Install

brew install lacymorrow/tap/lash

Or with npm, or bun, pnpm, yarn:

npm install -g lashcode

Or the script, which downloads the release binary for your platform:

curl -fsSL https://lash.lacy.sh/install | bash

Then run lash in any project directory.

Where it goes

The script installs the lash binary to $HOME/.lash/bin and adds that directory to your PATH in your shell config.

# somewhere else
LASH_INSTALL_DIR=/usr/local/bin curl -fsSL https://lash.lacy.sh/install | bash

# a specific version
curl -fsSL https://lash.lacy.sh/install | bash -s -- --version 1.7.13

# leave my shell config alone
curl -fsSL https://lash.lacy.sh/install | bash -s -- --no-modify-path

Lash does not replace OpenCode. Different binary name, different directory. If you have both, both work.

Providers

Lash ships no keys and no hosted models. It reads the same provider configuration OpenCode does, so if you already have OpenCode set up, Lash picks it up. If not, the provider docs apply unchanged.

Upgrading

Homebrew and npm upgrade the way you would expect. The install script replaces whatever is in the install directory, and exits early if the version you asked for is already there.