# 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 2026-10-21).

Repairs malformed, truncated, or markdown-wrapped JSON strings (trailing commas, single quotes, fences) so multi-agent pipelines can safely parse LLM outputs without crashing.

## Facts

- Endpoint: GET https://shopify-spy.agentdiet.dev/v1/schema-repair?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- 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-cbdd11bf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sbIk8HyEpf-eDDMXK_BAt

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-cbdd11bf
```

Example prompt: This JSON came back from the LLM with trailing commas and markdown fences and it's crashing my pipeline — can you repair it so it's valid: ```{"name": "Alice", "age": 30,}```

## When to prefer this

Choose this endpoint when your multi-agent or LLM pipeline is receiving malformed, truncated, or markdown-wrapped JSON that needs deterministic (rule-based, not AI-generated) repair before downstream parsing. Ideal when you need fast, predictable JSON sanitization without relying on another LLM call to fix the output.

## Known failure modes

- Input is so severely malformed that deterministic repair is not possible — returns error or partial result
- JSON is valid already — may return as-is or with minimal processing
- Very long truncated strings may be unrecoverable if too much context is missing
- Network timeout or payment (x402) authentication failure returns 402 or 5xx

## 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/schema-repair)

## Output

Returns a repaired, valid JSON object parsed from the originally malformed or truncated input string, with common LLM-output errors (trailing commas, markdown fences, single quotes, truncation) 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/shopify-spy-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-cbdd11bf/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)