# SignalDesk AI – URL Extractor

> SignalDesk AI – URL Extractor is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Extracts all URLs found within a given block of plain text, returning them as a structured list.

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/text/extract-urls?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-url-extractor-e39d5367
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Cl1oUE82zbld-h0hOBr7E

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 signaldesk-ai-url-extractor-e39d5367 -d '<json body>'
```

Example prompt: Pull out every URL from the following text for me: 'Check out our latest post at https://blog.example.com/post-1 and our docs at https://docs.example.com. You can also visit https://example.org/resources for more.'

## When to prefer this

Choose this endpoint when you need a lightweight, cheap ($0.001 USDC) and fast way to extract all URLs from a short-to-medium text blob (up to 4096 chars) without running your own regex or NLP pipeline. Ideal for agents processing scraped content, user-submitted text, or document excerpts where link harvesting is the sole goal.

## Known failure modes

- Text exceeds 4096-character limit — request rejected or truncated
- No URLs present in the input — returns empty urls array
- Malformed or non-HTTP URLs may be missed depending on parser heuristics
- Service unavailable due to Cloudflare Worker quota exhaustion
- Payment not processed correctly via x402 — 402 response returned

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

A JSON object containing a `urls` array listing every URL found in the submitted text, e.g. {"urls":["https://example.com/path","https://example.org"]}. If no URLs are present, the array is empty.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 4096,
   "description": "Text to process."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "urls": [
   "https://example.com/path",
   "https://example.org"
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-url-extractor-e39d5367/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)