Validator is a Model Context Protocol (MCP) server: On-demand drift checks: declared CSS color, radius, spacing & type vs your own tokens or a pack. As an MCP server it plugs straight into AI assistants, exposing its functionality as tools the model can invoke on your behalf.
It's a hosted (remote) server — point your client at https://swatchdog-mcp-970396648818.us-central1.run.app/mcp and you're connected, with nothing to install locally. The current release is v1.0.1, with source at swatchdog-dev/swatchdog-mcp on GitHub.
You'll find Validator in the Design category here on mcp.site; it connects to Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and any other MCP client — see the install snippets below. If you maintain Validator for swatchdog.dev, claim this listing to verify ownership, earn the Verified badge, and keep the details current.