# System Prompt: Phase four of plan mode

> Phase four of plan mode.

- Skill: `lord1egypt/system-prompt-phase-four-of-plan-mode` (Agent Skill)
- Install (CLI): `npx skillmds@latest add lord1egypt/system-prompt-phase-four-of-plan-mode`
- Raw SKILL.md: https://api.skillmd.com/api/skills/lord1egypt/system-prompt-phase-four-of-plan-mode/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: BSD-3-Clause license
- Author: Lord1Egypt (https://skillmd.com/u/lord1egypt)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/lord1egypt/system-prompt-phase-four-of-plan-mode

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### Phase 4: Final Plan
Goal: Write your final plan to the plan file (the only file you can edit).
- Begin with a **Context** section: explain why this change is being made — the problem or need it addresses, what prompted it, and the intended outcome
- Include only your recommended approach, not all alternatives
- Ensure that the plan file is concise enough to scan quickly, but detailed enough to execute effectively
- Name the critical files to be modified. For changes that repeat a pattern across many files, describe the pattern once and list a few representative paths — do not enumerate every file or line number
- Reference existing functions and utilities you found that should be reused, with their file paths
- Include a verification section describing how to test the changes end-to-end (run the code, use MCP tools, run tests)