{"uid":"cap_volOjwODhBth2HJDSlJBS","slug":"plainchain-x402scan-register-3728f8f4","name":"Plainchain x402scan Register","description":"Gas, balances, token data, address type, approvals, transaction decoding, x402 receipt verification and verifiable randomness on Base, Arbitrum, Ethereum and Optimism. No API key: pay $0.001-$0.01 per call in USDC on Base via x402.","url":"https://plainchain.appin60.com/v1/x402scan/register?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"origin":{"type":"string","description":"https origin of your x402 API, e.g. https://api.example.com"}}},"responseSchema":{"type":"json","example":{"ok":true,"origin":"https://plainchain.appin60.com","x402scan":{"total":10,"failed":0,"source":"openapi","skipped":0,"success":true,"registered":10},"serverPage":"https://www.x402scan.com/server/..."}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.009942","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.009942/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009942","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.009942","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rsEgZ-PBIW76njKmlkHka","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.009942","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Registers your x402-enabled API origin with x402scan so its endpoints are discoverable and indexed","exampleAgentPrompt":"Register my x402 API at https://api.myproject.com with x402scan so agents can discover and pay for my endpoints.","exampleUseCases":[{"title":"Onboard new x402 API to directory","prompt":"I just launched my x402 pay-per-call API at https://api.myblockchaintools.com — can you register it with x402scan so agents can find and use it?"},{"title":"Verify registration after deployment","prompt":"I deployed my x402 API at https://defidata.example.com — register it with x402scan and tell me how many endpoints got indexed successfully."},{"title":"Re-register updated API endpoints","prompt":"I've updated my x402 API endpoints at https://chaininfo.myapp.com — please re-register them on x402scan so the directory reflects the latest version."}],"resultDescription":"Returns a JSON object with ok:true on success, the registered origin URL, and an x402scan summary including total endpoints found, how many were successfully registered, how many failed or were skipped, the data source (e.g. openapi), and a link to the server's public x402scan page.","failureModes":["Invalid or non-HTTPS origin URL returns an error","Origin not reachable or not serving x402 responses causes registration failure","No OpenAPI spec found at origin results in zero endpoints registered","Payment failure in USDC on Base blocks the call","Malformed request body returns 400 error"],"whenToPreferThis":"Use this endpoint when you have built or deployed an x402-compatible API and want it indexed and discoverable by AI agents browsing the x402scan directory. It is specifically for registering API origins — not for querying blockchain data or verifying individual receipts.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T12:30:06.277Z","isFirstParty":false,"canonicalSlug":"plainchain-x402scan-register-3728f8f4"}