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Deterministic A2A Broken-JSON Repair & Schema Validator
Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from json-repair.agentdiet.dev, paid per call via MPP, $0.002/call, status unknown (last checked 2026-10-21).
Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, single quotes) so multi-agent pipelines never crash
Price / call$0.002
Success—
StatusUnknown
How this service works
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://json-repair.agentdiet.dev/paid)
Output
A repaired, valid JSON object reconstructed from the malformed input, with issues like trailing commas, markdown fences, single quotes, and truncation resolved deterministically
Example use cases
Fixing LLM output in agent pipeline
“My language model returned this JSON but it has a trailing comma and single quotes instead of double quotes — fix it so the next agent in my pipeline doesn't crash: {'user': 'bob', 'score': 42,}”
Stripping markdown fences from JSON response
“The AI wrapped its JSON answer in markdown code fences like ```json ... ``` and now my parser is failing — can you strip the fences and give me clean, valid JSON?”
Recovering truncated JSON from streaming response
“I got a truncated JSON response from a streaming LLM call that cut off mid-string — here it is: {"items": ["apple", "banana", "che — can you repair it into valid JSON?”
Technical details
Endpoint
GEThttps://json-repair.agentdiet.dev/paid?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline receives JSON from an LLM and needs deterministic, rule-based repair (not probabilistic rewriting) before passing it downstream. Ideal when you need to handle common LLM formatting artifacts like trailing commas, markdown code fences, and single quotes in a predictable, non-lossy way. Prefer this over custom parsing logic when you need a reliable, pay-per-call hosted solution without managing your own JSON repair library.
Side effects
- Input is so severely malformed that no valid JSON structure can be inferred — returns error or best-effort partial object
- Input is empty or whitespace — validation fails with missing required field error
- JSON is deeply nested and truncated — repair may make assumptions about missing closing brackets that differ from original intent
- Payment not completed via x402 — returns HTTP 402 requiring payment before processing
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| raw_jsonrequired | string | Malformed, truncated, or markdown-wrapped JSON string to deterministically repair |
Output
Schema · Response
{
"type": "object"
}Reviews
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