# Deterministic A2A Broken-JSON Repair & Schema Validator

> Deterministic A2A Broken-JSON Repair & Schema Validator is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.002/call, status unknown (last checked 2026-10-21).

Repairs truncated, malformed, or markdown-wrapped JSON strings from LLM outputs so multi-agent pipelines can continue processing without crashes.

## Facts

- Endpoint: GET https://alpha-stream.agentdiet.dev/v1/repair?utm_source=zero.xyz
- Price: $0.002/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-deterministic-a2a-broken-json-repair-8a0f4dea
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2vIXpkk77euJDoi-NxeV3

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 alpha-stream-agentdiet-dev-deterministic-a2a-broken-json-repair-8a0f4dea
```

Example prompt: My LLM just returned this broken JSON with trailing commas and markdown fences — can you clean it up so it parses correctly: ```{"name": "Alice", "age": 30,}```?

## When to prefer this

Choose this endpoint when your multi-agent or LLM pipeline frequently receives malformed JSON — especially outputs with trailing commas, markdown code fences, single quotes, or truncation — and you need a deterministic, reliable fix rather than a probabilistic re-prompt. Ideal for production pipelines where crashes are costly and re-calling the LLM is slow or expensive.

## Known failure modes

- Input JSON is too severely truncated or corrupted to deterministically repair — returns error indicating unrecoverable structure
- Input string is empty or missing — returns 400-style validation error
- JSON is structurally ambiguous after repair — may return best-effort result that differs from original intent
- Rate limiting or payment failure via x402 micropayment protocol

## 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://alpha-stream.agentdiet.dev/v1/repair)

## Output

A repaired, standards-compliant JSON object reconstructed from the malformed input, with issues like trailing commas, markdown fences, single quotes, and truncation corrected so it can be parsed 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/alpha-stream-agentdiet-dev-deterministic-a2a-broken-json-repair-8a0f4dea/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)