# 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 2026-10-23).

Repairs truncated or malformed LLM-generated JSON (trailing commas, markdown fences, single quotes, truncation) so multi-agent pipelines can proceed without crashing.

## Facts

- Endpoint: POST https://defi-yield.agentdiet.dev/v1/json-normalizer?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- 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-3c892560
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UP0XJPPrMHkisZCDGlImc

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-3c892560 -d '<json body>'
```

Example prompt: This LLM response came back as broken JSON with trailing commas, markdown code fences, and single quotes — can you repair it into valid JSON so I can pass it to the next step in my pipeline? Here's the raw string: ```json {name: 'Alice', scores: [1, 2, 3,], active: true,} ```

## When to prefer this

Choose this endpoint when your multi-agent or LLM pipeline regularly produces malformed JSON that causes downstream crashes — especially when you need deterministic, rule-based repair rather than a secondary LLM call to reformat the output. It is particularly valuable when outputs contain predictable LLM artifacts like markdown fences, trailing commas, or single-quoted keys, and you need a cheap, fast, idempotent fix per call.

## Known failure modes

- Input string is so severely malformed it cannot be deterministically recovered — returns an error indicating irrecoverable structure
- Input is not JSON-like at all (e.g. plain prose) — may return a parsing failure or empty result
- Payment not provided or invalid — HTTP 402 response blocking execution
- Missing required raw_json field — HTTP 400 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/json-normalizer)

## Output

A JSON object containing the repaired, normalized, and schema-valid version of the input string — ready to be parsed or forwarded to the next pipeline stage. Typical fields include the corrected JSON value and potentially a status or repair summary.

## 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-3c892560/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)