402 compliance 14 of 14, $0.001 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 Data, 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 472 listings, this one among them: the same 472 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
A toolbox of x402 payment-protocol mechanics: 25 small real endpoints on Base mainnet USDC, each demonstrating a distinct pattern -- oracle attestation, escrow, auction, prediction market, deferred invoicing, subscription reminders, insured data feeds, and more. No API keys, no signup.
x402 Toolbox is a listed x402 Data API. Captured payment terms name Base. 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: 2026-10-07 to 2026-11-05 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 · Data
- uptime · latest daily rollup
- 100%
- uptime 7d
- 99.8%
- uptime 30d
- 99.9%
- uptime 90d
- 99.9%
- response p95
- 217ms
- avg response
- 177ms
- total checks
- 3,582
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
- price (min)
- $0.001
- price (max)
- $0.05
- category percentile (min)
- p9 in Data
- category percentile (max)
- p58 in Data
- endpoints / prices
- 28 / 7
- model
- tiered
- stability
- 100%
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
- 56d
- registrar
- NameCheap, Inc.
- hosting
- custom
- domain created
- 2026-09-08
Identity facts, not a risk score.
- assessment volume 30d
- $0.00
- exact assessment volume 30d (USD)
- 0
- assessment recorded at (UTC)
- 2026-11-05T09:13:47.165Z
- 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
- 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
- 2026-09-21
Recent checks
| Checked at (UTC) | Status | HTTP | Response | Endpoints |
|---|---|---|---|---|
| Online | 402 | 147ms | 28 | |
| Online | 402 | 155ms | 28 | |
| Online | 402 | 108ms | 28 | |
| Online | 402 | 134ms | 28 | |
| Online | 402 | 89ms | 28 | |
| Online | 402 | 104ms | 28 | |
| Online | 402 | 135ms | 28 | |
| Online | 402 | 91ms | 28 | |
| Online | 402 | 79ms | 28 | |
| Online | 402 | 129ms | 28 | |
| Online | 402 | 128ms | 28 | |
| Online | 402 | 102ms | 28 | |
| Online | 402 | 136ms | 28 | |
| Online | 402 | 130ms | 28 | |
| Online | 402 | 122ms | 28 | |
| Online | 402 | 101ms | 28 | |
| Online | 402 | 86ms | 28 | |
| Online | 402 | 91ms | 28 |
Changes1 in 30d
| Observed at (UTC) | Change | Evidence |
|---|---|---|
| schema changed | endpoint added endpoint added endpoint added endpoint added endpoint added schema added schema added schema added schema added schema added |
Over time
On-chain volume daily snapshots, USD 30d: $0.00
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 2 of 29 completed days below 100%
uptime below 100%, to scale
- Volume 30d
- $0.00
- Uptime
- 2 of 29 completed days below 100%
More charts
Response time daily average, ms min 105ms, avg 170ms, max 273ms
10-07 to 11-05* UTC
Scores over time
x402 compliance low 14/14, high 14/14
10-07 to 11-05* UTC
Price percentile in Data own low to high; exact values below
10-07 to 11-05* UTC
Site signals present (of 6) own low to high; exact values below
10-07 to 11-05* UTC
Scores: one day per column, 10-07 to 11-05*, on the columns of Response time. Uptime held below 100% on some days in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.
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, no volume data in the last 30d. 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: 2026-10-07 to 2026-11-05 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 |
|---|---|---|---|---|---|---|---|---|
| 2026-10-07 | no data | no data | no data | 100% | 198.23ms | 14/14 | p10 | 3/6 |
| 2026-10-08 | no data | no data | no data | 100% | 273.20ms | 14/14 | p10 | 3/6 |
| 2026-10-09 | no data | no data | no data | 100% | 237.78ms | 14/14 | p10 | 3/6 |
| 2026-10-10 | no data | no data | no data | 100% | 206.02ms | 14/14 | p10 | 3/6 |
| 2026-10-11 | no data | no data | no data | 100% | 172.93ms | 14/14 | p10 | 3/6 |
| 2026-10-12 | no data | no data | no data | 100% | 134.36ms | 14/14 | p10 | 3/6 |
| 2026-10-13 | no data | no data | no data | 100% | 128.83ms | 14/14 | p10 | 3/6 |
| 2026-10-14 | no data | no data | no data | 100% | 136.51ms | 14/14 | p9 | 3/6 |
| 2026-10-15 | no data | no data | no data | 100% | 136.87ms | 14/14 | p9 | 3/6 |
| 2026-10-16 | no data | no data | no data | 100% | 151.21ms | 14/14 | p9 | 3/6 |
| 2026-10-17 | no data | no data | no data | 100% | 174.74ms | 14/14 | p9 | 3/6 |
| 2026-10-18 | no data | no data | no data | 100% | 186.03ms | 14/14 | p9 | 3/6 |
| 2026-10-19 | no data | no data | no data | 100% | 145.31ms | 14/14 | p9 | 3/6 |
| 2026-10-20 | no data | no data | no data | 100% | 167.78ms | 14/14 | p9 | 3/6 |
| 2026-10-21 | no data | no data | no data | 100% | 211.61ms | 14/14 | p9 | 3/6 |
| 2026-10-22 | no data | no data | no data | 100% | 148.51ms | 14/14 | p9 | 3/6 |
| 2026-10-23 | no data | no data | no data | 98.88% | 160.63ms | 14/14 | p9 | 3/6 |
| 2026-10-24 | no data | no data | no data | 100% | 181.84ms | 14/14 | p9 | 3/6 |
| 2026-10-25 | no data | no data | no data | 100% | 121.68ms | 14/14 | p9 | 3/6 |
| 2026-10-26 | no data | no data | no data | 100% | 105.48ms | 14/14 | p9 | 3/6 |
| 2026-10-27 | no data | no data | no data | 100% | 117.54ms | 14/14 | p9 | 3/6 |
| 2026-10-28 | no data | no data | no data | 100% | 162.13ms | 14/14 | p9 | 3/6 |
| 2026-10-29 | no data | no data | no data | 100% | 136.01ms | 14/14 | p9 | 3/6 |
| 2026-10-30 | no data | no data | no data | 100% | 182.80ms | 14/14 | p9 | 3/6 |
| 2026-10-31 | no data | no data | no data | 100% | 212.53ms | 14/14 | p9 | 3/6 |
| 2026-11-01 | no data | no data | no data | 100% | 201.27ms | 14/14 | p9 | 3/6 |
| 2026-11-02 | no data | no data | no data | 98.86% | 245.17ms | 14/14 | p9 | 3/6 |
| 2026-11-03 | no data | no data | no data | 100% | 169.24ms | 14/14 | p9 | 3/6 |
| 2026-11-04 | no data | no data | no data | 100% | 151.00ms | 14/14 | p9 | 3/6 |
| 2026-11-05* | no data | no data | no data | 100% | 147.49ms | 14/14 | p9 | 3/6 |
Alternatives in Data
Imagio Relay · 57 x402 tools for agents (web-intel, trade math, infra, docs) strong 98/100 100% up 30d --- 30d
5 of 471 other ranked services in Data, ordered by the same measured score.
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