llm-tools-browser-history 0.2.0

MCP server for searching local browser history files. Also compatible with llm-tools.

Local Browser History MCP

An MCP server that allows searching local browser history files through a unified interface. Works with MCP-compatible clients and as a tool for the llm CLI tool.

The tool currently supports Chrome, Firefox, and Safari browser histories.

Installation

MCP Server (Claude Desktop, Claude Code, etc.)

Install with MCP support:

pip install llm-tools-browser-history

Quick start for Claude Desktop - add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "browser-history": {
      "command": "uvx",
      "args": [
        "llm-tools-browser-history",
      ]
    }
  }
}

Once configured, you can use the browser_history tool in conversations with Claude.

Note that the CLI supports additional options as needed:

browser-history-mcp --help

llm CLI tool

Install for use with llm:

# install the plugin:
llm install llm-tools-browser-history

# see available plugins:
llm plugins

...
  {
    "name": "llm-tools-browser-history",
    "hooks": [
      "register_tools"
    ],
    "version": "0.1.0"
  },
...

Examples:

# Search for pages mentioning yosemite in title or URL
llm -T llm_time -T BrowserHistory "what pages about yosemite did I look up recently?"

# Limit to Firefox and Safari sources
llm -T llm_time -T 'BrowserHistory(["firefox","safari"])' "what pages about yosemite did I look up recently?"

llm -T BrowserHistory "show a table of how much I used each browser over the past year by month"

Security and Privacy

Warning: This tool has read-access to your entire browser history. You risk sending this highly sensitive personal data to third-party services (like OpenAI).

See the lethal trifecta article for more information about the risks of using tools like this with LLMs.

To mitigate the risks of data leakage:

• Only runs queries against a copy of the target browser's history database (so any malicious modification has no effect).
• Limits the number of results to no more than 100 records per tool use.
• Does not return the entire browser history record. This tool will return a subset of fields (URL, title, visit date). Query parameters are stripped from URLs and timestamps only include the date (not the time).

Dev setup

make setup
make test

pip install -e .

llm -T llm_time -T BrowserHistory --td "what pages about yosemite did I look up recently?"

Documentation

• MCP Setup Guide - Setting up the MCP server for Claude Desktop, Claude Code, etc.

ADRs

• 1. Python project
• 2. Expose browser history as an LLM toolbox tool
• 3. Normalized SQL interface
• 4. MCP Standalone Service