{"uid":"cap_WWf-hmY3_VWCRa1GgzUWt","slug":"x402broker-structured-output-json-repair-schema-validator-8bff9b28","name":"x402broker Structured Output JSON Repair & Schema Validator","description":"Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, single quotes) so multi-agent pipelines never crash. (Live x402 v2, IETF MPP & MCP endpoint at https://x402broker.com/v1/structured-output)","url":"https://x402broker.com/v1/structured-output?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","required":["raw_json"],"properties":{"raw_json":{"type":"string","minLength":1,"description":"Malformed, truncated, or markdown-wrapped JSON string to deterministically repair"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USD","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":"$0.002/call","primary":{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"unknown","protocol":"x402","network":"base","amountUsd":null,"per":"call","confidence":"unknown"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_qrV8-88m06I5b7XkK_MwY","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_Ni7eveodTMKuAuJHGAaiF","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Repairs truncated or malformed LLM-generated JSON (trailing commas, markdown fences, single quotes) and validates it against a schema so multi-agent pipelines stay crash-free.","exampleAgentPrompt":"The LLM just returned this garbled JSON with trailing commas and markdown fences — can you repair it and give me back clean, valid JSON I can actually parse?","exampleUseCases":[{"title":"Fix crashed multi-agent pipeline output","prompt":"My orchestrator agent got back a JSON blob from the sub-agent but it has single quotes instead of double quotes and a trailing comma — can you repair it so the next step in my pipeline doesn't blow up?"},{"title":"Strip markdown fences from structured output","prompt":"The LLM wrapped its JSON response in triple backtick code fences again — please strip those out and return just the clean, parseable JSON object."},{"title":"Validate LLM response against expected schema","prompt":"I need to check that this JSON the model returned actually matches my expected schema before I pass it to my database layer — can you repair any syntax issues and confirm it validates?"}],"resultDescription":"Returns a syntactically correct, fully parsed JSON object with common LLM-output errors fixed (trailing commas removed, markdown fences stripped, single quotes converted to double quotes, truncations repaired) and optionally validated against a provided schema.","failureModes":["Input JSON too corrupted to deterministically repair — returns error indicating unparseable input","Schema mismatch after repair — returns validation failure with field-level details","Missing required 'input' field in request body — returns 400 bad request","Network timeout or service unavailability — returns 5xx error"],"whenToPreferThis":"Choose this endpoint when your multi-agent or LLM pipeline receives structured output that fails JSON.parse() due to common LLM formatting mistakes (trailing commas, markdown fences, single quotes, truncation). Ideal for any orchestration layer that needs deterministic, crash-proof JSON normalization before passing data downstream, especially when you cannot control the upstream LLM's output format.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:41:11.895Z","isFirstParty":false,"canonicalSlug":"x402broker-structured-output-json-repair-schema-validator-8bff9b28"}