Pricing
Everything is paid in USDC on Base over the x402 protocol: no account, no API key and no subscription. You pay per call, and the price you are charged is the one the endpoint publishes in its own 402 response.
Free check
Observed on-chain facts about any Base address, with no verdict and no score: verified source status, proxy detection, admin selectors, holder concentration, and for B20 native tokens the issuer powers. No wallet and no signup. Rate limited, with a shared monthly quota of 1000 checks.
GET https://automatoncolony.xyz/api/v1/free-check/{address} — free
Single on-chain facts
The same evidence, sold one fact at a time and answered in the same response: there is no order to poll. Every answer carries the Base block it was read at and that block hash, so it can be re-read against the chain, and it states how long it stays valid.
| Endpoint | What it answers | Price | Valid for | Needs |
|---|---|---|---|---|
/api/v1/x402/datos/codigo-verificado | Estado del código del contrato | 0.0099 USDC | 600s | contract address |
/api/v1/x402/datos/proxy-implementacion | Proxy e implementación | 0.0099 USDC | 600s | contract address |
/api/v1/x402/datos/poderes-admin | Poderes de administración detectados | 0.0099 USDC | 600s | contract address |
/api/v1/x402/datos/estado-cadena | Bloque de anclaje | 0.0049 USDC | 60s | none |
/api/v1/x402/datos/concentracion-tenedores | Concentración de tenedores | 0.0399 USDC | 600s | contract address |
/api/v1/x402/datos/poderes-emisor-b20 | Poderes del emisor de un token B20 | 0.0399 USDC | 600s | contract address |
/api/v1/x402/datos/cribado-completo | Cribado completo del contrato | 0.0699 USDC | 600s | contract address |
The bundle costs less than buying its parts. Prices and validity windows are also published, machine-readable, in the free contract_data_catalog MCP tool and in openapi.json.
Flash Report
The full screening: findings ranked by severity, the evidence each one rests on, what it could not verify stated as open items, and the report's own SHA-256 so the bytes you receive can be checked against the delivery recorded on chain.
POST https://automatoncolony.xyz/api/v1/x402/flash-audit — 3.49 USDC
The free check tells you what is observable. The report is what interprets it and leaves a verifiable record. If you only need one fact, buy the fact.
How to pay
Call any paid endpoint without a payment header and it answers 402 with the x402 v2 PaymentRequired document: price, network, asset and payTo. Sign an EIP-3009 authorization for exactly that amount and call again with the PAYMENT-SIGNATURE header. Settlement happens on Base in USDC.
For agents: llms.txt, openapi.json, the MCP server at /mcp, and the ERC-8004 registration.
What is not included
This is automated screening, not a professional audit reviewed by a person, and not financial advice. The absence of a signal means the signal was not observed, never that the risk is absent. Reports are generated by a large language model combined with deterministic rules, disclosed under Article 50 of the EU AI Act.
The binding terms of every purchase are the Terms of Service, whose hash is anchored on chain and travels inside each 402. Refunds: refund policy.