> **Source**: `../aid-development/SKILL.md` > > This file is a reference. The main skill definition is in the `.claude/skills/` directory.
Scanned 9/9/2026
Install to Claude Code
npx -y skills add ilandahan/AID --skill development --agent claude-codeInstalls into .claude/skills of the current project.
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# Development Phase Skill
> **Source**: `../aid-development/SKILL.md`
>
> This file is a reference. The main skill definition is in the `.claude/skills/` directory.
## Quick Reference
**Phase**: 4 - Development
**Focus**: Implementation with TDD, code quality
### Entry Criteria
- Tech spec phase completed and approved
- Architecture and APIs defined
- Data models specified
### Exit Criteria
- All features implemented
- All tests passing
- Code reviewed
- Ready for QA validation
### Key Deliverables
1. Production Code
2. Test Suite (>80% coverage)
3. Documentation
### TDD Cycle
```
Write Test → Run (Fail) → Implement → Run (Pass) → Refactor
```
## Cumulative Learnings
See `cumulative.md` for project-specific learnings captured by the memory system.
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