# 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-repair?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-8d214580
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LJo2PJUtSOqqgIWyphtJc

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-8d214580 -d '<json body>'
```

Example prompt: This JSON string from the LLM has trailing commas and markdown code fences wrapped around it — can you repair it so it parses cleanly? Here it is: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when you have a multi-agent pipeline where an upstream LLM or scraper produces JSON that fails to parse due to common formatting errors like trailing commas, markdown code fences, single quotes, or truncation. It is specifically designed for deterministic (non-AI) repair, making it fast, predictable, and safe for automated pipelines where consistency matters more than creative interpretation.

## Known failure modes

- Input is so severely truncated that structural intent cannot be inferred — returns error or best-effort partial repair
- Input is not JSON-like at all (e.g. plain prose) — may return error or unexpected output
- Ambiguous repair cases where multiple valid interpretations exist — deterministic repair may choose one arbitrarily
- Payment not processed (x402) — request rejected before repair attempt
- Empty raw_json field — validation error returned

## 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-repair)

## Output

A repaired, valid JSON object that has been cleaned of trailing commas, markdown fences, single quotes, and other common malformations produced by LLMs or scrapers — ready to be parsed without errors by downstream agent steps.

## 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-8d214580/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)