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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 mcp-security.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://mcp-security.agentdiet.dev/v1/malformed-json-healer)
Output
A repaired, syntactically valid JSON object derived from the malformed input. The response contains the corrected JSON with issues like trailing commas, markdown code fences, single-quoted strings, and truncated structures resolved, making it safe to parse in downstream agent pipelines.
Example use cases
LLM output pipeline repair
“My LLM just returned this JSON with trailing commas and it's crashing my pipeline — can you repair it so I can keep processing? Here's the broken string: {"results": ["alpha", "beta",], "count": 2,}”
Markdown-fenced JSON cleanup
“The AI returned its response wrapped in markdown code fences like ```json ... ``` and my downstream parser can't handle it — strip the fences and fix any other JSON issues in this string: ```json
{"status": 'ok', "data": null}
```”
Truncated agent response recovery
“My agent's JSON got cut off mid-response and now it's invalid — try to repair this truncated JSON so I can extract the data from it: {"users": [{"id": 1, "name": "Bob"}, {"id": 2, "name":”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/malformed-json-healer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline receives LLM-generated JSON that fails standard JSON.parse due to common LLM formatting errors — trailing commas, markdown fences, single quotes, or truncation. It is purpose-built for deterministic repair of AI output artifacts rather than general-purpose JSON linting. Prefer it over manual regex fixes or client-side libraries when you need a reliable, hosted, pay-per-call solution in an agentic workflow that must handle malformed outputs gracefully without crashing.
Side effects
- Input is so severely truncated that meaningful repair is impossible — returns error or best-effort partial result
- Input contains non-JSON content entirely unrelated to JSON structure — may return error
- Extremely large malformed strings may hit query parameter size limits since raw_json is passed as a GET query parameter
- Ambiguous repair cases where multiple valid JSON interpretations exist may produce unexpected output
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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