Show HN: Sx – an open-source package manager for AI skills, MCPs, and commands
Sx is an open-source package manager for sharing and managing AI coding assistant skills, MCP configs, and commands. It solves the problem of siloed AI knowledge in teams, supports multiple AI clients, and enables centralized collaboration.
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Capture what your best AI users have learned and spread it to everyone automatically.
⭐ Star this repo · 🌐 Website · 📋 Changelog · 📄 License
Why sx?
Your best developers have figured out how to make AI assistants incredibly productive - custom skills, MCP configs, slash commands, proven patterns. But that knowledge is stuck on their machines.
Current workarounds don't scale:
Copy into each repo - Duplication nightmare, no central updates, version drift
Global config - Bloats context for projects/tasks that don't need those skills
Client plugins - Manually install each one, locked to one AI client, no bundling
sx solves this by:
Sharing expertise - Turn individual discoveries into team assets
Instant onboarding - New devs inherit the team's AI playbook on day one
Central updates - Change once in your vault, everyone gets the update
Scoped installation - Right assets for each org, team, bot, repo or person, no context bloat
Works with any AI client - Claude Code, Cursor, GitHub Copilot, Gemini, Kiro, and more, plus claude.ai and chatgpt.com via the cloud relay
Quickstart
Install via Homebrew (macOS/Linux):
brew tap sleuth-io/tap brew install sx
Or via shell script:
curl -fsSL https://raw.githubusercontent.com/sleuth-io/sx/main/install.sh | bash
Then
Initialize
sx init
Add an asset from your vault
sx add /path/to/my-skill
Install assets to your current project
sx install
Multiple vaults? Use profiles to switch between them:
sx profile add work # Add a new profile sx profile use work # Switch to it sx profile list # See all profiles
Install targets — pick who sees which asset:
sx install my-skill --org # everyone in the vault sx install my-skill --repo github.com/acme/infra # only inside that repo sx install my-skill --path github.com/acme/infra#docs/ # one path in a repo sx install my-skill --team platform # every member of a team sx install my-skill --user [email protected] # a single user (must be the caller) sx install my-skill --bot python-backend # a bot identity (CI runner, agent)
Scope Who gets it
--org Everyone — the default if no flag is set
--repo / --path Callers working inside the named repo or subpath
--team Team members; admin-gated
--user A single human, must match caller's git identity
--bot A bot identity, resolved when SX_BOT= is set
See docs/scoping.md for the full overview and links to a per-scope doc for each install target.
Preview — see what sx install would resolve for you, the pip freeze analogue, without downloading or writing anything:
sx install --dry-run
Use your vault from claude.ai or chatgpt.com — expose it as an MCP endpoint via the skills.new relay:
sx cloud connect # opens skills.new, paste back the attach line sx cloud serve # keep this running — Ctrl+C exits sx cloud status # prints the MCP URL to paste into claude.ai / chatgpt.com
The relay forwards requests over a WebSocket your machine opens — vault content stays local. See docs/cloud-relay.md.
Usage analytics & audit:
sx stats # adoption dashboard sx stats --since 7d --json # machine-readable sx audit # recent team/install mutations sx audit --actor [email protected] --since 30d --event install.set
Already using Claude Code?
If you've built up skills, plugins, or MCP configs in your .claude directory, sx helps you version, sync across machines, and share with teammates.
Add your existing skills/commands (sx auto-detects the type)
sx add ~/.claude/commands/my-command sx add ~/.claude/skills/my-skill sx add code-review@claude-plugins-official
Your prompt files stay exactly as they are - sx just wraps them with metadata for versioning.
What can you build and share?
Skills - Custom prompts and behaviors for specific tasks
Rules - Coding standards and guidelines that apply to specific file types or paths
Agents - Autonomous AI agents with specific goals
Commands - Slash commands for quick actions
Hooks - Automation triggers for lifecycle events
MCP Servers (experimental) - Model Context Protocol (MCP) servers for external integrations
Plugins - Claude Code plugin bundles with commands, skills, and more
skills.sh support
sx integrates with skills.sh, a community directory of 85k+ agent skills.
sx add anthropics/skills/frontend-design # Add a specific skill sx add vercel-labs/agent-skills # Browse skills in a repo sx add --browse # Search and browse the full directory
Distribution models
Choose the right distribution model for your team:
Local (Personal)
Perfect for easily sharing personal tools across multiple personal projects
sx init --type path --path my/vault/path
Git vault (Small teams)
Share assets through a shared git vault
sx init --type git --repo [email protected]:yourteam/skills.git
Skills.new (Large teams and enterprise)
Centralized management with a UI for discovery, creation, sharing, and usage analytics
sx init --type sleuth
How it works
sx follows the manifest-and-lock pattern used by npm, cargo, and uv:
Manifest (sx.toml) — the vault's source of truth. Lists every managed asset, its install scopes (org, repo, path, team, bot, user), and team definitions (members, admins, repositories). Committed to git / path vaults. See docs/manifest-spec.md.
