extension_cli

Active contributors: kubkon, maxdeviant

Purpose

crates/extension_cli is the command-line companion for authoring Zed extensions. It builds, validates, and packages WASM extensions against the public extension API.

Directory layout

crates/extension_cli/
├── Cargo.toml
└── src/
    └── main.rs       # Single-file CLI

The extension API lives in crates/extension_api (consumed by extensions); the in-app host lives in crates/extension_host.

What the CLI does

• Build / package. Compile the user's extension WASM and bundle it with extension.toml, themes, languages, and snippets into the format Zed loads.
• Validate. Check that the manifest is well-formed and the WASM exports match the ABI version the extension declares.
• Publish helpers. The Zed extensions registry is populated by GitHub workflows that run this CLI; see .github/workflows/extension_bump.yml and .github/workflows/extension_auto_bump.yml.

Integration points

• Reads: extension.toml and the extension's source.
• Talks to: the WASM toolchain (cargo + wasm32-wasi target).
• Used by: extension authors locally, plus the registry auto-bump workflows.

Related pages

• Extensions — how the host loads what this CLI ships