kagi-session-mcp

An MCP server that lets your agent search Kagi using your existing browser session. No API key, no extra subscription, no extra config: it reads the Kagi cookie from whatever browser you're already logged into.

Install

Until the first crates.io release, install straight from git:

cargo install --git https://github.com/checksumdev/kagi-session-mcp --locked

This builds and drops kagi-session-mcp in ~/.cargo/bin, which is already on your PATH if cargo is set up normally. The --locked flag reuses the repo's Cargo.lock so you get the same dependency versions that CI tested with. To pin further:

# pin to a release tag
cargo install --git https://github.com/checksumdev/kagi-session-mcp --tag v0.1.0 --locked

# pin to a specific commit
cargo install --git https://github.com/checksumdev/kagi-session-mcp --rev <sha> --locked

Or build locally:

git clone https://github.com/checksumdev/kagi-session-mcp
cd kagi-session-mcp
cargo build --release

The binary ends up at target/release/kagi-session-mcp.

Configure your client

The server speaks plain MCP over stdio, so it works anywhere stdio-based MCP is supported. Click your client:

{
  "mcpServers": {
    "kagi": {
      "command": "kagi-session-mcp"
    }
  }
}

claude mcp add kagi -- kagi-session-mcp

{
  "mcpServers": {
    "kagi": {
      "command": "kagi-session-mcp"
    }
  }
}

{
  "servers": {
    "kagi": {
      "type": "stdio",
      "command": "kagi-session-mcp"
    }
  }
}

{
  "mcpServers": {
    "kagi": {
      "command": "kagi-session-mcp"
    }
  }
}

{
  "mcpServers": {
    "kagi": {
      "command": "kagi-session-mcp",
      "disabled": false
    }
  }
}

{
  "experimental": {
    "modelContextProtocolServers": [
      { "transport": { "type": "stdio", "command": "kagi-session-mcp" } }
    ]
  }
}

{
  "context_servers": {
    "kagi": {
      "command": { "path": "kagi-session-mcp", "args": [] }
    }
  }
}

Manual session token

If your browser is locked down (Chrome v20 ABE, headless setups, sandboxed profiles) you can paste a Session Link token from kagi.com/settings?p=user_details:

{
  "mcpServers": {
    "kagi": {
      "command": "kagi-session-mcp",
      "env": { "KAGI_SESSION_TOKEN": "your-session-link-token" }
    }
  }
}

Tools

kagi_search accepts query, limit, page, time (day/week/month/year), region (e.g. us, de), safe (off/moderate/strict), and lens (toolbar slot 0..7). It supports the full Kagi operator set: site:, filetype:, -exclude, "exact phrase", before:YYYY-MM-DD, and after:YYYY-MM-DD.

Troubleshooting

Run kagi_status from your agent. If session_found is false:

• App-Bound Encryption (Chrome 127+): the cookie can't be decrypted from outside the browser. Use KAGI_SESSION_TOKEN instead.
• no kagi session found: log in to Kagi in any supported browser, then retry.
• session was found but kagi rejected it: cookie expired. Reload Kagi in the browser, then retry.

For deeper logs, set RUST_LOG=kagi_session_mcp=debug and re-launch the host. Logs go to stderr (stdout is reserved for the MCP JSON-RPC frames).

Contributing

PRs welcome. There's a short CONTRIBUTING.md covering issue conventions, commit format, and how to handle Kagi changing its markup or routes, which is the most common reason this repo needs patches.

License

MIT. See the LICENSE file for details.

Sponsor

If this saves your agent some search time, you can buy me a coffee on Ko-fi. And please pay for Kagi too: agentic search is exactly the kind of usage that funds the work they do.