Using Plugins

Psalm can be extended through plugins to find and fix domain-specific issues.

Using Composer-based plugins

Psalm plugins are distributed as composer packages.

Discovering plugins

Plugins can be found on Packagist website: or from CLI using composer search -t psalm-plugin '.'

Installing plugins

composer require --dev <plugin-vendor/plugin-package>

Managing known plugins

Once installed, use psalm-plugin tool to enable, disable and show available and enabled plugins.

To enable the plugin, run psalm-plugin enable plugin-vendor/plugin-package. To disable it, run psalm-plugin disable plugin-vendor/plugin-package. psalm-plugin show (as well as bare psalm-plugin) will show you the list of enabled plugins, and the list of plugins known to psalm-plugin (installed into your vendor folder)

Using your own plugins

Is there no plugin for your favourite framework / library yet? Create it! It's as easy as forking a repository, tweaking some docblocks and publishing the package to Packagist.

Consult Authoring Plugins chapter to get started.