# x402 Web Probe – Hub Europe (Germany)

> x402 Web Probe – Hub Europe (Germany) is a paid API for AI agents from kollmz.site:8443, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-27).

Performs pay-per-call HTTP uptime checks, latency measurements, and TLS certificate validation for a given URL, measured from a European (Germany) vantage point.

## Facts

- Endpoint: GET https://kollmz.site:8443/v1/check?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-web-probe-hub-europe-germany-224ae784
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NcJyEqOgTsepG_dthdB17

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-hub-europe-germany-224ae784
```

Example prompt: Can you check if https://example.com is up and responding from Europe, and tell me the TLS certificate status and how fast it responds?

## When to prefer this

Choose this endpoint when you need a European (Germany) vantage point for HTTP uptime, latency, or TLS checks without requiring an account or API key, paying only $0.001 USDC per call via x402. Prefer it over self-hosted monitoring when you need an external perspective from Europe, or over account-based services when you want frictionless pay-per-use access.

## Known failure modes

- Target URL is unreachable or returns a non-2xx status — ok=false is returned with available timing data
- TLS certificate is invalid or expired — authorized=false with days_left potentially negative
- URL does not use port 80 or 443 — request may be rejected or fail
- Invalid or malformed URL input — request rejected
- Payment not completed via x402/USDC — endpoint returns 402 before probe executes

## How this service works

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

## Output

Returns a JSON object containing: whether the request succeeded (ok), the resolved IP address, HTTP status code, TLS details (issuer, days remaining, authorization status), timing breakdown (DNS resolution ms, TTFB ms, total ms), redirect chain, and final URL — all measured from the Hub Europe (Germany) node.

## 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) URL to check (ports 80/443)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tls": {
       "type": "object"
      },
      "status": {
       "type": "number"
      },
      "timing": {
       "type": "object"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ip": "93.184.215.14",
  "ok": true,
  "tls": {
   "issuer": "DigiCert Inc",
   "days_left": 60,
   "authorized": true
  },
  "url": "https://example.com/",
  "node": "vps3",
  "region": "Hub Europe (Germany)",
  "status": 200,
  "timing": {
   "dns_ms": 3.1,
   "ttfb_ms": 95.2,
   "total_ms": 97.8
  },
  "final_url": "https://example.com/",
  "redirects": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-web-probe-hub-europe-germany-224ae784/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kollmz.site:8443](https://www.zero.xyz/host/kollmz.site%3A8443/llms.txt)