What is unbrowser?
unbrowser is a MCP server by protostatis that lightweight native browser that runs JavaScript, follows links, fills forms, manages cookies and returns low-token BlockMaps, without Chrome. It is listed under Browser & web and has 16 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | protostatis |
| Repository | protostatis/unbrowser |
| Popularity | 16 GitHub stars |
| Category | Browser & web |
| Security | Low risk (80/100) |
| Rank | #1,418 of 4,418 MCP servers; #136 in Browser & web |
| License | Apache-2.0 |
| Last commit | 2026-08-21 |
| Runs | Locally |
| Language | Rust |
| Platforms | macOS, Windows, Linux |
Is unbrowser safe to install?
unbrowser scores 80/100 on the MCPMods security check: Low risk. Things to review: can take actions such as send, write or deploy. It passed 3 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Runs on your machine only | Pass |
| Needs an API key or account login | Note |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install unbrowser?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/protostatis/unbrowser
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add unbrowser -- <command from README> claude mcp add --transport http unbrowser <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs unbrowser for you:
Add the "unbrowser" MCP server from https://github.com/protostatis/unbrowser to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.