# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from json-repair.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://json-repair.agentdiet.dev/v1?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: json-repair.agentdiet.dev
- Website: https://json-repair.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/json-repair-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-83ea39cb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ndncVtZ_qcago4-dCzFem

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 json-repair-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-83ea39cb
```

Example prompt: Can you fix this broken JSON that my LLM just generated — it has trailing commas, single quotes, and a markdown code fence around it: ```{'name': 'Alice', 'age': 30,}```?

## When to prefer this

Choose this endpoint when your multi-agent pipeline receives LLM-generated JSON that fails standard JSON.parse — especially for trailing commas, single quotes, markdown fences, or truncation artifacts. Prefer it over custom regex heuristics when you need deterministic, consistent repair behavior at scale across many agents.

## Known failure modes

- Input is so severely malformed that no valid JSON can be inferred — may return a best-effort partial object
- Input is an empty string or pure non-JSON content — returns error or empty object
- Ambiguous truncation point leads to incorrect inference of missing values
- Payment (x402) failure or insufficient funds blocks the request

## 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://json-repair.agentdiet.dev/v1)

## Output

Returns a repaired, valid JSON object reconstructed from the malformed or truncated input, with issues like trailing commas, markdown code fences, single quotes, and missing brackets 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/json-repair-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-83ea39cb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from json-repair.agentdiet.dev](https://www.zero.xyz/host/json-repair.agentdiet.dev/llms.txt)