{"uid":"cap_c2Djz9pXzWhg7eq8tm8De","slug":"arxiv-digest-agentdiet-dev-deterministic-a2a-broken-json-repair-1c06c6e8","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://arxiv-digest.agentdiet.dev/v1/json-fix)","url":"https://arxiv-digest.agentdiet.dev/v1/json-fix?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_d7BEFkvM2t4JKCnGug8N6","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":"arxiv-digest.agentdiet.dev","brandSlug":"arxiv-digest-agentdiet-dev-mpp","brandBaseUrl":"https://arxiv-digest.agentdiet.dev","brandDocsUrl":null,"whatItDoes":"Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, single quotes) so multi-agent pipelines never crash","exampleAgentPrompt":"This JSON from the LLM came back malformed — it has trailing commas, single quotes around keys, and a markdown code fence wrapping it. Can you fix it so it parses cleanly: ```{'name': 'Alice', 'age': 30,}```?","exampleUseCases":[{"title":"LLM pipeline crash prevention","prompt":"The language model just returned JSON wrapped in a markdown code block with trailing commas and it's breaking my pipeline — can you repair it and give me back valid, parseable JSON?"},{"title":"Single-quoted JSON key repair","prompt":"I got this JSON back from a model but it used single quotes instead of double quotes for all the keys and values. Fix it so it's valid JSON I can actually use: {'user': 'bob', 'score': 42}"},{"title":"Truncated JSON recovery","prompt":"My LLM output got cut off mid-generation and the JSON is incomplete — it ends abruptly without closing braces. Can you deterministically repair and close it so I can extract the data?"}],"resultDescription":"A repaired, valid JSON object reconstructed from the malformed input, with issues like trailing commas, markdown fences, single quotes, and truncation corrected — ready for downstream parsing without errors.","failureModes":["Input is so severely malformed that deterministic repair is impossible, returning an error","Empty or whitespace-only raw_json input fails schema validation (minLength:1 required)","JSON that is syntactically ambiguous beyond repair may return an incomplete or best-effort result","Payment via x402 not completed results in HTTP 402 response before processing","Rate limiting or server errors may return 5xx responses"],"whenToPreferThis":"Choose this endpoint when you need deterministic, rule-based JSON repair for LLM outputs rather than probabilistic regeneration. Ideal for multi-agent pipelines where JSON parsing failures cause crashes and you need a lightweight, fast fix layer between LLM output and downstream processing. Prefer this over asking the LLM to retry (which wastes tokens and time) or writing custom regex parsers.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T07:24:13.823Z","isFirstParty":false,"canonicalSlug":"arxiv-digest-agentdiet-dev-deterministic-a2a-broken-json-repair-859b9028"}