incremental-implementation

Implements features in thin, tested vertical slices with per-increment commits.

Updated Sep 15, 2026
One-click install
npx skills add https://github.com/Qiuyi-Hong/addyosmani-skills --skill incremental-implementation-qiuyi-hong
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: incremental-implementation
Source: https://github.com/Qiuyi-Hong/addyosmani-skills/tree/main/skills/incremental-implementation
Command: npx skills add https://github.com/Qiuyi-Hong/addyosmani-skills --skill incremental-implementation-qiuyi-hong

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Large features implemented in one pass produce bugs that are hard to locate, reviews that are hard to read, and rollbacks that are painful. This Skill enforces a disciplined implement-test-verify-commit cycle so every change lands as a small, working, independently revertable increment. ## Core Features & Use Cases - Increment Cycle: A repeatable loop of implement, test, verify, commit, then move to the next slice, keeping the codebase compilable at every step. - Slicing Strategies: Vertical slices for end-to-end functionality, contract-first slicing for parallel backend/frontend work, and risk-first slicing to de-risk uncertain components early. - Scope and Simplicity Rules: Guardrails against scope creep, premature abstraction, mixed-concern commits, and unflagged incomplete features. - Use Case: When building a task management feature, deliver it as four slices (create, list, edit, delete), each tested and committed separately, instead of one 500-line changeset. ## Quick Start Ask the agent to implement the next task from your plan incrementally, starting with just the database schema and API endpoint, running tests after each slice before touching the UI.

Frequently Asked Questions about incremental-implementation

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement a large feature incrementally?

Break the feature into thin vertical slices where each slice delivers working end-to-end functionality. For each slice, implement the smallest complete piece, run the test suite, verify the build, commit with a descriptive message, then move to the next slice.

What is vertical slice development in software engineering?

Vertical slicing builds one complete path through the stack per increment, such as database plus API plus UI for a single operation. Each slice leaves the system in a working, testable state rather than completing one layer at a time.

When should I use feature flags for incomplete work?

Use feature flags whenever a feature is not ready for users but you need to merge increments to the main branch. Gate the new code behind an environment-variable flag that defaults to off, so incomplete work stays hidden while slices land.

When is incremental implementation not needed?

Skip it for single-file, single-function changes where the scope is already minimal. The overhead of slicing only pays off when a change touches multiple files or exceeds roughly 100 lines before testing.

Why should refactors and features be in separate commits?

Mixing refactors with features makes both harder to review and debug, and complicates rollback. Separate commits keep each change focused on one logical thing and independently revertable.