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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 defi-yield.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://defi-yield.agentdiet.dev/v1/malformed-json-healer)
Output
A repaired, valid JSON object with syntax errors corrected — trailing commas removed, markdown fences stripped, single quotes normalized to double quotes, and truncated structures closed — ready for downstream parsing and use in multi-agent pipelines.
Example use cases
LLM output JSON repair in pipeline
“My language model keeps returning JSON wrapped in markdown code fences with trailing commas and it's crashing my downstream agent — can you clean and repair this JSON for me: ```json {"status": "ok", "items": [1, 2, 3,],} ```”
Fix single-quoted JSON from AI agent
“I got this JSON back from an AI agent but it uses single quotes instead of double quotes and my parser won't accept it — can you fix it? Here it is: {'user': 'bob', 'score': 42}”
Recover truncated JSON response
“My LLM returned a truncated JSON object that got cut off mid-string — it's missing closing brackets and it won't parse — can you repair this so I get valid JSON back: {"report": {"summary": "The quarterly results show strong grow”
Technical details
Endpoint
GEThttps://defi-yield.agentdiet.dev/v1/malformed-json-healer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent or LLM pipeline regularly produces syntactically invalid JSON — especially outputs with trailing commas, markdown code fences, single quotes, or truncation artifacts — and you need a fast, deterministic fix rather than asking another LLM to reformat it. Particularly useful in production pipelines where crashes from malformed JSON are costly and you need a reliable, cheap ($0.002/call) repair step.
Side effects
- Input is so severely malformed that deterministic repair is not possible — returns error indicating unrecoverable JSON
- Empty or whitespace-only raw_json input — returns validation error
- Input is not JSON at all (e.g. plain prose) — may return error or unpredictable output
- Extremely large JSON payloads may time out or be rejected
- Network or payment (x402) failures returning HTTP 402 or 5xx
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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