Show HN: Sx – an open-source package manager for AI skills, MCPs, and commands

· open-source ai coding · Source ↗

TLDR

  • sx is an open-source CLI package manager for AI coding assistant assets: skills, MCP configs, slash commands, hooks, and agents, with scoped installs and lockfiles.

Key Takeaways

  • Follows npm/cargo manifest-and-lock pattern: sx.toml is the source of truth, per-user lockfiles are written to ~/<cache>/sx/lockfiles/.
  • Install scopes target org, team, repo, subpath, individual user, or bot identity (CI runners, agents) from a single vault.
  • Vault backends: local path, shared git repo, or hosted skills.new; profiles let you switch between vaults.
  • Works across Claude Code, Cursor, Cline, Codex, GitHub Copilot, Gemini, Kiro, plus claude.ai and chatgpt.com via a WebSocket cloud relay that keeps vault content local.
  • Audit and usage streams written to .sx/audit/YYYY-MM.jsonl and .sx/usage/YYYY-MM.jsonl; queryable with sx audit and sx stats.

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