{"uid":"cap_j0jnBWxq9itUYUZ3GgkSb","slug":"reliable-json-url-preflight-check-8367af88","name":"Reliable JSON URL Preflight Check","description":"Deterministic JSON repair and JSON Schema validation for AI agents. Free MCP, inspect, validate, repair. Paid POST /v1/json/reliable 0.003 USDC via x402 on Base.","url":"https://agent-json-reliability.onrender.com/v1/url/preflight?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"example":{"ok":true}},"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__gDZ_fi2kYspk-0I1RVrh","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":"Performs a preflight check on a URL before fetching it for JSON repair or validation processing","exampleAgentPrompt":"Before we start repairing the JSON from https://api.example.com/data/results.json, can you do a preflight check on that URL to make sure it's reachable and ready for processing?","exampleUseCases":[{"title":"Pre-validate data source before pipeline","prompt":"I'm about to kick off a JSON repair job on https://myservice.internal/export/records.json — can you first check if that URL is reachable so we don't waste time sending a broken link to the repair step?"},{"title":"Agent self-check before JSON fetch","prompt":"My agent needs to pull JSON from https://raw.githubusercontent.com/org/repo/main/config.json — run a preflight on that URL before it tries to validate the schema, so we can catch connectivity issues early."},{"title":"Debug unreachable JSON endpoint","prompt":"The JSON validation keeps failing and I'm not sure if the URL itself is the problem — can you preflight check https://partner-api.example.com/v2/feed.json and tell me if it's reachable?"}],"resultDescription":"Returns a simple JSON object with an 'ok' boolean indicating whether the URL passed the preflight check and is accessible for subsequent JSON repair or validation operations.","failureModes":["URL is unreachable or times out — ok: false returned","Malformed URL input — request rejected","URL points to non-JSON content — may still pass preflight but fail in later steps","Rate limiting or upstream connectivity issues on the render.com host","Payment not completed for paid endpoints — 402 response"],"whenToPreferThis":"Use this endpoint as a first step in any JSON repair or validation workflow when the JSON source is a remote URL rather than an inline payload. It's the right choice when you want to fail fast before paying for a repair call, when debugging connectivity issues with a JSON data source, or when building a robust agent pipeline that needs to confirm URL availability before proceeding.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:48:27.276Z","isFirstParty":false,"canonicalSlug":"reliable-json-url-preflight-check-8367af88"}