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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 alpha-stream.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://alpha-stream.agentdiet.dev/v1/json-fix)
Output
Returns a JSON object containing the repaired, valid JSON — with trailing commas removed, markdown fences stripped, single quotes converted to double quotes, and truncated structures closed — ready for downstream parsing without errors.
Example use cases
LLM pipeline JSON crash recovery
“My AI pipeline just got back this malformed JSON from the model and it's crashing my parser — it has trailing commas and is wrapped in markdown fences. Can you fix this raw string so it's valid JSON I can actually use: ```json {"user": "bob", "score": 42,}```”
Multi-agent data handoff repair
“One of my agents passed a JSON payload to the next stage but it used single quotes and got truncated mid-string, so the downstream agent can't read it. Fix this broken JSON for me: {'task': 'summarize', 'input': 'hello world'”
Automated QA for LLM output validation
“I'm building a QA check for all JSON outputs coming out of my language model before they hit the database. Run this potentially malformed JSON through your repair and validation service and return the corrected version: {"items": [1, 2, 3,], "status": 'ok'}”
Technical details
Endpoint
GEThttps://alpha-stream.agentdiet.dev/v1/json-fix?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your multi-agent pipeline or LLM workflow produces JSON that fails standard parsing due to common LLM output artifacts like trailing commas, markdown code fences, or single quotes. It is especially suited for deterministic, reproducible repair (no AI hallucination in the fix) and integrates natively with x402 micropayment and MCP/A2A protocols.
Side effects
- JSON is so severely malformed it cannot be deterministically repaired — returns error
- Input string is empty or not JSON-like at all — returns validation error
- Truncation is too deep to infer closing structure — may return partial repair with warning
- Rate limiting or payment failure via x402 — 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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