SageFs

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SageFs transforms F# Interactive into a comprehensive live development environment, enabling sub-second hot reloading, full project context in the REPL, and instant feedback. It integrates a powerful live unit testing system that runs affected tests automatically on every code edit across various editors and .NET test frameworks, providing immediate pass/fail results and code coverage. Furthermore, it exposes an MCP server, allowing AI agents to interact directly with your running F# code for execution, type-checking, API exploration, and test runs, all within a crash-proof, multi-session architecture.

Características Principales

• Sub-second hot reload with Harmony patching for instant updates to running F# applications.
• Live unit testing with real-time pass/fail markers and coverage for all major .NET test frameworks across multiple editors.
• Full F# project context loaded into the REPL, including NuGet packages, project references, and namespaces.
• MCP server for AI agents to compile, run, and test F# code against the live project environment.
• Multi-frontend support allowing connections from VS Code, Neovim, TUI, or web dashboard to a single daemon.
• 33 GitHub stars

Casos de Uso

• Accelerating F# web development by providing instant feedback and hot reload, eliminating manual rebuilds and restarts.
• Improving code quality and confidence through continuous, automated live unit testing that runs affected tests on every edit.
• Empowering AI agents to interact with and test F# code in a live, fully-loaded project environment.