{"uid":"cap_isMBsMGAgppn07g6nAM26","slug":"quantaflow-x402-api-gateway-jsonplaceholder-proxy-d039e7c7","name":"QuantaFlow x402 API Gateway – JSONPlaceholder Proxy","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/jsonplaceholder?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"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_dRku3sOkfTyL7hRNyHe8X","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":"Proxies HTTP requests to the JSONPlaceholder API via the x402 micropayment protocol, charging $0.01 USDC per call.","exampleAgentPrompt":"Fetch the JSONPlaceholder post with id 1 by routing the GET request through the QuantaFlow x402 gateway at path /posts/1 — pay the 0.01 USDC fee per call.","exampleUseCases":[{"title":"Retrieve placeholder post via x402","prompt":"Pull the JSONPlaceholder post at /posts/5 through the QuantaFlow x402 gateway and return the title and body — pay the micropayment fee automatically."},{"title":"Test x402 micropayment with mock data","prompt":"I want to test the x402 payment flow using a simple known API — send a GET to /users/1 via the QuantaFlow JSONPlaceholder proxy and confirm the payment goes through."},{"title":"POST fake data through paid gateway","prompt":"Forward a POST request to /posts on the JSONPlaceholder proxy via QuantaFlow with body '{\"title\":\"foo\",\"body\":\"bar\",\"userId\":1}' and show me the response after the 0.01 USDC payment."}],"resultDescription":"The raw upstream response body from JSONPlaceholder (JSON), passed through as-is along with the content-type header, after the x402 micropayment of $0.01 USDC is settled on-chain.","failureModes":["Insufficient USDC balance causes payment failure and request rejection","Invalid path returns a 404 from JSONPlaceholder passed through the proxy","Malformed JSON body causes upstream error response","x402 facilitator unavailable leads to payment timeout or gateway error","Unsupported HTTP method may be rejected by upstream"],"whenToPreferThis":"Choose this endpoint when you need to test or demonstrate the x402 micropayment protocol against a well-known, predictable REST API (JSONPlaceholder), or when you want to integrate on-chain USDC payments into a workflow that calls standard REST endpoints. Not suitable for production data retrieval or real-world REST APIs beyond JSONPlaceholder.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:44:36.382Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-jsonplaceholder-proxy-d039e7c7"}