# 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 deterministic fingerprint of a given HTTPS URL, returning body SHA-256 hash, TLS details, and DNS information for $0.01 per call.

## Facts

- Endpoint: GET https://geld-machen-x402.fly.dev/product/url-fingerprint
- 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-9376593b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iMjTtct7oRNhBKANvWNeY

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-9376593b
```

Example prompt: Can you fingerprint https://example.com for me — I need the body SHA-256 hash plus TLS and DNS details so I can check if it's changed since last week.

## When to prefer this

Choose this endpoint when you need a cheap ($0.01), deterministic, server-side fingerprint of a URL including its body hash, TLS, and DNS — especially for change detection, integrity verification, or security auditing. Prefer this over client-side fetching when you need consistent hashing from a neutral vantage point, or when you want TLS/DNS metadata alongside the content hash in a single call.

## Known failure modes

- Non-HTTPS URL provided — endpoint requires an https:// URL
- URL is unreachable or times out — returns error with no fingerprint data
- Invalid URL format — returns 400-class error
- Payment not fulfilled — returns HTTP 402 requiring $0.01 USDC payment
- Target URL blocks the crawler — may return incomplete or error response

## How this service works

TIP-OF-SPEAR: URL Fingerprint ($0.01) GET ?url= → body_sha256/TLS/DNS. DEMAND-MATCHED SERP tip: Web Search ($0.02) GET ?q= (required) → ranked results. OCR tip: Image OCR ($0.01) GET ?url= → Tesseract text (COGS=0). Builder tool: Bazaar Readiness Check — FREE ?url= indexed yes/nein + issue count; PAID report $0.05 Fix-JSON. Gated-data: Base DeFi Snapshot ($0.03) balances+gas+protocol TVL/APY. Free teasers have no live hash/results. Upsell red-flag $0.25. Ladder: 0.01→0.02→0.025→0.25→0.35→0.49→0.75→17.

## Output

Returns a JSON object containing the body_sha256 (SHA-256 hash of the response body), TLS certificate details (issuer, expiry, protocol version), DNS resolution info, final resolved URL after redirects, and HTTP status code.

## 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-9376593b/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)