{"uid":"cap_r4Z0HeZjZAWj6djA4U87n","slug":"delx-commerce-live-probe-x402-endpoint-liveness-check-cb0e749f","name":"Delx Commerce Live Probe — x402 Endpoint Liveness Check","description":"Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.","url":"https://commerce.delx.ai/api/v1/x402/live-probe?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"url":{"type":"string","maxLength":2048,"minLength":12,"description":"Single https x402 endpoint to handshake. One URL per call; no payment is sent."},"capability":{"type":"string","maxLength":120,"minLength":1,"description":"Optional capability tag stored on the observation receipt for later directory queries."}}},"responseSchema":{"type":"json","example":{"url":"https://api.example-x402.test/pay","kind":"x402_live_probe","paid":false,"latency_ms":42,"receipt_id":"0000000000000000000000000000000000000000000000000000000000000000","http_status":402,"observed_at":"2026-08-14T19:00:00+00:00"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_h7-on3pHQTI1lETpcn1Ek","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Probes a single x402-enabled HTTPS endpoint to confirm it is live and returns a 402 payment-required response, without sending any payment.","exampleAgentPrompt":"Can you probe https://api.example-x402.com/pay to check if it's a live x402 endpoint — tag the observation as 'weather-api' — without sending any payment?","exampleUseCases":[{"title":"Pre-integration x402 endpoint sanity check","prompt":"Before I wire up payments, can you check if https://api.acme-data.com/v1/report is actually live and responding with a 402? Tag it 'acme-report' so I can look it up later."},{"title":"Monitoring x402 service uptime","prompt":"I need to know right now whether https://api.nftprices.io/x402/quote is still up and accepting x402 handshakes — give me its latency and status without paying anything."},{"title":"Validating a newly deployed x402 API","prompt":"I just deployed my x402 endpoint at https://my-agent-api.xyz/api/pay — can you probe it and confirm it's returning 402 correctly? Label the check as 'deploy-verify'."}],"resultDescription":"A JSON object confirming whether the target URL returned an HTTP 402 status (indicating active x402 support), along with round-trip latency in milliseconds, a verifiable receipt ID, the observation timestamp, and a 'paid: false' flag confirming no payment was made during the probe.","failureModes":["Target URL is not reachable — endpoint may be down or misconfigured, latency_ms may be high or absent","Target URL does not return 402 — endpoint may not support x402, http_status will reflect the actual response code","URL is malformed or too short (under 12 characters) — request will be rejected with a validation error","URL exceeds 2048 characters — request rejected due to maxLength constraint","Network timeout on probe — receipt_id may be zeroed and latency_ms unusually high"],"whenToPreferThis":"Use this endpoint when you need to verify that a specific x402-compliant URL is live and correctly configured before integrating it into a payment workflow, or when you want a verifiable, timestamped observation receipt of a liveness check without risking any funds. Prefer this over general HTTP ping tools when the x402 protocol handshake itself (the 402 response) is what needs to be confirmed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T04:22:47.678Z","isFirstParty":false,"canonicalSlug":"delx-commerce-live-probe-x402-endpoint-liveness-check-cb0e749f"}