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Kitbay
Skill

agent-development

Apache-2.0Updated on Nov 11, 202646,808GitHub starsIncludes scripts

A skill in Anthropic's plugin-dev plugin for creating subagents inside Claude Code plugins.

InstallRepository Checked on Nov 16, 2026

What the skill teaches

A skill in Anthropic's plugin-dev plugin for creating subagents inside Claude Code plugins. Each agent is a Markdown file in the plugin's agents folder whose YAML frontmatter sets a name, a description that says when to trigger it, the model and a colour, plus an optional tool list kept to what is needed, and whose body is the system prompt. The skill explains how to write trigger scenarios and second-person prompts with a role, process, output format and edge cases, offers AI-assisted or manual creation, and includes scripts that validate an agent file and test whether it triggers, with full examples and reference files.

Capabilities

  • Write agent files for Claude Code plugins
  • Describe when an agent should trigger
  • Validate an agent file's structure
  • Test whether an agent triggers