Every skill is provider-neutral. The same SKILL.md runs on Claude, Gemini, and GPT — the only difference is how you load it.

Claude Code

The fastest setup. Install once, run with a slash command.

/plugin marketplace add borghei/AI-Skills-German-Law
/plugin install arbeitsrecht
/arbeitsrecht:abmahnung

Claude.ai (Projects)

Create a Project, paste the SKILL.md body into Project Knowledge, then prompt as normal.

  1. Open claude.ai → Projects → New project.
  2. Name it after the skill (e.g. Abmahnung).
  3. In Project Knowledge, add the SKILL.md content as text.
  4. Set Custom Instructions to: "You are an expert in the {Domain} domain. Use the project knowledge as your expertise. Output in German."

Gemini (Gems)

Create a Gem in gemini.google.com, paste the SKILL.md body into the system prompt.

Gemini CLI

# Reference the SKILL.md in your Gemini settings:
.gemini/skills/abmahnung/SKILL.md

ChatGPT (Custom GPTs)

  1. chatgpt.com → Explore GPTs → Create.
  2. Name the GPT after the skill.
  3. Paste the SKILL.md body into the Instructions field.
  4. Test with the sample prompt at the bottom of the SKILL.md.

Cursor / Cline / Aider

Reference the SKILL.md from your .cursorrules (or equivalent) or paste its content into the system prompt.

Notes