Breaks plans into 2-5 min tasks
obra
16 skills in the catalog
16 skills
Structured questioning before code
Task-by-task plan execution with checkpoints
RED-GREEN-REFACTOR enforcement
Skill for writing new Agent Skills properly
Use when starting any conversation - establishes how to find and use skills, requiring skill invocation before ANY response including clarifying questions
Use when completing tasks, implementing major features, or before merging to verify work meets requirements
TDD, git worktrees, code review, brainstorm-to-spec
Fresh subagent per task with two-stage review
Isolated git worktrees with safety verification
Use when facing 2+ independent tasks that can be worked on without shared state or sequential dependencies
Systematic debugging methodology: reproduce, isolate, trace to root cause
Use when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementation
Verifies tests, merge/PR/discard options
Use when about to claim work is complete, fixed, or passing, before committing or creating PRs - requires running verification commands and confirming output before making any success claims; evidence before assertions always
Strunk's Elements of Style as a skill