MCP server and Firefox add-on that let an AI agent drive your real, logged-in browser. Free tier.
Connect Runs on your machine
claude mcp add usable-browser-agent -e UBA_PORT=<UBA_PORT> -- npx -y [email protected]
{
"mcpServers": {
"usable-browser-agent": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"UBA_PORT": "<UBA_PORT>"
}
}
}
}
{
"mcpServers": {
"usable-browser-agent": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"UBA_PORT": "<UBA_PORT>"
}
}
}
}
{
"servers": {
"usable-browser-agent": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"UBA_PORT": "<UBA_PORT>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
UBA_PORTOptional | Local WebSocket port the browser extension connects to (default 8876). |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 26 Sep 2026 |
| Last updated | 26 Sep 2026 |
| Registry name | io.github.Savvy-Tech-Sphere/usable-browser-agent |
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