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We assume that you are already familiar with ChatGPT Apps and MCP Servers here. If you’re not, read MCP and ChatGPT Apps Fundamentals first.
Four concepts power Skybridge:

Data Flow

How data moves between server, ChatGPT, and widget

LLM Context Sync

Keep the model aware of widget state via data-llm

Fast Iteration

Local development with instant feedback

Type Safety

End-to-end TypeScript types from server to widget
Start with Data Flow — it establishes the three-actor model that other concepts build on.