Install the Semgrep CLI for Guardian

This page applies only if you use a coding agent other than Claude Code or Codex, or if you run the local Claude Code plugin. The Claude Code and Codex plugins are recommended and don’t require a local Semgrep CLI. Prefer the Quickstart unless you specifically need a local CLI integration.

Install the Semgrep CLI using pipx, uv, or Homebrew. This requires Python 3.10 or later — the Semgrep CLI needs Python at runtime regardless of how you installed the CLI:

# preferred: install using pipx (https://pipx.pypa.io/stable/how-to/install-pipx/)
pipx install semgrep

# preferred: install using uv (https://docs.astral.sh/uv/)
uv tool install semgrep

# best-effort (macOS): install using Homebrew (maintained on a best-effort basis; often lags behind the latest release)
brew install semgrep

NOTEpipx and uv are the preferred installation methods. The Homebrew formula is maintained on a best-effort basis and often lags behind the latest release.Homebrew users: ensure that you’ve added Homebrew to your PATH.

Verify that you’ve installed the latest version of Semgrep:

semgrep --version

semgrep login && semgrep install-semgrep-pro

semgrep login launches a browser window. You can also use the activation link printed in the terminal.

Next steps

Return to Choose your setup and pick your coding agent to finish configuring Guardian.

Semgrep Guardian

Set up your coding agent

Using Semgrep Guardian

Deploy across your organization

Install the Semgrep CLI for Guardian

Next steps

​Next steps

Next steps