> For the complete documentation index, see [llms.txt](https://docs.nimbalyst.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nimbalyst.com/extensions.md). # EXTENSIONS - [Extension System & Marketplace](https://docs.nimbalyst.com/extensions/extension-system-and-marketplace.md): Install Nimbalyst extensions from the marketplace registry to add editors, AI tools, and panels, or publish an extension you built yourself. - [Building Your Own Extensions](https://docs.nimbalyst.com/extensions/building-extensions.md): Build your own Nimbalyst extension with custom editors, AI tools, panels, and themes, packaged with a manifest that declares what it adds. - [Getting Started](https://docs.nimbalyst.com/extensions/building-extensions/getting-started.md): Create your first Nimbalyst extension step by step, ending with a working custom editor for a new file type built on the extension SDK. - [Custom Editors](https://docs.nimbalyst.com/extensions/building-extensions/custom-editors.md): Build a custom editor extension for Nimbalyst: the useEditorLifecycle hook, the EditorHost interface, undo and redo, and large file handling. - [AI Tools](https://docs.nimbalyst.com/extensions/building-extensions/ai-tools.md): Add AI tools to a Nimbalyst extension so coding agents can read and change your custom file types instead of only seeing raw file content. - [Manifest Reference](https://docs.nimbalyst.com/extensions/building-extensions/manifest-reference.md): Full reference for the Nimbalyst extension manifest.json: required fields, permissions, contributions, file pattern syntax, and validation. - [API Reference](https://docs.nimbalyst.com/extensions/building-extensions/api-reference.md): TypeScript API reference for @nimbalyst/extension-sdk, covering ExtensionContext, custom editors, AI tools, panels, storage, and manifest types. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.nimbalyst.com/extensions.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.