{"uid":"cap_zz8GDi7tg_VR7ojxspqqW","slug":"hn-pulse-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-6216f46f","name":"Deterministic A2A Broken-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://hn-pulse.agentdiet.dev/v1/structured-output)","url":"https://hn-pulse.agentdiet.dev/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":[],"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":"static","protocol":"mpp","network":"tempo","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_j9CkGyErH_W3igFdZqWj6","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"hn-pulse.agentdiet.dev","brandSlug":"hn-pulse-agentdiet-dev-mpp","brandBaseUrl":"https://hn-pulse.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Repairs truncated or malformed LLM-generated JSON (trailing commas, markdown fences, single quotes) to prevent multi-agent pipeline crashes","exampleAgentPrompt":"This JSON from our LLM pipeline is broken — it has trailing commas and markdown code fences around it. Can you deterministically repair it and give me back valid JSON? Here's the raw output: ```json {\"name\": \"Alice\", \"score\": 42, } ```","exampleUseCases":[{"title":"Fix LLM output before downstream processing","prompt":"Our language model just returned this malformed JSON with trailing commas and single quotes instead of double quotes — can you repair it so our downstream service doesn't crash? Here's the raw string: {'user': 'bob', 'score': 99, }"},{"title":"Strip markdown fences from structured output","prompt":"The LLM wrapped its JSON response in triple-backtick markdown fences again. Can you clean it up and give me back a valid JSON object? Raw output: ```json\\n{\"status\": \"ok\", \"count\": 5,}\\n```"},{"title":"Recover truncated agent response JSON","prompt":"Our agent pipeline timed out mid-response and we got a truncated JSON string like {\"results\": [{\"id\": 1, \"title\": \"foo\"}, {\"id\": 2 — can you repair and complete it as best you can deterministically?"}],"resultDescription":"A repaired, valid JSON object parsed from the input malformed string. Trailing commas, markdown fences, single quotes, and other common LLM output artifacts are corrected. The response schema is a generic JSON object reflecting the repaired structure.","failureModes":["Input JSON too severely truncated or corrupted to deterministically repair — returns error or best-effort partial result","Input string is empty or whitespace — validation error due to minLength:1 requirement","JSON structure is ambiguous after repair — deterministic rules may produce unexpected but valid output","Payment required (HTTP 402) if x402 micropayment header not included","Rate limiting or service unavailability causing timeout"],"whenToPreferThis":"Choose this endpoint when your multi-agent or LLM pipeline frequently produces malformed JSON (trailing commas, markdown code fences, single-quoted keys) that needs deterministic — not heuristic or model-based — repair before downstream processing. Ideal for production pipelines where reliability and reproducibility matter more than creative recovery. Prefer over ad-hoc regex hacks or re-prompting the LLM when you need consistent, fast, low-cost ($0.002/call) sanitization at scale.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:23:36.340Z","isFirstParty":false,"canonicalSlug":"hn-pulse-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-e04c99ac"}