Icarus indexes refused pull requests to answer why code is the way it is.

A free-alpha macOS app plus GitHub extension and MCP server that answers "why" questions from a repo's own pull requests and issues, shows the evidence, and says nobody wrote this down when nobody did (Icarus). The insight underneath: merged PRs leave commits but refused ones leave nothing, so git log, git blame and the working tree are blind to every change a team tried and closed. The maker is explicit that it doesn't write code, which puts it above Cursor and Claude Code rather than against them.