skybridge.tech

# Skybridge > The #1 full stack open-source TS framework for building ChatGPT and MCP Apps ## Docs - [API Reference](https://docs.skybridge.tech/api-reference.md): Detailed documentation for all hooks and utilities provided by Skybridge. - [CLI Reference](https://docs.skybridge.tech/api-reference/cli.md): Complete reference for Skybridge CLI commands - [createStore](https://docs.skybridge.tech/api-reference/create-store.md): Create Zustand stores with automatic widget state persistence, actions, and middleware support. - [data-llm Attribute](https://docs.skybridge.tech/api-reference/data-llm.md): Create a feedback loop between your widget UI state and the model for contextual responses. - [generateHelpers](https://docs.skybridge.tech/api-reference/generate-helpers.md): Create fully typed hooks with end-to-end inference from your MCP server, like tRPC for widgets. - [Type Utilities](https://docs.skybridge.tech/api-reference/infer-utility-types.md): Extract input, output, and structured content types from your MCP server definition. - [McpServer](https://docs.skybridge.tech/api-reference/mcp-server.md): The main class for building MCP servers with Skybridge, supporting tools, widgets, and type inference. - [mountWidget](https://docs.skybridge.tech/api-reference/mount-widget.md): Mount your React widget into the Skybridge runtime root element. - [registerWidget](https://docs.skybridge.tech/api-reference/register-widget.md): Register an interactive widget with React UI that renders in the host's iframe environment. - [useAppsSdkContext](https://docs.skybridge.tech/api-reference/use-apps-sdk-context.md): Low-level hook for subscribing to OpenAI host global state values directly. - [useCallTool](https://docs.skybridge.tech/api-reference/use-call-tool.md): React hook for calling MCP tools from widgets with typed API and state management. - [useDisplayMode](https://docs.skybridge.tech/api-reference/use-display-mode.md): Read and control widget display modes: inline, full