Public Browser: MCP server, setup and security

What Public Browser does

According to its repository: “Chrome automation over raw CDP with multiple tabs, cached accessibility-tree refs, server-side multi-step flow execution and a Python scripting API.”

An MCP server gives an AI agent extra tools it calls during the conversation: the agent reads their description, decides to use them and gets the result back. Public Browser is listed under Browser automation, a category of 109 servers in the directory, where it ranks #82 by stars.

Topics declared by the repository: agentic-ai, ai-agent, browser-automation, cdp, chrome, chrome-devtools-protocol.

Installing and connecting Public Browser

Distribution modes declared in the official MCP registry:

• npm package (Node.js, usually started with npx)

Like any MCP server, you declare it in your client's configuration (Claude Desktop, Claude Code, Cursor, VS Code, Codex…): a name, the command that starts it or its URL, and any environment variables. The client then starts it and lists its tools. Project language: Python, TypeScript. Listed systems: macOS, Windows, Linux.

Security: what to check

An MCP server runs code with the rights you give it, and the model reads its tool descriptions: a malicious or compromised server can hijack the agent. Read the code, or pick a maintained and widely used server, before connecting it.

Points found for Public Browser:

• System access: the Browser automation category gives the agent control over files, a terminal, code or a browser. A booby-trapped instruction in content the agent reads (prompt injection) can then turn into an action.

Good practice: grant only the rights needed (least privilege), require human approval for irreversible actions, and run the AI agent security check.

Project activity and maintenance

Created on April 7, 2026, the Silbercue/public-browser repository has 19 stars and 1 forks, with 2 open issues. It has more stars than 37% of the servers in the directory. It received changes this month. Version published in the registry: 3.0.0 (September 24, 2026).

Stars measure attention, not quality: a recent, heavily promoted project can collect them fast, while a useful but niche server will have few.