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mcp/harbor
Verified official

substrate browser MCP

v2.0.2

io.github.manuelinuxkr/substrate-browser

Token-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.

transport:stdio runtime:npm
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Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add substrate-browser -e SUBSTRATE_PROXY=<SUBSTRATE_PROXY> -e SUBSTRATE_VIEWPORT_WIDTH=<SUBSTRATE_VIEWPORT_WIDTH> -e SUBSTRATE_VIEWPORT_HEIGHT=<SUBSTRATE_VIEWPORT_HEIGHT> -- npx -y substrate-browser

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.