# Sitemap Validator — MCP tool `findutils:sitemap_validator`

Validate sitemap XML text against the sitemaps.org protocol: well-formed XML, <urlset> or <sitemapindex> and its namespace, absolute http(s) <loc> under 2,048 characters with & escaped, duplicates, mixed hosts, W3C-datetime <lastmod> not in the future, the seven <changefreq> values, <priority> 0.0-1.0, and the 50,000-URL limit. Every issue has a severity, rule id and line number. Accepts up to 10 MB of XML (the protocol allows 50 MB). Checks the pasted text only and fetches nothing, so it does not test that the URLs respond.

- Category: seo
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, no API keys, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/sitemap-validator/execute (no API keys, 60 req/min per IP)
- Reference page: https://findutils.com/mcp/sitemap-validator/
- Same tool on the other surface: https://findutils.com/api/sitemap-validator/

## Connect

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/
```

Claude Desktop (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/"
    }
  }
}
```

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "sitemap_validator",
      "arguments": {
        "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"><url><loc>https://example.com/</loc></url></urlset>"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `xml` | string | yes | The sitemap or sitemap index XML (uncompressed), up to 10 MB. |

Example arguments (verified):

```json
{
  "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"><url><loc>https://example.com/</loc></url></urlset>"
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/sitemap-validator/execute \
  -H "Content-Type: application/json" \
  -d '{
    "xml": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><urlset xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\"><url><loc>https://example.com/</loc></url></urlset>"
  }'

# Parameter schema
curl https://api.findutils.com/api/tools/sitemap-validator
```

Full REST reference: https://findutils.com/api/sitemap-validator/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt