# 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/json-normalizer?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-fe11b7d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VEMP-HKDlKPDzMjaJGzSh

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-fe11b7d0 -d '<json body>'
```

Example prompt: This JSON string came out of my LLM and won't parse — it has trailing commas and markdown code fences. Can you repair it and give me back valid JSON? Here it is: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when your multi-agent pipeline receives raw LLM output that may contain common JSON formatting errors such as trailing commas, markdown code fences, single-quoted strings, or token-limit truncation. It is preferable to a general-purpose JSON parser when you cannot guarantee clean LLM output, and better than writing custom regex repair logic inline. Use it as a hardening layer between any LLM output stage and a downstream JSON consumer.

## Known failure modes

- Input is so severely truncated or corrupted that no valid repair is possible — returns error or best-effort partial object
- Input is not JSON-like at all (e.g. plain prose) — returns validation error
- Payment/402 flow fails if x402 credentials are not properly configured
- Network timeout if upstream service is unavailable

## 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/json-normalizer)

## Output

A repaired, valid JSON object parsed from the input malformed string, with common issues such as trailing commas, markdown code fences, single-quoted keys/values, and truncation corrected deterministically.

## 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-fe11b7d0/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)