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LedgerBrain x402 KYA KYT KYE Compliance API

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

BASE URL https://api.ledgercore.io │ WEBSITE https://ledgerbrain.io │ ENDPOINTS 3 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-06-12 │ MONITORED SINCE 2026-06-12

ASSESSMENT

updated 2h ago

Evidence-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.

jump to compliance checklist

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-derived

Provides blockchain compliance reports including KYA, KYT, and KYE for crypto addresses, transactions, and entities.

category: blockchain-compliance
in: body
auth: none

blockchaincompliancerisk-screeningcryptodue-diligence

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	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

3 endpoints

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.

// request

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 7d 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.

UPTIME

7d UPTIME 100%

RESPONSE TIME

AVG RESP 400ms

PRICE (captured 402, USD)

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

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

TIME STATUS RESP

22:34:03 UTC ● OK 310ms

22:18:04 UTC ● OK 211ms

22:02:04 UTC ● OK 271ms

21:46:03 UTC ● OK 212ms

21:30:04 UTC ● OK 600ms

21:14:06 UTC ● OK 207ms

20:58:03 UTC ● OK 222ms

20:42:03 UTC ● OK 309ms

20:26:03 UTC ● OK 296ms

20:10:04 UTC ● OK 262ms

19:54:03 UTC ● OK 332ms

19:38:04 UTC ● OK 264ms

19:22:03 UTC ● OK 292ms

19:06:03 UTC ● OK 317ms

18:50:05 UTC ● OK 310ms

18:34:03 UTC ● OK 311ms

18:18:03 UTC ● OK 415ms

18:02:04 UTC ● OK 261ms

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RUN THIS SERVICE?

Keep this listing accurate: propose changes to the name, description, website, category or add new endpoints to monitor. Ownership is verified with a domain proof and every change is reviewed manually; measured data stays read-only.

[ update this listing ]