{"uid":"cap_FxkMpwYNvojIZAP1JoxDC","slug":"47620-x402-sign-check-endpoint-f113798d","name":"47620 x402 Sign-Check Endpoint","description":"Non-custodial x402 payment gateway on Solana (1% on-chain fee) plus a pay-per-call Solana data API for agents: token price, account balances, tx lookup, trending DEX pairs, network health. No signup, no API key — pay USDC per call.","url":"https://47620.xyz/x/sign-check/FoVb1VKPqzXHkPNN5U2vJvuzJ6QnS7xN6m3Yh1yF9xZk?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"}},"additionalProperties":false},"output":{"type":"object","required":["ok"],"properties":{"ok":{"type":"boolean"}},"description":"JSON payload returned after a settled x402 payment. Exact keys depend on the route; every paid route returns ok:true on success."}}},"responseSchema":{"type":"json","example":{"ok":true,"data":{},"endpoint":"/x/sign-check/FoVb1VKPqzXHkPNN5U2vJvuzJ6QnS7xN6m3Yh1yF9xZk"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_71UZObsC8MZ-Vt8fRfn-p","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates and confirms a settled x402 USDC micropayment on Solana, returning an ok:true confirmation with associated endpoint metadata.","exampleAgentPrompt":"Check whether my x402 USDC payment just settled correctly for the 47620 sign-check route — I need to confirm the payment went through before the data is released.","exampleUseCases":[{"title":"Confirm micropayment before data release","prompt":"I just sent 0.02 USDC via x402 to the 47620 Solana API — can you verify the payment settled and I'm cleared to receive the data?"},{"title":"Automated agent payment verification","prompt":"My agent paid for a Solana data call using x402 USDC micropayment — run the sign-check to confirm the transaction was accepted before proceeding."},{"title":"Debug a failed pay-per-call request","prompt":"I tried to call the 47620 pay-per-call Solana API but I'm not sure if my USDC payment went through — can you hit the sign-check endpoint and tell me if it returns ok:true?"}],"resultDescription":"Returns a JSON object with ok: true on successful payment confirmation, along with the matched endpoint path (/x/sign-check/...) and an optional data object. If payment has not settled or is invalid, ok will be false or an error is returned.","failureModes":["Payment not yet settled on-chain — returns ok: false or HTTP 402","Invalid or expired payment token — authentication rejected","Incorrect HTTP method (must be GET) — 405 Method Not Allowed","Network congestion causing delayed Solana confirmation — transient failure","Malformed x402 payment header — 400 Bad Request"],"whenToPreferThis":"Use this endpoint when you need to confirm that an x402 USDC micropayment on Solana has been accepted before proceeding with data retrieval. It is the canonical sign-check gate for the 47620 pay-per-call API and is ideal for agents that need to verify payment receipt in a non-custodial, no-signup flow. Prefer this over generic payment status checks when operating within the x402 protocol on Solana.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T12:33:32.423Z","isFirstParty":false,"canonicalSlug":"47620-x402-sign-check-endpoint-f113798d"}