{"uid":"cap_xBocjvrIrINL0H_HQsy__","slug":"l402-space-x402-ping-e3769f7a","name":"l402.space x402 Ping","description":"Any wallet. Any paid API. Any rail. l402.space is a payment gateway that lets you pay for any 402-gated API with any agentic wallet — over L402, x402, or MPP (Lightning or Tempo). Browse live stats and grab a proxy URL for any endpoint.","url":"https://l402.space/x402/ping","method":"GET","headers":{},"bodySchema":{"type":"object","required":["echo"],"properties":{"echo":{"type":"string","description":"Any string; echoed back verbatim in the pong response."}}},"responseSchema":{"type":"object","properties":{"echo":{"type":"string"},"pong":{"type":"boolean"},"rail":{"type":"string"},"message":{"type":"string"},"network":{"type":"string"},"priceUsd":{"type":"number"},"amountSats":{"type":"integer"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_iU_RhePMHx7RoOemK4QNh","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"A paid echo/ping endpoint that verifies x402 payment connectivity by echoing back a user-supplied string along with payment rail metadata.","exampleAgentPrompt":"Can you send a ping to the l402.space x402 gateway with the echo string 'hello-test' to verify my payment wallet can successfully complete an x402 micropayment?","exampleUseCases":[{"title":"Wallet integration smoke test","prompt":"Send a ping to the l402.space x402 endpoint with the echo string 'wallet-check' so I can confirm my new agentic wallet is set up correctly and can actually pay for 402-gated APIs."},{"title":"Payment rail diagnostics","prompt":"Ping the l402.space x402 gateway with echo text 'rail-diagnostic' — I want to see which payment rail and network it used so I can debug why my Lightning payments aren't going through."},{"title":"Cheapest possible 402 connectivity test","prompt":"Run a quick x402 ping through l402.space with the echo message 'integration-test' to verify our CI pipeline can make live paid API calls before we deploy to production."}],"resultDescription":"Returns a JSON object containing the echoed input string, a 'pong' boolean confirming success, the payment rail used (e.g. x402, L402, MPP), the network (e.g. Lightning, Tempo), the price in USD, the amount in satoshis, and a status message. Confirms end-to-end payment flow completed successfully.","failureModes":["Payment not authorized — wallet lacks funds or has not approved the $0.01 USDC charge","Invalid or missing 'echo' parameter — returns 400-level error","Payment rail mismatch — wallet does not support the requested protocol (L402/x402/MPP)","Network unavailable — Lightning or Tempo node unreachable","Stale payment token — 402 challenge expired before wallet responded"],"whenToPreferThis":"Use this endpoint when you need the cheapest possible live test to confirm an agentic wallet can successfully negotiate and pay a 402-gated API call. Ideal for CI/CD smoke tests, wallet integration validation, or debugging which payment rail (L402, x402, MPP) is active. Prefer this over a real paid endpoint when you just need to verify payment plumbing without side effects beyond the $0.01 test charge.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:33:25.341Z","isFirstParty":false}