# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from mcp-compiler.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

## Facts

- Endpoint: GET https://mcp-compiler.agentdiet.dev/v1/schema-repair?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: mcp-compiler.agentdiet.dev
- Website: https://mcp-compiler.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/mcp-compiler-agentdiet-dev-deterministic-a2a-broken-json-repair-f7cea650
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fAwF6E0Ff_pupSAwlQ8ZA

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 mcp-compiler-agentdiet-dev-deterministic-a2a-broken-json-repair-f7cea650
```

Example prompt: This JSON came back from the LLM with trailing commas and markdown fences and it's breaking my pipeline — can you repair it and give me valid JSON back? Here's the raw string: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when an AI agent or LLM pipeline produces structurally malformed JSON (trailing commas, markdown fences, single quotes, truncation) and you need a deterministic, rule-based fix rather than an LLM re-generation. Ideal for multi-agent orchestration layers where reliability and low latency matter more than probabilistic correction.

## Known failure modes

- JSON is too severely truncated or corrupted to deterministically repair — returns error or best-effort partial result
- Input string is not JSON at all (e.g. plain text, binary) — may return parse error
- Edge cases with deeply nested or extremely large JSON strings may hit query parameter length limits
- Network or service unavailability returns HTTP 5xx

## 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://mcp-compiler.agentdiet.dev/v1/schema-repair)

## Output

A repaired, valid JSON object where all malformations (trailing commas, markdown fences, single quotes, truncation) have been deterministically corrected, ready for immediate use in downstream pipeline 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/mcp-compiler-agentdiet-dev-deterministic-a2a-broken-json-repair-f7cea650/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-compiler.agentdiet.dev](https://www.zero.xyz/host/mcp-compiler.agentdiet.dev/llms.txt)