# SiteCheck Link Checker

> SiteCheck Link Checker is a paid API for AI agents from api.sitecheck-api.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-14).

Crawls a webpage and checks all its links for broken URLs, redirects, and HTTP status codes

## Facts

- Endpoint: GET https://api.sitecheck-api.workers.dev/api/links?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitecheck-link-checker-a68b8c6d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TWoIyr64tPByN08KbkxQ9

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 sitecheck-link-checker-a68b8c6d
```

Example prompt: Can you check all the links on https://example.com/ and tell me which ones are broken or redirecting?

## When to prefer this

Use this endpoint when you need to audit the hyperlinks on a specific page for broken URLs, redirect chains, or external link health. Ideal for SEO audits, pre-launch site checks, and content quality reviews. Prefer this over a full site crawler when you only need link status for a single page rather than a recursive sitemap crawl.

## Known failure modes

- Target page is unreachable or returns an error — links list may be empty
- Some links may be skipped if the server blocks HEAD and GET requests
- Only up to 500 links are listed; additional links are found but not detailed
- Links that require authentication may appear as broken (401/403)
- Dynamic or JavaScript-rendered links may not be detected

## How this service works

Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment, web page to Markdown reader, PDF to text, sitemap URLs, tech stack detection, translation, exchange rates, e-mail pre-check, domain RDAP/DNS lookup, Solana token checks, trending tokens and wallet holdings, plus business and compliance data (EU VAT/VIES, IBAN, LEI/GLEIF, US recalls, OSHA/EPA violations, UK insolvency notices). Also: SEO metadata, link checking, redirect chains, security headers, mail DNS (SPF, DMARC, DKIM), QR codes, language detection, photo EXIF, identifier validation, image OCR, SEC filings, SEC financials, Congress bills, macro rates, UK company data, GitHub repo stats, Hacker News, Wikipedia, gas prices, Solana swap quotes, ERC-20 token checks, ENS names, EVM wallet balances, EVM balances, transactions and contract calls, Solana transactions and accounts, crypto prices, candles and order books, DeFi TVL, yields and stablecoins, SEC insider trades, weather, geocoding and holidays, IP owners and postcodes, npm, PyPI and crates package data and vulnerabilities, GitHub profiles, arXiv papers and DOIs, structured extraction, summaries, sentiment and reranking, HTML tables and RSS feeds, Bitcoin fees, addresses and transactions, Bitcoin address balances, Bitcoin transaction status, EVM calldata decoding, verified EVM contracts, Hyperliquid perpetual markets, Hyperliquid account positions, Polymarket odds, crypto fear and greed, DeFi fees, DEX volume, company registries of four countries, ISIN, CUSIP and ticker lookup, SEC full-text search, SEC 8-K events, FDA drug labels, FDA adverse event counts, clinical trials, PubMed articles, US federal grants, EU public tenders, NPI provider lookup, US address geocoding, USGS earthquakes, NWS weather alerts, sunrise and moon times, time zone conversion, distance and bearing, GDACS disaster alerts, llms.txt checks, AI crawler access, tracker and cookie audits, certificate transparency, site logos and icons, GitHub releases, GitHub issues, Stack Overflow answers, read-only Wikidata queries, text moderation, image descriptions, text classification, named entity extraction, PII redaction, phone number checks, cron explanations, JSON Schema validation. Plus prediction-market search, briefs, quotes and unsigned buy transactions, powered by Panta. Payment: x402, USDC on Base, Solana or Arc. No signup, no API key.

## Output

Returns a list of up to 500 links found on the page, each with its URL, anchor text, HTTP status code, whether it's OK or broken, the final URL after redirects, whether it redirected, and whether it's internal or external. Also includes summary totals: found, broken, checked, skipped, not checked, and redirected counts, plus the page's own final URL and timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "Page URL or domain"
      },
      "scope": {
       "type": "string",
       "description": "all (default), internal or external"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "url": "https://example.com/",
  "note": "Up to 40 links are checked (HEAD, then GET where HEAD is refused). Rows after the first 500 are not listed.",
  "links": [
   {
    "ok": true,
    "url": "https://www.iana.org/domains/example",
    "text": "More information...",
    "error": null,
    "status": 200,
    "checked": true,
    "finalUrl": "https://www.iana.org/help/example-domains",
    "internal": false,
    "redirected": true
   },
   {
    "ok": false,
    "url": "https://example.com/old",
    "text": "Old page",
    "error": null,
    "status": 404,
    "checked": true,
    "finalUrl": "https://example.com/old",
    "internal": true,
    "redirected": false
   }
  ],
  "scope": "all",
  "totals": {
   "found": 2,
   "broken": 1,
   "checked": 2,
   "skipped": 0,
   "notChecked": 0,
   "redirected": 1
  },
  "finalUrl": "https://example.com/",
  "checkedAt": "2026-10-13T09:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitecheck-link-checker-a68b8c6d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sitecheck-api.workers.dev](https://www.zero.xyz/host/api.sitecheck-api.workers.dev/llms.txt)