A ClaudSkills SKILL.md is just Markdown — the same content runs in adjacent AI coding tools with a small format conversion. The 2026 ecosystem has converged on a handful of rule-file formats; AGENTS.md is now an open standard adopted by the Agentic AI Foundation and read by Codex, Cursor, Windsurf, Gemini CLI, and Copilot, while Cline / Roo Code use their own modern directory formats. Pick the tool you're using and the page shows how to port a skill in under five minutes.
the AI code editor
Rule file: .cursor/rules/<rule-name>.mdc
the open-source VS Code AI agent
Rule file: .clinerules/<rule-name>.md
the Cline fork with multi-mode personas
Rule file: .roo/rules-<mode>/<rule-name>.md
the Codeium AI editor
Rule file: .windsurfrules (project root) or AGENTS.md
OpenAI's coding agent (the 2026 reboot)
Rule file: AGENTS.md (project root)
the multi-model VS Code / JetBrains assistant
Rule file: ~/.continue/config.json (global) or .continue/config.json (project)
If you're targeting one tool, click its card above and follow the conversion. If you want a file that works in multiple tools without rewriting, use AGENTS.md at your project root — it's the open standard supported by Codex, Cursor's Agent mode, Windsurf, Gemini CLI, and Copilot in 2026.
If you want the canonical source-of-truth format that Claude Code itself reads, keep ~/.claude/skills/<slug>/SKILL.md — and use a small build step (a Makefile, a shell one-liner, or the ClaudSkills desktop app's export feature when it ships) to materialize the body into whichever other tool's rules file you need.
ClaudSkills indexes 69,000+ SKILL.md files. The content of each is portable to every tool above — the rule-file format is a different question from where the skill content originates. Browse the full catalog, pick a skill, and the integration page for your editor of choice shows how to drop it in.
SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.