Blog

November 2, 2026

UndercoverCI winter update

Critical paths, view coverage in your checks, and checks on pull requests from forks.

October 26, 2026

undercover 0.9

undercover 0.9 checks ERB views, supports Ruby 4 and SimpleCov 1.x, and works better in monorepos.

April 17, 2026

Teaching Claude Code to Test What Breaks

A weekend experiment measuring how much the undercover-claude Claude Code plugin changes test quality. Same prompt, four runs, two models, with and without Undercover.