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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 cve-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) 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://cve-intel.agentdiet.dev/v1/json-validator)
Output
Returns a JSON object containing the repaired, valid JSON string that has been cleaned of markdown fences, trailing commas, single-quoted keys, and other common LLM-induced malformations — ready to be parsed and passed to downstream pipeline steps.
Example use cases
Fix LLM output in agent pipeline
“My agent just got this JSON back from a language model and the pipeline crashed because it has trailing commas and markdown fences. Can you repair it so I can pass it downstream? Here's the raw output: ```json
{"user": "bob", "score": 42,}
```”
Sanitize single-quoted JSON keys
“I have a JSON string where all the keys are wrapped in single quotes instead of double quotes — it was generated by an LLM and my parser rejects it. Can you fix this for me: {'product': 'widget', 'price': 9.99}”
Recover truncated JSON from streaming LLM
“My streaming LLM response got cut off mid-output and the JSON is incomplete — it stops at {"items": [{"id": 1, "name": "foo". Can you repair and complete this truncated JSON so I can use it?”
Technical details
Endpoint
GEThttps://cve-intel.agentdiet.dev/v1/json-validator?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need deterministic, rule-based JSON repair for LLM outputs — particularly when dealing with trailing commas, markdown code fences, single-quoted keys, or truncated strings in a multi-agent or automated pipeline. Prefer this over manual string manipulation when reliability and consistency matter at scale, and over LLM-based repair when you need fast, predictable, non-generative correction.
Side effects
- JSON is too severely truncated to reconstruct meaningfully — returns error or best-effort partial repair
- Input is not recognizably JSON at all — endpoint may return error or pass-through
- Ambiguous repair cases where multiple valid interpretations exist may produce unexpected output
- Payment required error (HTTP 402) if x402 micropayment not included
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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