# x402 Web Probe – US Central (St. Louis) – Meta Endpoint

> x402 Web Probe – US Central (St. Louis) – Meta Endpoint is a paid API for AI agents from rockndefi.xyz:8443, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-22).

Fetches a public webpage from US Central (St. Louis) and returns structured metadata including title, headings, links, Open Graph tags, and description as JSON.

## Facts

- Endpoint: GET https://rockndefi.xyz:8443/v1/meta?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-web-probe-us-central-st-louis-meta-endpoint-f55f15c5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Zr6XgXHVV9FDWpkt1Jy8u

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 x402-web-probe-us-central-st-louis-meta-endpoint-f55f15c5
```

Example prompt: Can you fetch the page metadata for https://example.com — I want the title, headings, links, and any Open Graph tags, measured from the US Central region?

## When to prefer this

Use this endpoint when you need lightweight structured metadata extraction (title, links, OG tags, headings) from a public URL via a US Central geographic vantage point, without needing an account or API key, and you're willing to pay micro-fees in USDC per call via x402.

## Known failure modes

- Non-public or paywalled URLs may return empty or partial content
- Invalid or malformed URL returns an error
- Timeout if the target site is slow or unresponsive from St. Louis
- Non-HTML responses (e.g. PDFs, binary files) may not parse correctly
- Payment failure via x402/USDC on Base blocks the request

## How this service works

Pay-per-call website uptime/latency/TLS checks and fetch-to-Markdown, measured from US Central (St. Louis). USDC on Base via x402. No account or API key.

## Output

A JSON object containing the page's canonical URL, title, h1/heading structure, list of extracted links, Open Graph metadata object, and meta description — all fetched from the US Central (St. Louis) vantage point.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Public http(s) page URL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "og": {
       "type": "object"
      },
      "links": {
       "type": "array"
      },
      "title": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "og": {},
  "url": "https://example.com/",
  "links": [
   "https://iana.org/domains/example"
  ],
  "title": "Example Domain",
  "headings": {
   "h1": [
    "Example Domain"
   ]
  },
  "description": null
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-web-probe-us-central-st-louis-meta-endpoint-f55f15c5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rockndefi.xyz:8443](https://www.zero.xyz/host/rockndefi.xyz%3A8443/llms.txt)