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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) 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/json-normalizer)
Output
A repaired, valid JSON object with all common malformations fixed — trailing commas removed, markdown fences stripped, single quotes converted to double quotes, and truncated structures closed — ready for downstream parsing.
Example use cases
Fix LLM output in agent pipeline
“The AI agent in my pipeline returned this malformed JSON with a trailing comma and single quotes — fix it so the downstream step doesn't crash: {name: 'Bob', value: 99,}”
Strip markdown fences from JSON response
“My model wrapped its JSON output in triple backticks and now my parser fails. Can you clean this up and return valid JSON: ```json {"status": "ok", "count": 5,} ```”
Repair truncated JSON from context overflow
“My LLM got cut off mid-response and the JSON is incomplete — can you repair this truncated JSON and return the best valid version you can reconstruct: {"items": [{"id": 1, "label": "foo"}, {"id": 2”
Technical details
Endpoint
GEThttps://onchain-risk.agentdiet.dev/v1/json-normalizer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline receives LLM-generated JSON that fails standard parsing due to common LLM artifacts (trailing commas, markdown fences, single quotes, truncation). Ideal for deterministic, rule-based repair rather than AI-based regeneration — ensuring reproducibility and speed without additional LLM calls.
Side effects
- Input JSON too severely corrupted to deterministically repair — returns error indicating unrecoverable structure
- Empty or missing raw_json parameter — returns validation error
- Input exceeds length limits — may return truncation or size error
- Ambiguous truncation point — repaired output may not match original intent
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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