cast-skills CLI lets developers share project context across multiple AI coding tools

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A developer has released cast-skills, an open-source command-line tool designed to eliminate the repetitive task of re-explaining codebase rules and conventions to AI coding assistants at the start of each session. The tool uses the SKILL.md format to store project knowledge once and distribute it across popular AI tools including Claude Code, GitHub Copilot, Gemini CLI, Cursor, and Windsurf. Rather than loading a single large prompt every session, cast-skills progressively feeds agents only the relevant context they need for a given task. The tool includes three core skills: one for routing feature work through the correct module and workflow, one for bootstrapping a project skill tree by reading the repository, and one for generating human-readable explanations after significant code changes. Available via npx or npm and requiring Node 18 or above, the project is open source and hosted on GitHub under the handle pedrocastanha.

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