Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/launch52-ai/flutter-template/feature-initnpx skills add launch52-ai/flutter-template --skill feature-initgit clone --depth 1 https://github.com/launch52-ai/flutter-templateWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00051 | $0.01132 |
| Opus 5 | $0.00026 | $0.00566 |
| Sonnet 5 | $0.00010 | $0.00226 |
| Haiku 4.5 | $0.00005 | $0.00113 |
Grade A, and why
feature-init scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Feature Init - Initialize Feature Structure
Initialize a new feature with Clean Architecture folder structure and skeleton files. Creates the scaffold, then /domain and /data fill in the details.
When to Use This Skill
- Creating a new feature from scratch (after
/plan) - User asks to "create feature", "init feature", "scaffold feature", or "add new feature"
- Starting a new feature module
Dependency Rules
┌─────────────┐
│ Domain │ ← No dependencies (pure Dart, no Flutter)
└──────┬──────┘
│
┌───┴───┐
▼ ▼
┌──────┐ ┌──────────────┐
│ Data │ │ Presentation │ ← Both depend on Domain only
└──────┘ └──────────────┘
Data and Presentation must NEVER depend on each other.
Naming Conventions
| Component | Pattern | Example |
|---|---|---|
| Feature folder | snake_case | user_profile |
| Entity | {Feature} |
UserProfile |
| Repository interface | {Feature}Repository |
UserProfileRepository |
| Repository impl | {Feature}RepositoryImpl |
UserProfileRepositoryImpl |
| Model (DTO) | {Feature}Model |
UserProfileModel |
| State | {Feature}State |
UserProfileState |
| Notifier | {Feature}Notifier |
UserProfileNotifier |
| Screen | {Feature}Screen |
UserProfileScreen |
Commands
# Check all features and completeness
dart run .claude/skills/feature-init/scripts/check.dart
# Generate new feature (recommended)
dart run .claude/skills/feature-init/scripts/check.dart --generate feature_name
# Validate dependencies
dart run .claude/skills/feature-init/scripts/check.dart --validate feature_name
Workflow
1. Gather Requirements
Ask: Feature name (snake_case)? What does it do? What screens? Needs API?
2. Generate Scaffold
Use the script or templates.md to create skeleton files:
domain/entities/- Pure domain model (skeleton)domain/repositories/- Interface (skeleton)data/models/- DTO skeleton withtoEntity()/fromEntity()data/repositories/- Implementation skeletonpresentation/providers/- State + Notifier skeletonpresentation/screens/- Consumer widget skeletoni18n/- Localization template
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 125 lines · 51 tokens per session scan A 38c9a884fca2
feature-init is a skill published in the GitHub repository launch52-ai/flutter-template (2 stars, last pushed 6mo ago), licensed MIT. It adds 51 tokens to every session and 1,132 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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