Executing Plans

Overview

Load plan, review critically, execute all tasks, report when complete.

Announce at start: "I'm using the executing-plans skill to implement this plan."

Note: Tell your human partner that Aegis works much better with access to subagents. The quality of its work will be significantly higher if run on a platform with subagent support (such as Claude Code or Codex). If subagents are available, use aegis:subagent-driven-development instead of this skill.

The Process

Step 1: Load and Review Plan

1. Read plan file
2. Review critically - identify any questions or concerns about the plan
3. If concerns: Raise them with your human partner before starting
4. If no concerns: Create TodoWrite and proceed

Step 1.5: Long-Task Checkpoint Setup

If the plan has multiple tasks, may span sessions, or includes architecture / contract / workflow changes:

1. Announce: "I'm using the long-task-continuation skill to keep this plan checkpointed and drift-aware."
2. Load aegis:long-task-continuation.
3. Create the initial checkpoint from the plan:
   • current todo
   • active task
   • completed tasks
   • evidence refs
   • blockers
   • next step
4. Before each task, restate the current checkpoint.
5. After each task, update checkpoint, evidence refs, and drift check.

Step 2: Execute Tasks

For each task:

1. Mark as in_progress

2. Follow each step exactly (plan has bite-sized steps)

3. Before any non-trivial source edit, run the plan's Pre-Edit Complexity Check or create a compact one:

   Pre-Edit Complexity Check:
   - Safer edit boundary:
   - Decision: edit-in-place | extract helper | add owner file | split task | pause for plan update
   

   If the check contradicts the plan's file boundary, pause and return to plan review instead of silently stuffing logic into an overloaded owner.

4. Run verifications as specified

5. Update TodoCheckpointDraft and DriftCheckDraft before marking the task completed

6. Mark as completed

Step 3: Complete Development

After all tasks complete and verified:

• Announce: "I'm using the finishing-a-development-branch skill to complete this work."
• REQUIRED SUB-SKILL: Use aegis:finishing-a-development-branch
• Follow that skill to verify tests, present options, execute choice

When to Stop and Ask for Help

STOP executing immediately when:

• Hit a blocker (missing dependency, test fails, instruction unclear)
• Plan has critical gaps preventing starting
• You don't understand an instruction
• Verification fails repeatedly

Ask for clarification rather than guessing.

When to Revisit Earlier Steps

Return to Review (Step 1) when:

• Partner updates the plan based on your feedback
• Fundamental approach needs rethinking

Don't force through blockers - stop and ask.

Remember

• Review plan critically first
• Follow plan steps exactly
• Don't skip verifications
• Reference skills when plan says to
• Stop when blocked, don't guess
• Never start implementation on main/master branch without explicit user consent

Integration

Required workflow skills:

• aegis:using-git-worktrees - REQUIRED: Set up isolated workspace before starting
• aegis:writing-plans - Creates the plan this skill executes
• aegis:finishing-a-development-branch - Complete development after all tasks