# Vextorium Link Checker

> Vextorium Link Checker is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-16).

Checks up to 50 URLs in parallel for HTTP status, final redirect destination, and broken link status — or crawls all links on a given page

## Facts

- Endpoint: POST https://api.vextorium.com/comprobar-enlaces-pago?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-link-checker-c5e9b97a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RID6l3tEdU5LmicvC00yj

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 vextorium-link-checker-c5e9b97a -d '<json body>'
```

Example prompt: Can you check all the links on https://myblog.com/resources and tell me which ones are broken or redirecting somewhere unexpected? Check up to 50 of them.

## When to prefer this

Choose this endpoint when you need to batch-validate up to 50 URLs in parallel with redirect tracking, or when you want to automatically extract and check every link on a given web page. Ideal for site audits, pre-launch checks, or content freshness monitoring. Prefer this over single-URL checkers when you need bulk parallel checking with redirect chain resolution in a single API call.

## Known failure modes

- Invalid or unreachable page URL returns empty results or error
- Exceeding 50 URL limit causes request to be capped or rejected
- Slow target servers may cause timeouts on individual URLs
- Malformed URLs in the input list may return null entries
- If neither urls nor pagina is provided, no links are checked

## How this service works

Check whether a list of URLs, or every link on a page, works: HTTP status, final URL after redirects and broken links first. Up to 50 URLs per call, checked in parallel.

## Output

Returns a JSON object with: total URLs checked, total links found (if crawling a page), number of broken links, and a per-URL results array. Each result includes the original URL, final URL after any redirects, HTTP status code, and a boolean indicating whether the link is working.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "urls": {
   "type": "array",
   "items": {
    "type": "string"
   }
  },
  "limite": {
   "type": "integer",
   "description": "Max URLs (1-50, default 30)"
  },
  "pagina": {
   "type": "string",
   "description": "Page whose links to check"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "rotos": 1,
  "pagina": null,
  "resultados": [
   {
    "ok": false,
    "url": "https://vextorium.com/noexiste",
    "final": "https://api.vextorium.com/noexiste",
    "codigo": 404
   },
   {
    "ok": true,
    "url": "https://vextorium.com",
    "final": "https://vextorium.com/",
    "codigo": 200
   }
  ],
  "comprobados": 2,
  "enlaces_encontrados": 2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-link-checker-c5e9b97a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)