obra

obra/claude-session-driver

Hook

Runs when you submit a prompt, before the agent sees it, executing emit-event.cjs via node. From obra/claude-session-driver.

obra/claude-session-driver

Hook

Runs when a session ends, executing emit-event.cjs via node. From obra/claude-session-driver.

obra/claude-session-driver

Skill Claude CodeCodex

Use when acting as a project manager that delegates tasks to other coding-agent sessions (Claude Code, Codex, or Pi) - launch workers, assign them work, monitor progress, review their tool calls, and collect results.

obra/clank

Command

@skills/collaboration/brainstorming/SKILL.md.

obra/clank

Command

@skills/collaboration/executing-plans/SKILL.md.

obra/clank

Command

@skills/collaboration/writing-plans/SKILL.md.

obra/clank

Skill Claude CodeCodex

Hide implementation details behind interfaces - work at domain level (what), not implementation level (how).

obra/clank

Skill Claude CodeCodex

Class interfaces present one cohesive abstraction - don't mix domain logic with serialization, persistence, or unrelated concerns.

obra/clank

Skill Claude CodeCodex

Managing complexity is software's primary technical imperative - all other goals are secondary.

obra/clank

Skill Claude CodeCodex

Comment WHY code exists and non-obvious decisions, not WHAT code does (mechanics).

obra/clank

Skill Claude CodeCodex

Design in pseudocode first, iterate approaches, then translate to code.

obra/clank

Skill Claude CodeCodex

Try 2-3 different approaches before implementing - don't settle for first design you think of.

obra/clank

Skill Claude CodeCodex

Each routine does one thing and does it well - extract when routines have multiple responsibilities.

obra/clank

Skill Claude CodeCodex

Declare variables in smallest possible scope, initialize close to first use, minimize span and live time.

obra/clank

Skill Claude CodeCodex

Name code by what it does in the domain, not how it's implemented or its history.

obra/clank

Skill Claude CodeCodex

Choose names that fully and accurately describe what the variable represents.

obra/clank

Skill Claude CodeCodex

Refactor with tests first, one change at a time, never mix refactoring with bug fixes or new features.

obra/clank

Skill Claude CodeCodex

Flatten nested conditionals with early returns or table-driven methods - keep nesting depth under 3 levels.

obra/clank

Skill Claude CodeCodex

Use each variable for exactly one purpose - no hybrid coupling or hidden meanings.

obra/clank

Skill Claude CodeCodex

Check all external inputs for validity - garbage in, nothing out, never garbage out.

obra/clank

Skill Claude CodeCodex

Write comments explaining WHAT and WHY, never temporal context or history.

obra/clank

Skill Claude CodeCodex

Interactive idea refinement using Socratic method to develop fully-formed designs.

obra/clank

Skill Claude CodeCodex

Use multiple Claude agents to investigate and fix independent problems concurrently.

obra/clank

Skill Claude CodeCodex

Execute detailed plans in batches with review checkpoints.