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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 hn-pulse.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 never crash on bad JSON.
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://hn-pulse.agentdiet.dev/v1/repair)
Output
A repaired, valid JSON object that has been cleaned of common LLM-induced malformations such as trailing commas, single quotes, markdown code fences, and truncation artifacts, ready to be used downstream in an agent pipeline without further sanitization.
Example use cases
Fix LLM output before pipeline step
“The model returned this JSON with a trailing comma and single quotes and now my pipeline is crashing — fix this for me: {'user': 'bob', 'items': ['a', 'b',]}”
Strip markdown fences from agent response
“My agent wrapped its JSON output in triple backticks and now the next step can't parse it — can you clean it up and give me valid JSON? Here's what it returned: ```json
{"status": "ok", "count": 5}
```”
Recover truncated JSON from interrupted generation
“The model got cut off mid-response and I ended up with this truncated JSON: {"results": [{"id": 1, "name": "foo"}, {"id": 2 — can you repair it so I can use it?”
Technical details
Endpoint
GEThttps://hn-pulse.agentdiet.dev/v1/repair?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline receives raw LLM-generated JSON that is not guaranteed to be valid — especially when outputs may be truncated, wrapped in markdown code fences, use single quotes, or contain trailing commas. Prefer this over custom regex sanitization when you need a deterministic, consistent repair pass before passing JSON to a downstream agent or schema validator.
Side effects
- Input JSON is so severely malformed that deterministic repair is impossible — returns error
- Input string is empty or missing raw_json parameter — returns 400 validation error
- JSON is structurally ambiguous after truncation and cannot be unambiguously completed — may return partial repair or error
- Payment not processed or x402 header missing — returns 402 Payment Required
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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