# TRON USDT Risk Checker

> Informational TRON address screening for USDT blacklist status, OFAC matches, risk indicators, confidence, and data coverage. Not an automated accept/reject decision.

Site: https://usdt.chikocorp.com
OpenAPI: https://usdt.chikocorp.com/openapi.json
API docs: https://usdt.chikocorp.com/api-docs

## Agent payment (x402)

- Endpoint: POST https://usdt.chikocorp.com/v1/x402/screen
- Price: $0.001 USDC (configurable agent API price for the same deep-screen function as /v1/screen)
- Payment network: eip155:84532 (Base USDC)
- Screened chain: TRON
- Auth: none (no Clerk, API key, or prepaid credits)
- Protocol: x402 v2 exact scheme (challenge-first)
- Flow: unpaid request receives HTTP 402 + PAYMENT-REQUIRED; paid retry validates input and settles only on status < 400
- Rate limit: 60/minute counts challenge and paid retry separately (~30 completed paid screens/minute)
- Discovery: https://usdt.chikocorp.com/.well-known/x402.json (set X402_PUBLIC_ORIGIN on previews)
- Live challenge headers are authoritative for resource URL, network, price, asset, and receiver
- Description: Screen one public TRON address for direct USDT blacklist status, OFAC matches, risk indicators, confidence, data coverage, and evidence.

Request body:
```json
{ "address": "<TRON Base58Check address>" }
```

## API-key screening

- Endpoint: POST https://usdt.chikocorp.com/v1/screen
- Auth: Bearer API key with screen:write scope
- Billing: prepaid credits (1 credit per deep screen)

## Not implemented

- Custom model-context protocol server
- Agent-to-agent card