{"uid":"cap_8fC0FBnPnESdQoFE4_Eyu","slug":"losbeto-ping402-x402-payment-loop-smoke-test-991a2c1e","name":"Losbeto /ping402 — x402 Payment Loop Smoke Test","description":"OpenAI-compatible LLM gateway at $0.005/call — change base_url, pay in USDC. Plus pay-per-call market data: multi-oracle price consensus, sentiment, forex, equities, commodities, Brazil macro (BCB/B3) and crypto. No API keys, no accounts. USDC on Base, Solana, Algorand and Polygon via x402.","url":"https://markets.losbeto.xyz/ping402?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","properties":{"queryParams":{"type":"object","required":[],"properties":{"format":{"type":"string","description":"Response format (json)"}}}}},"output":{"type":"object","properties":{"example":{"type":"object","description":"x402 hello-world: the cheapest live call on this node ($0.001), built for agents to smoke-test the full payment loop — 402 challenge, wallet signature, facilitator settlement, JSON delivery — against a real merchant. Returns a signed liveness receipt, the node version and a map to the free trial and the full catalog. Zero upstream calls."}}}}},"responseSchema":{"type":"json"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_uBEeR-7M4a1Op6fH6Xbg8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a signed liveness receipt and node/catalog info to let agents smoke-test the full x402 payment flow (402 challenge → wallet signature → facilitator settlement → JSON delivery) at minimum cost ($0.001 USDC).","exampleAgentPrompt":"Run the cheapest possible live x402 payment test against the Losbeto node — I want to confirm my agent wallet can complete the full 402 challenge, sign, settle via the facilitator, and get back a signed liveness receipt, all for $0.001 USDC on Base.","exampleUseCases":[{"title":"Pre-flight agent wallet check","prompt":"Before I send my agent into production, run the $0.001 Losbeto ping to make sure its Base wallet can actually complete the full x402 payment loop — I need a signed receipt back as proof."},{"title":"x402 integration smoke test","prompt":"I just wired up x402 USDC payments to my agent — can you hit the Losbeto /ping402 endpoint to do a live end-to-end test of the 402 challenge and facilitator settlement for just $0.001?"},{"title":"Discover Losbeto catalog cheaply","prompt":"Use the Losbeto ping call to get the node version and a map to all the market data and LLM endpoints available, and confirm everything is live — it should only cost a tenth of a cent in USDC."}],"resultDescription":"A JSON object containing a signed liveness receipt (proving the full x402 payment loop completed), the current node version, a pointer to the free trial, and a map of the full Losbeto endpoint catalog. No upstream calls are made; response is generated locally by the node.","failureModes":["Insufficient USDC balance in agent wallet — payment rejected before data is returned","Unsupported blockchain network — payment attempted on a chain not supported (only Base, Solana, Algorand, Polygon accepted)","Facilitator settlement failure — 402 challenge completed but facilitator cannot confirm payment","Invalid format query param — unexpected value causes malformed request","Node downtime — merchant node offline, no 402 challenge issued"],"whenToPreferThis":"Choose this endpoint when you need the absolute cheapest ($0.001 USDC) live end-to-end test of an x402 payment pipeline against a real merchant node. It is the canonical smoke-test call for agents integrating x402 micropayments — use it to validate wallet configuration, chain support, facilitator connectivity, and JSON delivery before committing to higher-cost calls on the same node. Prefer it over other liveness checks when you specifically need a signed receipt proving payment completed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T12:46:21.953Z","isFirstParty":false,"canonicalSlug":"losbeto-ping402-x402-payment-loop-smoke-test-991a2c1e"}