# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from serp-extract.agentdiet.dev, paid per call via MPP, $0.002/call, status unknown (last checked 2026-10-23).

Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, single quotes) so multi-agent pipelines never crash

## Facts

- Endpoint: POST https://serp-extract.agentdiet.dev/v1/malformed-json-healer?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: serp-extract.agentdiet.dev
- Website: https://serp-extract.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/serp-extract-agentdiet-dev-deterministic-a2a-broken-json-repair-716d0868
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T-7ugmqcjPQaAzXNn82RS

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability serp-extract-agentdiet-dev-deterministic-a2a-broken-json-repair-716d0868 -d '<json body>'
```

Example prompt: This JSON from my LLM output is broken — it has trailing commas and markdown fences around it — can you repair it and give me back valid, parseable JSON? Here's the raw string: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when your multi-agent pipeline receives LLM-generated JSON that fails standard parsing due to common syntax errors like trailing commas, markdown code fences, single-quoted keys, or truncated output. It is specifically designed for deterministic repair of AI-generated JSON rather than general data transformation, making it ideal for fault-tolerant agent workflows where downstream steps require strictly valid JSON.

## Known failure modes

- Input is so severely malformed that repair is not deterministically possible — returns error indicating unrecoverable JSON
- Empty or null raw_json field — returns validation error
- Input is not JSON at all (e.g. plain text, binary) — returns parse failure
- Idempotency-Key collision with differing payloads — may return cached prior result

## 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://serp-extract.agentdiet.dev/v1/malformed-json-healer)

## Output

Returns a repaired, schema-valid JSON object derived from the malformed input string, with all syntax errors (trailing commas, markdown fences, single quotes, truncation) corrected so it can be parsed by standard JSON parsers.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "raw_json"
 ],
 "properties": {
  "raw_json": {
   "type": "string",
   "minLength": 1,
   "description": "Malformed, truncated, or markdown-wrapped JSON string to deterministically repair"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp-extract-agentdiet-dev-deterministic-a2a-broken-json-repair-716d0868/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract.agentdiet.dev](https://www.zero.xyz/host/serp-extract.agentdiet.dev/llms.txt)