# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from defi-yield.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://defi-yield.agentdiet.dev/v1/structured-output?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-e7126e1f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XsfRDyjjCtaX25xRIv6B1

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 defi-yield-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-e7126e1f
```

Example prompt: This JSON from my LLM has trailing commas and markdown fences and it's breaking my pipeline — can you fix it: ```{"name": "Alice", "score": 42,}```?

## When to prefer this

Choose this endpoint when your multi-agent pipeline receives LLM-generated JSON that contains common syntax errors like trailing commas, markdown code fences, single quotes, or truncation artifacts. It is deterministic (not probabilistic), making it reliable for production pipelines where consistency matters. Prefer it over general-purpose LLM re-prompting when you need fast, cheap, rule-based JSON cleanup without burning tokens.

## Known failure modes

- Input JSON is too severely corrupted or ambiguous to deterministically repair — returns error
- Input string is not JSON-like at all — returns validation error
- Truncation point is ambiguous, leading to uncertain repairs
- Minlength violation if empty string is submitted — returns schema validation 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://defi-yield.agentdiet.dev/v1/structured-output)

## Output

Returns a repaired, valid JSON object with all syntax errors corrected — trailing commas removed, markdown fences stripped, single quotes replaced with double quotes, and truncated structures closed — ready for downstream agent consumption.

## 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/defi-yield-agentdiet-dev-deterministic-a2a-broken-json-repair-schema-e7126e1f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)