# URL Metadata Fetcher (GPT-5.5 x402 Gateway)

> URL Metadata Fetcher (GPT-5.5 x402 Gateway) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.0001/call, status unknown (last checked 2026-09-15).

Fetches and returns structured metadata for a given URL, including title, description, and other page-level signals.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/tools/url-metadata
- Price: $0.0001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/url-metadata-fetcher-gpt-5-5-x402-gateway-daa6f398
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ot0LqZeaPxYrWO-SmRFkT

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 url-metadata-fetcher-gpt-5-5-x402-gateway-daa6f398
```

Example prompt: Can you fetch the metadata for https://example.com/some-article — grab the title, description, and any structured info from the page?

## When to prefer this

Use this endpoint when you need lightweight, structured metadata extraction from a URL (title, description, OG tags) without full page scraping. Best suited for single-URL lookups at very low cost ($0.0001 USDC). Prefer this over full scraping tools when you only need page-level signals, not body content. The x402 micropayment model means no subscription is needed.

## Known failure modes

- URL is unreachable or returns a non-200 status — ok:false with error details
- URL exceeds max_bytes limit and content is truncated or rejected
- timeout_ms exceeded if remote server is slow — timeout error returned
- Too many redirects if page has redirect chains beyond max_redirects
- Invalid or malformed URL input — schema validation error
- Payment failure via x402 — 402 response before endpoint is reached

## How this service works

Fetch a public HTTP(S) URL and return status, final URL, title, meta description, canonical URL, Open Graph fields, and a short text sample. This deterministic endpoint does not call an upstream model. Pay up to $0.001 per request with x402 USDC on Base. Public paid calls are limited to 1500 input characters and 128 output tokens.

## Output

A JSON object with ok status, tool name ('urlMetadata'), a human-readable summary of the URL's structured metadata, and a fetchedAt timestamp. May include title, description, Open Graph tags, and other page-level metadata fields extracted from the target URL.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "url": "https://example.com",
   "max_bytes": 65536,
   "timeout_ms": 5000,
   "max_redirects": 2
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "maxLength": 2048,
       "minLength": 1
      },
      "max_bytes": {
       "type": "integer",
       "maximum": 524288,
       "minimum": 4096
      },
      "timeout_ms": {
       "type": "integer",
       "maximum": 12000,
       "minimum": 1000
      },
      "max_redirects": {
       "type": "integer",
       "maximum": 3,
       "minimum": 0
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tool": {
       "type": "string"
      },
      "fetchedAt": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/url-metadata-fetcher-gpt-5-5-x402-gateway-daa6f398/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)