x402 pay-per-use KYA, KYT, and KYE crypto compliance API for AI agents. Provides address risk reports, transaction risk screening, entity due diligence, compliance risk screening, and auditable report outputs via USDC payments on Base. No LedgerBrain API key required for x402 endpoints.
Pay from $0.10 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-06-11 · $19.20 all-time · settled via coinbase
ASSESSMENT
updated 1h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 100%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 100%
- uptime 90d
- 100%
- response p95
- 698ms
- avg response
- 400ms
- total checks
- 2,740
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.10 (p87 in Blockchain)
- price (min)
- $0.10
- category percentile (min)
- p87 in Blockchain
- endpoints / prices
- 3 / 1
- model
- flat
- stability
- 50%
risk clean
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
- -
- registrar
- -
- hosting
- custom
- domain created
- ---
Identity facts, not a risk score.
traction $2.20 30d · 4 buyers
- volume 30d
- $2.20
- buyers 30d
- 4
- settlements 30d
- 13
- first settlement
- 2026-06-11
- last settlement
- 2026-07-28
- top buyer share
- 45% of 30d volume
- trend 7d vs 30d
- 1.75x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $19.20
- settlements all-time
- 30
- median settlement 30d
- $0.10
- max settlement 30d
- $1.00
- settled via
- coinbase
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedProvides blockchain compliance reports including KYA, KYT, and KYE for crypto addresses, transactions, and entities.
- category
- blockchain-compliance
- in
- body
- auth
- none
AI-generated summary. The measured data is never altered by it.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET |
|---|---|---|---|---|---|
| POST | /api/v1/x402/kya/report | $0.10 | Base | USDC | |
| POST | /api/v1/x402/kye/report | $0.10 | Base | USDC | |
| POST | /api/v1/x402/kyt/report | $0.10 | Base | USDC |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /api/v1/x402/kya/report returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://api.ledgercore.io/api/v1/x402/kya/report'
// 402 response (captured by monitor) · 3 payloads · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.ledgercore.io/api/v1/x402/kye/report",
"mimeType": "application/json",
"description": "KYE entity profile report — pay per use via x402"
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.ledgercore.io/api/v1/x402/kya/report",
"mimeType": "application/json",
"description": "KYA address risk report — pay per use via x402"
},
"x402Version": 2
},
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
"amount": "100000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://api.ledgercore.io/api/v1/x402/kyt/report",
"mimeType": "application/json",
"description": "KYT transaction risk report — pay per use via x402"
},
"x402Version": 2
}
] OVER TIME
All charts share the 30d window selected here. Every series is also served as JSON at /api/v1/services/ledgerbrain-x402-kya-kyt-kye-compliance-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
Median across 3 endpoints. Use the selector to isolate one.
COMPLIANCE
14/14 checks pass · grade A- 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
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) · click to expand
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