Smithy for VS Code
April 22, 2026 ยท View on GitHub
Provides support for the Smithy interface definition language.
Features
- Syntax highlighting of
.smithyfiles - Snippets
- Completions, jump to definition, and more, powered by smithy-language-server
Configuration
You can configure the extension using VSCode's settings. The following settings are supported:
| Setting | Description |
|---|---|
| smithy.maxNumberOfProblems | Controls the maximum number of problems produced by the server. Default: 100 |
| smithy.trace.server | Traces the communication between VS Code and smithy-language-server. Options: "off", "messages", "verbose"Default: "verbose" |
| smithy.server.executable | Executable to run smithy-language-server, instead of the one managed by the extension. Can be the executable name if it is on your PATH, or an absolute path to the executable. If null, the extension will download it.Default: null |
| smithy.server.version | Version of smithy-language-server to use. Ignored if smithy.server.executable is provided. |
| smithy.server.diagnostics.minimumSeverity | Minimum severity of Smithy validation events to display in the editor. Options: "NOTE", "WARNING", "DANGER", "ERROR"Default: "WARNING" |
Installation
You can install the extension from the VS Code Extension Marketplace, or from source.
Build from source
To install from source, first clone the repo:
git clone https://github.com/smithy-lang/smithy-vscode.git
cd smithy-vscode
Install the extension's dependencies:
npm install
Install the extension:
npm run install-plugin
This will overwrite any existing installation of the extension with the locally built one.
License
This project is licensed under the Apache-2.0 License.