PlugMCP Browser
The page’s own tools,
for any agent.
Hosted MCP servers live on our gateway. Browser tools live in the tab you already have open.
How it works
An extension and a local server. Nothing in between.
Chrome/Edge extension
PlugMCP Browser (Usher) is a Chrome/Edge extension plus a local MCP server.
Off our servers
It does not go through Railway or n8n.
You allow the risky ones
Paying, sending, or deleting waits for your Allow.
Two separate lanes
Hosted servers stay on /s/{slug}. Browser tools stay on your machine.
Install
Three steps, all on your machine.
- 01
Install the extension
Build from the Usher repo, then Load unpacked from packages/extension/dist.
shterminalgit clone https://github.com/demo55oo/ushercd ushernpm installnpm run build - 02
Add it to Cursor
Paste this into mcp.json. Point args at your local usher-mcp.js.
{}mcp.json{ "mcpServers": { "plugmcp-browser": { "command": "node", "args": [ "<path-to-usher>/packages/server/dist/usher-mcp.js" ] } }} - 03
Or Claude Code
shclaude mcp addclaude mcp add plugmcp-browser -- node <path-to-usher>/packages/server/dist/usher-mcp.js
Browser tools stay on your machine.
Hosted servers stay on /s/{slug}.