checkpoint-manager

The spec-builder skill transforms vague project ideas into detailed specifications through guided discovery. It helps developers define requirements and create actionable specs before using autonomous coding tools. Use it when you need to clarify project scope or prepare for autonomous-master execution.

The browser-e2e-tester skill runs automated browser-based end-to-end tests to verify feature implementation meets acceptance criteria. It validates user flows and feature completion through programmable test execution, supporting both individual feature tests and full test suites. Developers should use this skill when they need to verify features in a browser environment during development or before deployment.

This skill manages the complete lifecycle of autonomous coding sessions, handling session creation, resumption, and type detection (initial vs. continuation). It provides tools for auto-continuation between sessions and includes a session manager for running prompts with Claude models. Use it when starting new coding projects, resuming previous work, or managing seamless transitions between autonomous coding sessions.

The initializer-agent is a first-session tool for setting up autonomous coding projects. It handles project initialization, generates comprehensive feature lists, and scaffolds project structure based on specifications and tech stacks. Use it when starting new projects to establish foundations and environment setups.