Planning copilot is a coding proxy service that writes correct preconditions for code and provides an executable plan at once. It is compatible with multiple coding proxies such as Claude Code. There are two default built-in templates and they can be customized. New plan sessions can be started through Q&A to generate plans, which can be viewed at blueprint//plan-.md. Plans can also be refined in the chat. Ask "What are the unsolved problems" to find the gaps. Creating a GitHub account can help with the development of imbue-ai/blueprint.