# 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, truncation) into valid JSON for use in multi-agent pipelines.

## Facts

- Endpoint: GET https://mcp-compiler.agentdiet.dev/v1/malformed-json-healer?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-b36a3126
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mAb91FoXUBM6eIVBUp34J

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-b36a3126
```

Example prompt: This JSON from my LLM just crashed my pipeline — can you fix it? It has trailing commas and markdown fences wrapping it: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when an AI agent or LLM pipeline receives JSON output that fails to parse and you need a deterministic, reliable fix rather than a probabilistic re-prompt. Ideal for production multi-agent workflows where retrying the LLM is expensive or unreliable, and you need a fast, cheap ($0.002/call) programmatic repair step.

## Known failure modes

- JSON is too severely truncated or corrupted to deterministically recover — returns error or best-effort partial result
- Input is not JSON-like at all (plain text, binary) — repair may fail or return unexpected output
- Ambiguous structure where multiple valid repairs are possible — repair picks one deterministically but may not match original intent
- Network or payment (x402) failure — call does not complete

## 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/malformed-json-healer)

## Output

Returns a JSON object containing the repaired, valid JSON output — ready to be parsed and passed downstream in an agent pipeline without syntax errors.

## 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-b36a3126/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)