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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, 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://whale-momentum.agentdiet.dev/v1/schema-repair)
Output
A repaired, valid JSON object that has been sanitized of common LLM output artifacts including trailing commas, markdown fences, single-quote delimiters, and truncation errors — ready to be parsed by downstream pipeline steps.
Example use cases
Fix LLM pipeline JSON crash
“My agent just returned this mangled JSON with trailing commas and it's crashing my pipeline — please repair it so it's valid: `{"status": "ok", "items": [1, 2, 3,],}`”
Strip markdown fences from agent output
“The LLM wrapped its output in triple-backtick markdown fences and added single quotes instead of double quotes — can you clean it up and give me valid JSON? Here it is: ```{'user': 'bob', 'active': true}```”
Recover truncated JSON response
“My model got cut off mid-response and I ended up with truncated JSON — something like `{"results": [{"id": 1, "name": "foo"` — can you deterministically repair it so I can use it?”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/schema-repair?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent or LLM pipeline frequently receives malformed JSON from language model outputs — especially outputs with trailing commas, markdown code fences, single-quote delimiters, or truncation artifacts. It is preferable over generic JSON parsers when you need deterministic, rule-based repair rather than probabilistic inference, and when pipeline reliability (no crashes) is the primary concern.
Side effects
- Input JSON is so severely malformed that deterministic repair is impossible — returns error indicating unrecoverable structure
- Empty or whitespace-only raw_json input — returns validation error
- Input exceeds character or size limits — returns rejection error
- Ambiguous structure where multiple repair interpretations exist — may return best-guess result with lower confidence
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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