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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 x402-audit.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://x402-audit.agentdiet.dev/v1/malformed-json-healer)
Output
A repaired, valid JSON object that has been cleaned of common LLM-introduced errors such as trailing commas, markdown code fences, single quotes, and truncation artifacts — ready for downstream parsing without crashes.
Example use cases
Fix LLM pipeline JSON crashes
“My LLM just returned this malformed JSON with a trailing comma and it's crashing my pipeline — can you repair it? The raw string is: {"model": "gpt-4", "tokens": 1500,}”
Strip markdown fences from JSON output
“The agent returned JSON wrapped in markdown code fences and my downstream parser can't handle it — can you clean it up and return valid JSON? Here's the raw output: ```json
{"status": "ok", "results": [1, 2, 3]}
```”
Repair single-quoted JSON from LLM
“I got a JSON blob back from the model that uses single quotes instead of double quotes and it won't parse — can you fix it into valid JSON? The string is: {'user': 'bob', 'score': 42}”
Technical details
Endpoint
GEThttps://x402-audit.agentdiet.dev/v1/malformed-json-healer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline receives raw LLM-generated JSON that may contain trailing commas, markdown fences, single quotes, or truncation artifacts and you need a deterministic (not LLM-based) fix rather than asking another LLM to reformat it. Prefer this over manual regex hacks or prompting the LLM again when reliability and idempotency across thousands of pipeline calls matter.
Side effects
- JSON too severely malformed to deterministically repair (ambiguous structure)
- Empty or null raw_json input
- Payload exceeds length limits
- Non-JSON content passed as input (e.g. plain text or XML)
- Network or payment (x402) authorization failure
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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