Engineering discipline for coding agents: size the work, keep every change on the record, verify against intent, never lose a session. Works in Claude Code, Codex, Cursor, and Gemini CLI.
Agent
Independent verification delegate. Checks finished work against what was actually asked, runs the tests, reports findings by severity. Never edits anything. Use before completing consequential work; run in the foreground.
Agent
Read-only discovery delegate. Investigates one bounded question and returns findings with sources and a recommendation. Never edits anything. Use for codebase exploration and external research; run in the foreground.