Lock file — a per-user resolved artifact. sx install reads the manifest, resolves team and user scopes against the caller's git identity, and writes the result to the user's cache directory (~//sx/lockfiles/). When the resolved lock changes, the previous file is rotated with a timestamp so old installs stay reproducible.
Audit + usage streams — every team/install mutation appends an audit entry to .sx/audit/YYYY-MM.jsonl; usage events append to .sx/usage/YYYY-MM.jsonl. Query them with sx audit / sx stats.
High level: create assets with metadata, share to your vault, install globally, per repo, per path, per team, per bot, or per user, auto-install on new Claude Code sessions, stay synchronized — everyone gets the same tools automatically.
Supported Clients
Client Status Notes
Claude Code ✅ Supported Full support for all asset types
Cline ✅ Supported Skills, rules, workflows as commands, MCP servers, hooks
Codex ✅ Supported Skills, commands, MCP servers
Cursor ✅ Supported Skills, rules, commands, MCP servers, hooks
GitHub Copilot ✅ Supported Skills, rules, commands, agents, MCP servers, local hooks
Gemini (CLI/VS Code) ✅ Supported Skills, rules, commands, MCP servers, hooks
Gemini (JetBrains) ✅ Supported Rules, MCP servers only (no commands/hooks)
Gemini (Android Studio) ✅ Supported Rules, MCP-remote only (HTTP, no stdio)
Kiro ✅ Supported Skills, rules, commands, MCP servers
Openclaw ✅ Supported Skills, rules, commands
claude.ai (web) ✅ Supported Via the skills.new cloud relay
chatgpt.com (web) ✅ Supported Via the skills.new cloud relay
Roadmap
✅ Local, Git, and Skills.new vaults
✅ Claude Code support
✅ Cline support
✅ Cursor support
✅ GitHub Copilot support
✅ Gemini support
✅ Codex support
✅ Kiro support
✅ Openclaw support
✅ claude.ai and chatgpt.com support via the skills.new cloud relay
✅ Org, Team, Bot, Repository & Personal installation targets for all vault types
✅ Skill discovery - Use Skills.new to discover relevant skills from your code and architecture
✅ Analytics - Track skill usage and impact
RBAC and change request flow - Support a gated skill update flow
License
See LICENSE file for details.
Development
Click to expand development instructions
Documentation
Vault Spec - Vault directory structure
Manifest Spec - sx.toml source-of-truth format (assets, scopes, teams)
Lock Spec - Per-user resolved lock file
Scoping - Install targets and links to per-scope docs (orgs, repos, teams, users, bots)
Audit log - Event catalog, sx audit filters, storage format
Usage analytics - sx stats dashboard, JSON output, event format
Metadata Spec - Asset metadata format
MCP Spec - MCP server and query tool
Profiles - Multiple configuration profiles
Clients - Client support model and IDE vs CLI limitations
Cloud relay - Expose your vault to claude.ai and chatgpt.com via skills.new
Prerequisites
Go 1.25 or later is required. Install using gvm:
Install gvm
bash < <(curl -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
Install Go (use go1.4 as bootstrap if needed)
gvm install go1.4 -B gvm use go1.4 export GOROOT_BOOTSTRAP=$GOROOT gvm install go1.25 gvm use go1.25 --default
Building from Source
make init # First time setup (install tools, download deps) make build # Build binary make install # Install to GOPATH/bin
Testing
make test # Run tests with race detection make format # Format code with gofmt make lint # Run golangci-lint make prepush # Run before pushing (format, lint, test, build)
Releases
Tag and push to trigger automated release via GoReleaser:
git tag v0.1.0 git push origin v0.1.0
About
sx is a package manager for AI coding assistants
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Apache-2.0 license
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