create-feature

create-feature is a command for Claude Code from oxygen-fragment/claude-modular. It costs 0 tokens per session (606 once invoked), scanned A, original, MIT.

A full workflow for building a software feature, including a feature branch, implementation, tests, documentation, and quality checks.

In plain words
What is it for?
Use it to scaffold and implement features, create unit, integration, and end-to-end tests, update API or user documentation, and run linting, security, and performance checks.
Why use it?
It groups the common development steps together so new functionality is less likely to be added without tests, validation, or supporting documentation.

Command for Claude Code

Install

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.

agentmods
npx agentmods add commands/oxygen-fragment/claude-modular/create-feature
Clone the repo
git clone --depth 1 https://github.com/oxygen-fragment/claude-modular

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for create-feature

README.md
[![agentmods](https://agentmods.dev/badge/commands/oxygen-fragment/claude-modular/create-feature.svg)](https://agentmods.dev/commands/oxygen-fragment/claude-modular/create-feature)
Your own site
<a href="https://agentmods.dev/commands/oxygen-fragment/claude-modular/create-feature"><img src="https://agentmods.dev/badge/commands/oxygen-fragment/claude-modular/create-feature.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 606 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What 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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00606
Opus 5 $0.00000 $0.00303
Sonnet 5 $0.00000 $0.00121
Haiku 4.5 $0.00000 $0.00061

Measured 5d ago against content hash 0e2285029588, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-feature 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 5d 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.

.claude/commands/project/create-feature.md · 88 lines

What it actually says

Create Feature Command

2. **Branch Management**
   - Create feature branch: `feat/[feature-name]`
   - Set up branch protection if needed
   - Link to issue tracker (Linear, GitHub Issues)

3. **Core Implementation**
   - Create main feature files following project conventions
   - Implement core functionality with proper error handling
   - Add input validation and security checks
   - Follow established patterns and style guides

4. **Test Implementation**
   - Generate unit tests for all new functions
   - Create integration tests for feature workflows
   - Add end-to-end tests for user-facing features
   - Ensure minimum coverage thresholds are met

5. **Documentation**
   - Update API documentation if applicable
   - Add inline code documentation
   - Create user-facing documentation
   - Update changelog and migration guides

6. **Quality Assurance**
   - Run linting and formatting tools
   - Execute full test suite
   - Perform security scanning
   - Validate performance requirements
# Expected structure created:
# - feat/user-authentication branch
# - src/auth/authentication.{js,ts,py,go}
# - tests/auth/authentication.test.{js,ts,py,go}
# - docs/auth/authentication.md
# - Updated API documentation
```

```bash
# With additional options
/project:create-feature payment-processing --type=service --framework=express

# Creates service-specific structure:
# - services/payment/
# - middleware/payment-validation.js
# - routes/payment.js
# - tests/payment/
```
Changes

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.

  1. 5d ago First seen · 88 lines · 0 tokens per session scan A 0e2285029588

Subscribe to this mod's changes

create-feature is a command published in the GitHub repository oxygen-fragment/claude-modular (283 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 606 tokens. 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 2026-08-30.