# GPT Schema Extractor

> GPT Schema Extractor is a paid API for AI agents from gpt.558686.xyz, paid per call via x402, $0.5/call, status unknown (last checked 2026-10-02).

Extracts structured schema definitions from a given text prompt or document input using AI

## Facts

- Endpoint: GET https://gpt.558686.xyz/v1/extract/schema?utm_source=zero.xyz
- Price: $0.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-schema-extractor-b07d4b02
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gFS7ogJqbD0-ukgNhK8IZ

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 gpt-schema-extractor-b07d4b02
```

Example prompt: Extract a JSON schema from this sample data: '{"name": "Alice", "age": 30, "email": "alice@example.com"}' — identify all the field names, their types, and whether they're required.

## When to prefer this

Choose this endpoint when you need to automatically infer or extract a data schema from unstructured or semi-structured text, sample data, or natural language descriptions — especially in agentic workflows that need to dynamically model data without manual schema authoring.

## Known failure modes

- Ambiguous or too-short input may return incomplete or generic schema
- Complex nested structures may be flattened or misrepresented
- Non-English input may produce inconsistent field naming
- Rate limiting or payment failure returns 402 status
- Malformed input object returns 400 validation error

## Output

Returns a structured schema object inferred from the provided text input, including field names, data types, and potentially required/optional flags or constraints detected from the input.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "description": "Target JSON Schema object (or string). If omitted, the engine auto-detects a key-value schema."
  },
  "content": {
   "type": "string",
   "description": "Raw text/HTML/data to extract from (required)"
  },
  "instructions": {
   "type": "string",
   "description": "Extra extraction instructions"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-schema-extractor-b07d4b02/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt.558686.xyz](https://www.zero.xyz/host/gpt.558686.xyz/llms.txt)