SageFs — security grade SAFE, quality 63/100

Security audit verdict: SAFE · quality 63/100

No red flags found in any of the 11 categories — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against the SlowMist agent-security taxonomy, refreshed every 8 hours. Full audit →

by WillEhrendreich · MCP Server · ★ 69

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

🔒 Is SageFs safe to install? View the security audit →

About SageFs

SageFs You save. Tests pass. Browser updates. Under a second. A live F# engine — hot reload, live testing, AI-native — for every editor, for free. []() []() What is SageFs? SageFs is a live F# development engine. Start it once, connect any editor — VS Code, Neovim, Visual Studio, or the built-in TUI — and get sub-500ms feedback on every save: inline results, live test markers, hot reload, and AI agent access via MCP. It runs as a daemon with isolated session workers, so multiple editors and AI agents can share the same live state simultaneously. How is SageFs different from Ionide? Ionide provides IntelliSense, diagnostics, and project support through the F# Compiler Service. SageFs adds live execution: eval any expression and see results inline, continuous test feedback on every save, and hot reload that patches your running app. Use both together — Ionide for editing, SageFs for running. Platforms: Windows, macOS, Linux.

ai-toolsfsharpfsharp-app-developmentfsharp-interactivelive-testingmcpmcp-clientmcp-serverreplvisual-studio-extension

Quick Facts

Stars69
Forks5
LanguageF#
CategoryMCP Server
LicenseMIT
Quality Score63.1866326406903/100
Open Issues1
Last Updated2026-09-20
Created2026-02-14
Platformscli, mcp, vscode
Est. Tokens~23k

Compatible Skills

These tools work well together with SageFs for enhanced workflows:

  • ChatIDE — semantic(0.19)+complementary+rare_topics+similar_pop+shared_platform (46%)
  • Lim-Code — semantic(0.17)+complementary+rare_topics+similar_pop+shared_platform (45%)
  • argus — semantic(0.16)+complementary+rare_topics+similar_pop+shared_platform (45%)

SageFs alternative? Top 6 similar tools

Looking for a SageFs alternative? If you're comparing SageFs with other mcp server tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

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Frequently Asked Questions

What is SageFs?

SageFs is Sage Mode for F# development — REPL with solution or project loading, Live Testing for FREE, Hot Reload, and session management.. It is categorized as a MCP Server with 69 GitHub stars.

What programming language is SageFs written in?

SageFs is primarily written in F#. It covers topics such as ai-tools, fsharp, fsharp-app-development.

How do I install or use SageFs?

You can find installation instructions and usage details in the SageFs GitHub repository at github.com/WillEhrendreich/SageFs. The project has 69 stars and 5 forks, indicating an active community.

What license does SageFs use?

SageFs is released under the MIT license, making it free to use and modify according to the license terms.

What are the best alternatives to SageFs?

The top alternatives to SageFs on Agent Skills Hub include MCP-Defender, BifrostMCP, mcp-fusion. Each offers a different approach to the same problem space — compare them side-by-side by stars, quality score, and community activity.

How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy, covering 11 red-flag categories including credential harvesting, data exfiltration, and curl | sh installers. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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