# geld machen url-fingerprint

> geld machen url-fingerprint is a paid API for AI agents from geld-machen-x402.fly.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Fetches a live URL and returns a deterministic fingerprint including final URL, HTTP status, content type, body hash, TLS info, DNS records, and timing

## Facts

- Endpoint: GET https://geld-machen-x402.fly.dev/product/url-fingerprint.json
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/geld-machen-url-fingerprint-9b58c403
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_S3duLOghOwWKuJWiVD62b

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 geld-machen-url-fingerprint-9b58c403
```

Example prompt: Can you fingerprint https://example.com for me — I need the final URL after any redirects, the body SHA256 hash, TLS issuer, and DNS records so I can verify it hasn't changed since last week.

## When to prefer this

Choose this endpoint when you need a fast, deterministic, structured fingerprint of a live URL — especially when you need body hashing for change detection, TLS certificate validation, DNS lookup, or redirect chain resolution all in a single call. Prefer it over generic HTTP fetch tools when you specifically need the SHA256 body hash, TLS details, or DNS records alongside the HTTP response metadata.

## Known failure modes

- Non-HTTPS URLs may be rejected or return an error
- Unreachable or offline URLs will result in a timeout or connection error
- URLs returning non-200 status are still fingerprinted but content may be minimal
- Very large response bodies may be truncated or cause slow responses
- Rate limiting or bot-blocking on the target URL may produce partial or blocked responses
- Payment of $0.01 USDC via x402 required; missing payment results in 402 response

## How this service works

JSON micro-tool for agents: GET ?url= → deterministic live URL fingerprint (final_url, status, content_type, body_sha256, body_len, tls_issuer/subject, dns A/AAAA sample, fetched_at, timing_ms). Reuses live-fetch bits from red-flag 1.2. Not an essay. Brand: geld machen. x402 $0.01 Base USDC.

## Output

A JSON object containing: final_url (URL after redirects), status (HTTP status code), content_type, body_sha256 (SHA-256 hash of response body), body_len (byte length), tls_issuer, tls_subject, dns (object with A and AAAA record samples), fetched_at (ISO timestamp), and timing_ms (round-trip fetch time in milliseconds).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "description": "https URL to fingerprint"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/geld-machen-url-fingerprint-9b58c403/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from geld-machen-x402.fly.dev](https://www.zero.xyz/host/geld-machen-x402.fly.dev/llms.txt)