> ## Documentation Index > Fetch the complete documentation index at: https://docs.noxus.ai/llms.txt > Use this file to discover all available pages before exploring further. # Plugins > Add custom nodes, integrations, triggers, and knowledge-base sources to Noxus Plugins let you add new capabilities to Noxus without waiting for them to be built into the platform. A plugin is a small package, installed into your deployment from a Git repository, a file upload, or the public marketplace, that brings its features along with it. A single plugin can add any of the following: * **Custom nodes** — new building blocks that appear in the flow editor, alongside the built-in ones. Use them in flows and co-workers just like any other node. * **Integrations** — a secure connection to an external service. Connect it once in your workspace settings and the plugin's nodes can act on that service on your behalf. * **Triggers** — start flows automatically when something happens in an external system. * **Knowledge-base sources** — pull documents from systems Noxus doesn't cover out of the box into your knowledge bases. Noxus renders every plugin's settings and configuration forms automatically, so plugins feel native — there is no separate app to learn. ## Safe by design Each plugin runs in its own **isolated environment**, separate from the rest of Noxus. That means a plugin can bring whatever it needs to do its job, a misbehaving plugin can't affect the rest of your platform, and plugins only reach your data through controlled, permission-scoped interfaces. Credentials you connect stay **per workspace** — each workspace connects its own. ## Getting a plugin Plugins are installed by an administrator, once per deployment, and then become available across it. You can install one from: * the **public marketplace** of Noxus plugins, * a **Git repository**, or * a **package upload**. Once installed, a plugin's nodes, integrations, triggers, and sources are ready to use. ## Learn more A step-by-step tutorial: scaffold, develop, package, and install. The developer overview: components, the manifest, and the sandboxed runtime.