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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 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 don't 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://agentdiet.dev/v1/repair)
Output
A JSON object containing the repaired, syntactically valid version of the input. The malformed input is cleaned of issues such as trailing commas, markdown fences, single quotes, and truncation artifacts, returning a parseable JSON structure the agent can immediately use.
Example use cases
Fixing LLM output before downstream processing
“My language model just returned this JSON with trailing commas and backtick fences and it's breaking my pipeline — can you repair it into valid JSON? Here it is: ```json {'user': 'bob', 'score': 42,}```”
Recovering truncated agent API response
“My agent got a truncated JSON response that cuts off mid-string — can you repair this broken JSON so I can continue processing it? The raw string is: {"items": [{"id": 1, "name": "widget", "price":”
Sanitizing single-quoted JSON from code generation
“My code generator produced this JSON using single quotes instead of double quotes and it won't parse — please fix it into valid JSON: {'product': 'laptop', 'qty': 3, 'available': true}”
Technical details
Endpoint
GEThttps://agentdiet.dev/v1/repair?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent or multi-agent pipeline receives syntactically broken JSON from an LLM output stage — especially when the issues are common patterns like trailing commas, markdown code fences wrapping the JSON, single-quoted keys/values, or truncated strings. It is deterministic (not heuristic or ML-based), making it predictable and suitable for automated pipelines where consistency matters. Prefer this over writing custom regex fixes when you need reliable, repeatable JSON repair without maintaining your own parsing logic.
Side effects
- Input JSON too severely malformed or truncated to infer correct structure — may return error or best-effort partial repair
- Empty or null raw_json input triggers validation error
- Non-JSON content (plain text, binary) passed as input returns parse failure
- Ambiguous truncation point where multiple valid completions exist — result may not match original intent
- Rate-limiting or payment failure (x402) if quota exceeded
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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