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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 onchain-risk.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) into valid JSON 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://onchain-risk.agentdiet.dev/v1/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 truncation corrected where possible, returned as a structured JSON response.
Example use cases
Fix LLM output before downstream agent
“My language model returned this JSON with a trailing comma and it's breaking my downstream agent — can you fix it? The raw string is: {"result": "success", "items": [1, 2, 3,]}”
Strip markdown fences from agent response
“The agent wrapped its JSON in triple backticks and my parser is choking on it — please strip the markdown fences and give me clean JSON from this string: ```json
{"status": "ok", "value": 99}
```”
Recover single-quoted JSON from pipeline crash
“My pipeline crashed because the model used single quotes instead of double quotes in its JSON output — here's the broken string, please repair it: {'user': 'bob', 'active': true}”
Technical details
Endpoint
GEThttps://onchain-risk.agentdiet.dev/v1/repair?utm_source=zero.xyzWhen to prefer
Use this endpoint when an LLM or agent in your pipeline produces malformed JSON that would otherwise crash downstream consumers — especially when dealing with trailing commas, markdown code fences, single-quoted keys/values, or minor truncation. Prefer this over writing custom regex or ad-hoc fixers when you need deterministic, reliable repair in a production multi-agent workflow.
Side effects
- Input JSON too severely truncated to reconstruct — returns error indicating unrecoverable structure
- Input string is not JSON-like at all — returns parsing error
- Empty raw_json parameter — returns validation error for missing required field
- Network timeout or service unavailability — returns HTTP 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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