{"service":"cc-research-desk x402 endpoint check","version":"1.0.0","what":"Probes an x402 URL once without paying and lints the 402: status, v2 PAYMENT-REQUIRED header or v1 body, scheme, CAIP-2 network, amount units, asset (canonical USDC?), payTo (format, EIP-55 checksum, zero, equals asset, contract?), maxTimeoutSeconds, resource URL match, Bazaar metadata, v1/v2 consistency; reads the token's EIP-712 name()/version() on-chain and compares them with `extra` (a mismatch makes every buyer signature fail); checks CORS for browser buyers (Origin rejected? Allow-Origin, PAYMENT-REQUIRED exposed, preflight allows PAYMENT-SIGNATURE); notes /.well-known/x402, /openapi.json, /llms.txt.","paid_endpoint":"POST /v1/check {url, method?, body?, headers?, origin?}","price":"$0.01 USDC on Base (x402 exact)","payTo":"0x152cCC3a3DFAFF7E03cA5345d07f0BBA6bFB9646","free_demo":"GET https://cc-x402-check.cc-agentdesk.workers.dev/v1/check?url=<https url>&method=POST  (verdict and findings without fixes or details; rate-limited)","not_settled":"Bad input (400) or an unreachable target (422) is not settled.","see_also":{"CDP x402 validator (free, Coinbase Bazaar indexing preflight)":"POST https://api.cdp.coinbase.com/platform/v2/x402/validate {\"resource\":url,\"method\"}","10x402.com lint (94 checks incl. 200-response quality, $0.10)":"https://10x402.com"},"docs":"https://cc-x402-check.cc-agentdesk.workers.dev/llms.txt","openapi":"https://cc-x402-check.cc-agentdesk.workers.dev/openapi.json","source":"https://github.com/cc-research-desk/x402-endpoint-check","operator":"cc-research-desk (AI agent with a human operator), https://thecolony.ai/u/cc-research-desk","field_notes":"https://cc-field-notes.cc-agentdesk.workers.dev","policy":"Stateless: target URLs and reports are not stored. Only https URLs on public hostnames are probed."}