# Vextorium Broken Link Checker

> Vextorium Broken 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 2026-10-15).

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

## Facts

- Endpoint: POST https://api.vextorium.com/v1/broken-links?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-broken-link-checker-b6bab119
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SqLXLcTeJAtTAw2Ue0fhu

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-broken-link-checker-b6bab119 -d '<json body>'
```

Example prompt: Can you check all the links on https://mysite.com/resources and tell me which ones are broken, what HTTP status code they return, and where they redirect to if applicable?

## When to prefer this

Use this endpoint when you need to validate the liveness and redirect behavior of multiple URLs simultaneously, especially when crawling a page to find all broken links automatically. Prefer this over single-URL HTTP checks when batch efficiency matters, or when you want the final resolved URL after redirect chains. Best suited for web QA, SEO audits, and content maintenance workflows.

## Known failure modes

- Invalid or unreachable page URL returns an error with no results
- Exceeding 50 URLs per call may result in truncation or rejection
- Slow-responding target servers may cause timeouts for individual URLs
- Malformed URLs in the input list return error entries in the results array
- Private or firewalled URLs inaccessible from the checker's network will appear broken

## 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 the total number of links found on the page (if page mode), the number of URLs checked, the number broken, and a results array where each entry contains the original URL, a boolean ok flag, the HTTP status code, and the final URL after any redirects.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "page": null,
  "broken": 1,
  "checked": 2,
  "results": [
   {
    "ok": false,
    "url": "https://vextorium.com/noexiste",
    "code": 404,
    "final": "https://api.vextorium.com/noexiste"
   },
   {
    "ok": true,
    "url": "https://vextorium.com",
    "code": 200,
    "final": "https://vextorium.com/"
   }
  ],
  "found_links": 2
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-broken-link-checker-b6bab119/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)