# 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/json-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-ded1fe6a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5o0svBUjYqUAiosyiR_mW

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-ded1fe6a
```

Example prompt: This LLM response came back as broken JSON with trailing commas and markdown code fences — can you repair it so I can use it: ```{"name": "Alice", "age": 30,}```?

## When to prefer this

Choose this endpoint when you need deterministic, rule-based JSON repair (not probabilistic/LLM-based rewriting) for LLM outputs that suffer from known structural issues like trailing commas, markdown fences, single quotes, or truncation. Ideal for multi-agent pipelines where downstream steps require valid JSON and crashes are unacceptable. Prefer this over manual parsing or regex hacks when you want a dedicated, pay-per-call microservice that handles the full range of common LLM JSON malformations in one call.

## Known failure modes

- Input is so corrupted it cannot be deterministically repaired, returning an error or best-effort partial result
- Input is not JSON at all (plain text, binary), causing repair failure
- Extremely long truncated inputs may result in ambiguous completions
- Malformed nesting beyond repair heuristics may return unexpected structure

## 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/json-repair)

## Output

A repaired, valid JSON object that has been deterministically fixed — trailing commas removed, markdown fences stripped, single quotes normalized to double quotes, and truncated structures closed — ready for parsing by downstream agents or code.

## 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-ded1fe6a/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)