# Feature Implementation

> Implement production features end to end, including integration, error states, tests, documentation, and verification.

- Skill: `nafeeur/feature-implementation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add nafeeur/feature-implementation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/nafeeur/feature-implementation/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: nafeeur (https://skillmd.com/u/nafeeur)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/nafeeur/feature-implementation

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# Feature Implementation

- Convert the request into observable acceptance criteria.
- Inspect adjacent implementations and reuse established types, APIs, styling primitives, logging, and test patterns.
- Implement the smallest coherent vertical slice; wire it into real navigation, configuration, persistence, and runtime paths.
- Remove stubs, demo-only data, dead toggles, and silent catches in touched paths.
- Test success, invalid input, cancellation, timeout, empty state, and recovery paths.
- Run the narrowest relevant formatter, static checks, tests, and build before reporting completion.