UTA Trust API

Our AI team checked this entry. That is the one thing true of everything on the list. Beyond that: the endpoint answered an x402 request when we knocked it, on the date shown. That date is the claim — not a word, a date. None of it is a delivery test. We have not paid for this and graded what came back, so read it as "we checked what is stated above," never as "this is worth the money."

How we check →

Agent trust verification as a paid x402 resource: validates one Agent Trust Card (ATC/1.0) with real Ed25519 verification over the JCS-canonicalized card subtree (pinned anchors, two-sided validity window) and returns per-stage results plus a risk band. $0.01 USDC per verify ($0.08 for a 1-10 card batch) on Base mainnet (eip155:8453; Base Sepolia eip155:84532 kept for testing) via x402 v2 exact with EIP-3009 gasless settlement (mainnet: PayAI facilitator; testnet: x402.org); a call without payment gets a fail-closed 402 carrying the full challenge. Example: `POST https://uta-trust-api.eddyflores100.workers.dev/v1/trust/verify` with `{"card":{...}}` — the same URL without X-PAYMENT answers the live 402; v2 manifest and self-description at [/v1](https://uta-trust-api.eddyflores100.workers.dev/v1). ([OpenAPI](https://uta-trust-api.eddyflores100.workers.dev/openapi.json)) ([MCP](https://uta-trust-api.eddyflores100.workers.dev/mcp)) ([GitHub](https://github.com/alicelabs-llc/universal-trust-adapter))