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The Site Spy API gives you programmatic access to everything the dashboard can do: create and manage watches, organize tags, read change history and snapshots, configure notifications, and more.

Base URL

Authentication

Almost all requests require an API key, sent in the x-api-key header:
You can also pass it as a key query parameter (?key=YOUR_API_KEY) when setting headers isn’t practical — for example in RSS readers.
Get your API key from Settings → API & Monitoring in the Site Spy dashboard and use the Copy Key button to copy it to your clipboard.

Quick examples

Rate limits

Rate limits are enforced per API key. Exceeding the limit returns HTTP 429. The MCP server uses the same limits.

MCP integration

Prefer talking to your watches from Claude, Cursor, or another AI assistant? Site Spy ships an MCP server that wraps this API — see MCP Integration.

Explore the endpoints

Every endpoint is documented in this section with an interactive playground — pick one from the sidebar, plug in your API key, and send real requests from the browser.