Mason
Preserve why your code was built this way.
Record the reason · Review the lesson · Surface applicable guidance · Reconsider it as code changes
Mason preserves reviewed engineering reasoning with your repository, so future maintainers and coding agents can retrieve the evidence behind consequential decisions. Record workarounds, rejected approaches and constraints while their reasons are available; revisit them when the underlying code changes.
Get started
Install on macOS or Linux:
curl -fsSL https://github.com/adrianczuczka/mason/releases/latest/download/install.sh | shWindows PowerShell:
irm https://github.com/adrianczuczka/mason/releases/latest/download/install.ps1 | iexNo Node or npm required. Git is required. The installer configures PATH for Bash, Zsh, and Windows. Platform details · npm installation
New standard standalone installs update automatically in the background. Updates activate on a future MCP launch after existing Mason MCP servers exit. Run mason updates to inspect or change this preference. Existing installations require one manual upgrade and mason updates enable. Update controls






