Plan Implementation

Use this skill when a change is too large, risky, or ambiguous to implement directly.

Native Integration

Use the active agent's native planning mechanism first, such as Codex subagents, Claude Plan mode, OpenCode Plan agent, or Cursor Ask/Plan/custom modes. This skill defines the content and acceptance criteria for the plan; it is not a replacement for native read-only planning controls.

Workflow

1. Inspect the system.

   • Read the relevant source, tests, docs, config, and existing patterns.
   • Identify public interfaces, ownership boundaries, and feedback loops.
   • Check CONTEXT.md and any ADRs when they exist.

2. Define the target behavior.

   • State the current behavior and desired behavior.
   • List in-scope and out-of-scope changes.
   • Name affected users, callers, commands, APIs, files, or workflows only when needed for implementation clarity.