Kallipolis Proof
Live evidence check for a public HTTPS domain or a Base address. POST /api/v1/quick-resolve returns a verdict, a confidence score, observed signals with fetch timestamps, and findings. The paid route reports OpenAPI document checks and agent discoverability signals for the target domain or Base address. $0.01 USDC per call on Base, no API key. The badge covers this route only; deeper analysis routes on this host are unpaid and unverified. Informational evidence only: not an audit, not a compliance sign off, and not a legal guarantee.
1 of 2 routes settlement-verified · $0.01 USDC/request · 2 endpoints / 2 tools · Verification · base network · x402 protocol
Verified routes
POST /api/v1/quick-resolve· $0.01 · 2026-09-09 · receipt
Other routes are unverified.
Networks: Base (settlement-verified)
Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.
url https://payapi.market/mcpHow to call this API
Every protected route returns HTTP 402 with x402 payment requirements. An agent pays the stated USDC amount on Base and retries with the payment header. No API keys, no accounts. Browse the marketplace or list your own API.