sx

sx is an open-source CLI tool built by sleuth-io that acts as a package manager for AI coding assistant assets. It lets teams capture, version, and distribute skills, rules, MCP configs, slash commands, hooks, and agents across any AI client — from Claude Code and Cursor to GitHub Copilot and Gemini. The project is written in Go, licensed under Apache 2.0, and hosted on GitHub.

What It Is

sx fills the gap between individual AI power users and the rest of a development team. When one developer figures out a highly effective prompt, MCP configuration, or slash command, that knowledge typically stays on their machine. sx provides a manifest-and-lock pattern — similar to npm, cargo, or uv — so teams can define a vault of AI assets, scope them to orgs, repos, teams, bots, or individual users, and have every developer automatically receive the right tools on install.

How the Vault and Scoping Model Works

sx organizes assets in a vault backed by one of three distribution models:

• Local/path vault — personal tools shared across multiple local projects
• Git vault — a shared git repository for small teams
• Skills.new vault — centralized management with a UI for discovery, creation, and usage analytics for larger teams and enterprises

Assets are declared in an sx.toml manifest and resolved into a per-user lock file. Install scopes control who receives each asset: --org (everyone), --repo or --path (repo/subpath-scoped), --team (admin-gated group), --user (single identity), or --bot (CI runner or agent identity). The sx install --dry-run command previews what would be resolved without writing anything.

Supported AI Clients

The project's README lists full support for a broad set of AI coding clients:

• Claude Code, Cline, Codex, Cursor, GitHub Copilot, Gemini (CLI, VS Code, JetBrains, Android Studio), Kiro, and Openclaw
• claude.ai and chatgpt.com via a cloud relay that exposes the local vault as an MCP endpoint over a WebSocket — vault content stays local

Asset Types and Workflow

Teams can build and share several asset categories through sx:

• Skills — custom prompts and behaviors for specific tasks
• Rules — coding standards applied to specific file types or paths
• Agents — autonomous AI agents with defined goals
• Commands — slash commands for quick actions
• Hooks — automation triggers for lifecycle events
• MCP Servers (experimental) — Model Context Protocol servers for external integrations
• Plugins — Claude Code plugin bundles

sx also integrates with skills.sh, described in the README as a community directory of 85k+ agent skills, enabling teams to pull in community-contributed assets alongside their own.

Update: v1.0.4

The latest release is v1.0.4, published on May 15, 2026. The repository was created in December 2025 and has seen active development, with the last push recorded in May 2026. The roadmap shows RBAC and a gated change-request flow as the next planned milestone, with all major client integrations and vault types already marked complete.