Trail of Bits ships agentcov: code coverage for what AI coding agents read
Trail of Bits' agentcov brings gcov-style coverage to AI coding agents: it hooks Codex, Claude Code, and Pi sessions to record every line an agent actually reads, then renders per-line read counts as LCOV, gcov, JSON, and HTML heatmaps. Unread files show up as zero coverage, and unparsed read events get audited instead of silently dropped, so security teams can finally see what agents touched during a task.