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Plugins add new capabilities to the agent — custom skills, credential types, and interactive apps that run inside the chat sidebar. Open plugin management at Settings → Agent → Plugins.

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Plugin structure

Each plugin consists of:
  • Definition — Name, description, and metadata
  • Skills — Optional structured instructions in SKILL.md files
  • Credentials — Optional credential type definitions the plugin needs (e.g. API tokens)
  • Apps — Optional interactive UIs that render inside the sidebar

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Viewing plugins

The plugins settings page shows all installed plugins with:
  • Plugin name and description
  • List of skills the plugin provides
  • Required credentials and their configuration status

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Plugin credentials

Some plugins require credentials (like API keys or access tokens). When a plugin declares a credential type, you can configure the credential in the plugin settings. Credential fields can be:
  • Secret — Encrypted and stored securely, never exposed in plaintext
  • Non-secret — Stored as plain text (e.g. project IDs, usernames)

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Plugin apps

Plugins can ship interactive mini-apps that render in an iframe within the chat sidebar. The agent can open these apps and exchange messages with them via postMessage. This enables plugins to provide rich UI experiences — for example, a Figma plugin could show a node preview panel, or a database plugin could display query results.

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Built-in plugins

stagewise ships with bundled plugins in the bundled/plugins directory. These are always available and cannot be removed. Additional plugins can be installed from the community or created by the user.