# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from workflows.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://workflows.agentdiet.dev/v1/repair?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-3628d82f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6ppNlz7uA56suSHJaeCP2

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 workflows-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-3628d82f
```

Example prompt: The LLM just returned this broken JSON with trailing commas and a markdown code fence — can you fix it so I can pass it to the next step: ```json {"name": "Alice", "age": 30,} ```

## When to prefer this

Choose this endpoint when an AI agent pipeline receives unparseable JSON from an LLM — especially outputs with trailing commas, single-quoted keys/values, markdown code fences, or mid-sequence truncation. Prefer this over custom regex heuristics when you need deterministic, reliable repair across a wide range of malformation types without writing fragile parsing code.

## Known failure modes

- Input so severely truncated that structure cannot be inferred — returns error or best-effort partial repair
- Non-JSON input (e.g. plain text, binary) — may return error indicating input is not repairable JSON
- Ambiguous structure where multiple valid repairs are possible — may return only one deterministic interpretation
- Network or payment-related failures (x402 payment required) — returns 402 status

## 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://workflows.agentdiet.dev/v1/repair)

## Output

A JSON object containing the repaired, valid JSON — with trailing commas removed, markdown fences stripped, single quotes converted to double quotes, and any truncation-induced syntax errors deterministically fixed, ready for downstream parsing.

## 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/workflows-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-3628d82f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)