About
The Hook-Intercept-Block skill provides a standardized architectural pattern for building custom slash commands within the Claude Code environment. By utilizing the UserPromptSubmit hook, developers can intercept user input and execute logic entirely within the local binary, returning a 'block' decision to signify that the command has been handled without needing a round-trip to the Claude API. This approach ensures deterministic outputs, zero API token costs for utility commands, and significantly faster response times for administrative tasks like resetting session states, toggling configurations, or local environment management.
