Book a demo Get started

CLI

Install the Chainsaw CLI

The install-path firewall for your terminal — free and open source, no account required. One static binary for every major platform, SHA-256 checksum published for each, token stored in the OS keyring.

Pick your platform

Choose your platform below

We couldn't detect your OS automatically. Every binary is listed underneath — grab the one that matches your machine.

See all platforms

All binaries

Every binary ships with a published SHA-256 checksum (chainsaw-checksums.txt) — verify your download before running it (shasum -a 256 -c). Sigstore-signed releases with on-launch signature verification land once the release-signer bot is provisioned.

OS Architecture Filename Size
macOS Apple Silicon (M-series) chainsaw-darwin-arm64 — Download
macOS Intel (x86_64) chainsaw-darwin-amd64 — Download
Linux x86_64 chainsaw-linux-amd64 — Download
Linux ARM64 (aarch64) chainsaw-linux-arm64 — Download
Windows x86_64 chainsaw-windows-amd64.exe — Download

One-liner install

curl -fsSL https://chain305.com/downloads/chainsaw-$(uname -s | tr "A-Z" "a-z")-$(uname -m | sed "s/x86_64/amd64/;s/aarch64/arm64/") -o chainsaw
chmod +x chainsaw && sudo mv chainsaw /usr/local/bin/
chainsaw version

Next up: Set up Chainsaw as a package proxy — the 5-minute getting-started guide.

Verify checksums

Download the checksum manifest and verify your binary before installing: 

curl -fsSL https://chain305.com/downloads/chainsaw-checksums.txt -o chainsaw-checksums.txt
shasum -a 256 -c chainsaw-checksums.txt --ignore-missing

Full manifest: /downloads/chainsaw-checksums.txt (mirror: /downloads/checksums.txt)

Already installed? Log in and put it to work.

chainsaw auth login opens the dashboard in your browser, runs Turnstile, and drops the token into your OS keyring. No copy-pasted API keys.

Start the 5-minute setup