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Skybridge

Full-stack open source React framework for building MCP apps

Skybridge

What it does

Skybridge is an open-source React framework for building MCP (Model Context Protocol) apps that run inside AI assistants like ChatGPT, Claude, VSCode, Cursor, and Goose. It provides a full-stack TypeScript environment where developers define tools on the server side and write React components for views, with end-to-end type safety. The framework handles infrastructure, development loop, MCP server, view rendering, client compatibility, and testing tunnel, enabling developers to write once and deploy across multiple MCP clients.

Who it is for

Skybridge is designed for developers building conversational UIs and tools that integrate with AI assistants. It targets teams and individuals who want to create MCP apps with React, leveraging familiar patterns like react-query-style hooks and hot module reload. The framework is used by companies such as Bitmovin, Evaneos, Datadog, Touchstream, Alpic, Cottages.com, Drio, and others, as shown on the website. It is also recommended in OpenAI documentation and blog, indicating adoption by the broader developer community.

Why it matters

MCP apps are a new category of applications that run inside AI assistants, allowing users to interact with tools and data through natural language. Skybridge simplifies the development of these apps by providing an opinionated framework that abstracts client differences, offers a delightful dev environment with HMR and local emulator, and ensures type safety from server to view. This reduces fragmentation and speeds up development, making it easier for developers to build and ship MCP apps. The framework is MIT-licensed and open source, with 100K monthly npm downloads and 1K+ GitHub stars, indicating growing adoption.

Launch signal

Skybridge has been featured on the OpenAI Developers Blog in an article titled "15 lessons building ChatGPT apps," and is recommended in the OpenAI documentation for MCP. The website claims it powers 10% of MCP apps in Claude and ChatGPT. The framework is actively maintained by the Alpic team, with contributions from the community. The website includes testimonials from developers praising its type safety, dev tools, and ease of use.

Brand and naming

The name "Skybridge" evokes a sense of connection and elevation, fitting for a framework that bridges MCP apps across multiple clients. It is short, memorable, and has a strong domain presence (skybridge.tech). The tagline clearly positions it as a full-stack React framework for MCP apps, though 'MCP' may require niche familiarity. Overall, the name is distinctive and aligns well with the product's bridging function.

Founder

Julien Vallini, Frédéric Barthelet

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