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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 token-intel.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://token-intel.agentdiet.dev/v1/schema-repair)
Output
A repaired, valid JSON object reconstructed from the malformed input — with trailing commas removed, markdown fences stripped, single quotes converted to double quotes, and truncated structures closed — ready to be parsed by any standard JSON parser in a downstream agent step.
Example use cases
Fix LLM pipeline JSON crash
“My agent pipeline just crashed because the upstream LLM returned JSON with trailing commas and single quotes — can you repair this string so it's valid JSON I can pass downstream: {name: 'Bob', scores: [1, 2, 3,]}?”
Strip markdown fences from agent output
“The model wrapped its JSON response in triple backticks and now my parser is failing — take this markdown-fenced blob and give me back clean, parseable JSON: ```json
{"status": "ok", "value": 42}
```”
Recover truncated JSON from LLM
“The LLM hit its token limit mid-response and the JSON got cut off — here's the truncated string: {"items": [{"id": 1, "title": "report"} — can you repair it into valid JSON?”
Technical details
Endpoint
GEThttps://token-intel.agentdiet.dev/v1/schema-repair?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent or multi-agent pipeline receives LLM-generated JSON that fails to parse due to common issues like trailing commas, markdown code fences, single-quoted keys/values, or mid-stream truncation. It is particularly valuable as a middleware step between LLM output and any downstream JSON consumer to prevent pipeline crashes. Prefer it over writing custom regex or heuristic fixers when you need a deterministic, hosted repair service that handles a broad class of JSON malformations in a single call.
Side effects
- Input JSON is so severely truncated that the structure cannot be inferred — returns an error or best-effort partial repair
- Input contains non-JSON content entirely (e.g. plain prose) — may return an error indicating no JSON structure detected
- Ambiguous repair paths where multiple valid completions exist — may choose one deterministically but could be semantically wrong
- Very large JSON strings may hit query parameter length limits since the endpoint uses GET with a query param
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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