# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from shopify-spy.agentdiet.dev, paid per call via MPP, $0.002/call, status unknown (last checked 2026-10-23).

Repairs truncated or malformed LLM JSON outputs (trailing commas, markdown fences, single quotes) so multi-agent pipelines never crash

## Facts

- Endpoint: POST https://shopify-spy.agentdiet.dev/v1/llm-json-schema-healer?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-2a5faf7b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d_7tPHWGXrs1qBcJRHFBK

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 shopify-spy-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-2a5faf7b -d '<json body>'
```

Example prompt: This JSON string from the LLM is broken — it has trailing commas and markdown code fences around it. Can you fix it so it's valid JSON I can parse? Here it is: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when you need deterministic, rule-based JSON repair for LLM outputs in automated pipelines where reliability matters — especially when dealing with markdown-fenced responses, trailing commas, or single-quoted keys. Prefer this over manual parsing hacks or custom regex when operating in a multi-agent system that requires consistent, crash-free JSON handling.

## Known failure modes

- JSON too severely truncated or corrupt to deterministically repair — returns error indicating unrecoverable input
- Input string contains no parseable JSON structure at all — returns validation failure
- Ambiguous structure where multiple valid repairs are possible — may return best-guess repair or error

## 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://shopify-spy.agentdiet.dev/v1/llm-json-schema-healer)

## Output

A repaired, valid JSON object that has been cleaned of common LLM-introduced malformations including trailing commas, markdown code fences, single quotes, and truncation artifacts — ready for programmatic parsing without 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/shopify-spy-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-2a5faf7b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)