KYACheck

Name: KYACheck
Price: 0.1 USDC
Availability: InStock

Machine-native, on-demand data for AI agents and traders: 71 pay-per-call APIs across markets and options, crypto and DeFi risk, sanctions and know-your-agent checks, macro and the real economy, and the cost of compute and power. USDC on Base or Solana via x402. No subscription, no API key.

TradingLiveeip155:8453Exactvia cdp

https://kya.lonestaroracle.xyz/check

KyaSanctionsOfacComplianceWallet-risk

Calls · 30d

3↑ 24%

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far.

$326.02

Verified settled volume

3,402 settlements proven x402 by their on-chain EIP-3009 marker.

$0.100

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-10-16 12:39Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x52Ab53912D37759B2ad364f22dD06B16714b6C06

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x52Ab53912D37759B2ad364f22dD06B16714b6C06",
      "scheme": "exact",
      "network": "base",
      "mimeType": "",
      "resource": "https://kya.lonestaroracle.xyz/check",
      "description": "KYA / counterparty check for a wallet (and optional name): OFAC + wallet risk + signed verdict",
      "maxAmountRequired": "100000",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
      },
      "payTo": "3nmeVj5m9Uq2hSTfsVsn3tJMHRJQNMKR1AjzyUJbrSgw",
      "scheme": "exact",
      "network": "solana",
      "mimeType": "",
      "resource": "https://kya.lonestaroracle.xyz/check",
      "description": "KYA / counterparty check for a wallet (and optional name): OFAC + wallet risk + signed verdict",
      "maxAmountRequired": "100000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.1USDC≈ $0.1 USD

on Base · exact scheme

Pay 0.1 USDC on Base to 0x52Ab…b6C06. The signed payment is good for 5 minutes.

Paid to: 0x52Ab…b6C06
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 100000 smallest units

100000units

on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 3nmeVj…brSgw
Token contract: EPjFWd…TDt1v
Payment window: 5 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x52Ab53912D37759B2ad364f22dD06B16714b6C06",
    "amount": "100000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM"
    },
    "payTo": "3nmeVj5m9Uq2hSTfsVsn3tJMHRJQNMKR1AjzyUJbrSgw",
    "amount": "100000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "name": "OFAC",
          "chain": "base",
          "wallet": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
        }
      },
      "output": {
        "type": "object",
        "format": "json",
        "example": {
          "reasons": [
            "wallet is on the OFAC SDN list (EXAMPLE ENTITY, program CYBER2)"
          ],
          "receipt": {
            "receipt": {
              "service": "KYA Check",
              "verdict": "BLOCK",
              "checked_at": "2026-09-24T17:00:00Z"
            },
            "signature": {
              "alg": "secp256k1-eip191",
              "sig": "0x...",
              "signer": "0x54aB6b8Ddbedc057F230D1b78E6cd4677d304E18"
            }
          },
          "verdict": "BLOCK",
          "ofac_name": null,
          "checked_at": "2026-09-24T17:00:00Z",
          "ofac_wallet": {
            "listed": true,
            "program": "CYBER2",
            "currency": "ETH",
            "sdn_name": "EXAMPLE ENTITY"
          },
          "wallet_risk": {
            "chain": "base",
            "risk_flags": [
              "sanctioned"
            ],
            "risk_label": "critical",
            "risk_score": 10
          }
        }
      }
    },
    "schema": {
      "name": "KYACheck",
      "tags": [
        "kya",
        "sanctions",
        "ofac",
        "compliance",
        "wallet-risk"
      ],
      "type": "object",
      "version": "1.0.0",
      "category": "compliance",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string",
                  "title": "Name",
                  "description": "Optional agent, company or person name to screen against OFAC"
                },
                "chain": {
                  "type": "string",
                  "title": "Chain",
                  "default": "base",
                  "description": "EVM chain for on-chain risk: base, eth, arb, poly, bsc"
                },
                "wallet": {
                  "type": "string",
                  "title": "Wallet",
                  "description": "Agent/counterparty wallet address (EVM 0x... or any OFAC-listed crypto address)"
                }
              }
            }
          }
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "reasons": [
                "wallet is on the OFAC SDN list (EXAMPLE ENTITY, program CYBER2)"
              ],
              "receipt": {
                "receipt": {
                  "service": "KYA Check",
                  "verdict": "BLOCK",
                  "checked_at": "2026-09-24T17:00:00Z"
                },
                "signature": {
                  "alg": "secp256k1-eip191",
                  "sig": "0x...",
                  "signer": "0x54aB6b8Ddbedc057F230D1b78E6cd4677d304E18"
                }
              },
              "verdict": "BLOCK",
              "ofac_name": null,
              "checked_at": "2026-09-24T17:00:00Z",
              "ofac_wallet": {
                "listed": true,
                "program": "CYBER2",
                "currency": "ETH",
                "sdn_name": "EXAMPLE ENTITY"
              },
              "wallet_risk": {
                "chain": "base",
                "risk_flags": [
                  "sanctioned"
                ],
                "risk_label": "critical",
                "risk_score": 10
              }
            }
          }
        }
      },
      "description": "Know-your-agent (KYA) / counterparty check, made agent-callable. Before your agent pays, hires or trusts another agent, one x402 call screens that agent's wallet against the US Treasury OFAC SDN list - including the ~500 crypto addresses OFAC publishes, matched exactly - optionally screens its name/entity against the SDN and alternate-names lists, scores the wallet's on-chain risk (GoPlus address-security flags such as sanctioned, mixer, phishing, money laundering), and returns PASS / REVIEW / BLOCK with plain-language reasons. The verdict is signed as an LSO Receipt (secp256k1 / EIP-191) so the result can be verified independently and passed on-chain: ethers.verifyMessage must recover LSO's published signer. Compliance is checked off-chain; the verified result travels. $0.10 in USDC on Base or Solana via x402. Sources: OFAC SDN (refreshed daily), GoPlus, public RPC."
    }
  }
}

Provenance

Seen in the source catalog: 2026-10-16 12:39Z
Last indexed by Roundhouse: 2026-10-26 17:10Z
Last enriched (probe, favicon, geo): 2026-09-25 12:15Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 402

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 32 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service KYACheck and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=KYACheck'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://kya.lonestaroracle.xyz/check, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.