# Agent Release Gate – Structured JSON Extraction

> Agent Release Gate – Structured JSON Extraction is a paid API for AI agents from agentcash-claude-seller-production.up.railway.app, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-31).

Extracts specified fields as structured JSON from a given text input using Claude, returning only the requested key-value pairs.

## Facts

- Endpoint: POST https://agentcash-claude-seller-production.up.railway.app/api/extract?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-release-gate-structured-json-extraction-46116dd7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8FPVxqNTgkHCMt5EY_Hfy

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 agent-release-gate-structured-json-extraction-46116dd7 -d '<json body>'
```

Example prompt: Pull the following fields from this text — company name, founding year, and headquarters city — and return them as structured JSON: 'Acme Corp was founded in 1987 and is headquartered in Austin, Texas, serving clients worldwide.'

## When to prefer this

Choose this endpoint when you need to pull a fixed set of named fields out of unstructured or semi-structured text and receive clean JSON back, especially in agent pipelines where downstream steps require structured data. It is particularly useful when you already know the field names you want and want Claude's language understanding to locate and normalize values without writing custom parsing logic. Prefer it over a general LLM call when you want a lightweight, pay-per-call extraction with no API key setup.

## Known failure modes

- Text too short or empty — schema requires minLength 1
- Too many fields requested — schema caps at 20 fields
- maxTokens too low to fit all extracted values — truncated output
- Field names too vague — Claude may misinterpret or return null
- Text exceeds 10,000 character limit — rejected by schema validation
- Payment failure over x402/MPP — 402 response returned before processing

## How this service works

Agent Release Gate: an independent quality check that tells an AI agent whether its output is ready to ship, with repair instructions when it is not. Also offers low-cost utilities for quick answers, summaries, task routing, structured JSON extraction, and Claude text generation. Pay per call with USDC over x402 on Base or MPP on Tempo; no API key or signup.

## Output

A structured JSON object containing the values extracted for each requested field, keyed by the field names provided. Fields not found in the text may be null or omitted. The response is generated by Claude and capped by the specified maxTokens budget.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 10000,
   "minLength": 1
  },
  "fields": {
   "type": "array",
   "items": {
    "type": "string",
    "maxLength": 120,
    "minLength": 1
   },
   "maxItems": 20,
   "minItems": 1
  },
  "maxTokens": {
   "type": "integer",
   "default": 128,
   "maximum": 256,
   "minimum": 64
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-release-gate-structured-json-extraction-46116dd7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentcash-claude-seller-production.up.railway.app](https://www.zero.xyz/host/agentcash-claude-seller-production.up.railway.app/llms.txt)