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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 whale-momentum.agentdiet.dev, paid per call via MPP, $0.002/call, status unknown (last checked 2026-10-21).
Repairs malformed, truncated, or markdown-wrapped LLM JSON outputs (trailing commas, single quotes, markdown fences) so multi-agent pipelines can process them without crashing.
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://whale-momentum.agentdiet.dev/v1/json-normalizer)
Output
A repaired, valid JSON object derived from the malformed input string. The response contains the corrected JSON with all syntax issues resolved — trailing commas removed, markdown fences stripped, single quotes converted to double quotes, and truncated structures closed.
Example use cases
Fix LLM pipeline JSON crash
“My agent pipeline just crashed because the upstream LLM returned malformed JSON with a trailing comma and no closing brace. Can you repair this string so I can continue processing: '{"result": "ok", "score": 0.95,'?”
Strip markdown fences from JSON
“The model wrapped its JSON response in triple-backtick markdown fences and now my parser is failing. Can you clean up this raw string and give me valid JSON back: '```json\n{"status": "success"}\n```'?”
Normalize single-quoted JSON output
“I got this JSON-like output from an LLM that used single quotes instead of double quotes: "{'user': 'bob', 'active': true}" — can you normalize it into proper JSON so I can feed it into the next step?”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/json-normalizer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an LLM or agent in your pipeline produces malformed JSON (trailing commas, markdown fences, single quotes, truncated structures) and you need a fast, deterministic fix rather than asking the LLM to retry. Ideal for multi-agent workflows where reliability and cost matter — at $0.002 per call it's cheaper than an LLM retry. Prefer this over regex-based hacks or custom parsers when you need a hosted, drop-in solution that handles a variety of common LLM JSON failure modes.
Side effects
- Input is so severely malformed that deterministic repair is impossible — returns error indicating unrecoverable JSON
- Input string is empty or missing — returns 400-level error
- Input contains non-JSON content (e.g. plain text prose) that cannot be coerced into valid JSON
- Payment not included or insufficient — returns HTTP 402 requiring x402 USDC payment
- Network timeout or service unavailable — returns 5xx error
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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