Agent/Skills/Dir/Compatibility

• Agent Skills Dir Compatibility

  • We really need something like a feature compatibility matrix
    • For JavaScript specifically, there were a few adjacent ecosystems:
      • ECMAScript Compatibility Table (kangax)
        • Famous for ES6/ES2015+ feature-by-feature support matrices.
        • Covered things like promises, generators, async/await, proxies, etc.
        • Much more granular/spec-oriented than Can I Use.
        • Referenced widely in the JS community.
      • MDN Browser Compatibility Data
        • Eventually became the underlying structured compatibility dataset used by many tools.
        • Covers JS, CSS, HTML, Web APIs, runtimes, etc.
      • Can I Use: Promises
        • Example of how Can I Use indexed individual JS features too.
  • We need something that has dimensions
    • dimensions like:
      • slash commands
      • MCP
      • skills
      • hooks
      • sandboxing
      • resumability
      • CI mode
      • streaming tool calls
      • multi-agent orchestration
      • structured plans
      • browser control
      • Git worktree awareness
      • offline support

  • Estimation of compatibility from ChatGPT for Agent/Skills/Dir .agent/skills specifically

    • Tool	Project .agents/skills/	User ~/.agents/skills/	Native skill dir	Notes
      Claude Code / Claude Agent SDK	Not found in current docs	Not found in current docs	.claude/skills/, ~/.claude/skills/	Docs only cite .claude/skills/ locations and plugin skills. (Claude Code)
      OpenAI Codex	Yes	Yes	.agents/skills/	Codex appears to use the open path directly rather than a .codex/skills authoring path. (OpenAI Developers)
      Gemini CLI	Yes	Yes	.gemini/skills/, ~/.gemini/skills/	.agents/skills/ is documented as an alias and has same-tier precedence. (Gemini CLI)
      OpenCode	Yes	Yes	.opencode/skills/, ~/.config/opencode/skills/	Also supports Claude-compatible .claude/skills/. (OpenCode)
      Warp	Yes	Yes	.warp/skills/, ~/.warp/skills/	Also scans many other vendors’ skill dirs. (Warp)
      Cursor	Needs deeper verification	Needs deeper verification	Cursor docs exist, but location details need direct extraction	Cursor has official Agent Skills docs, but the fetched page did not expose lines with directory search paths. (Cursor)