feature-implement

feature-implement is a command for Claude Code from matteocervelli/llms. It costs 11 tokens per session (107 once invoked), scanned A, original, MIT.

A command that implements a new software feature described in a GitHub issue. It guides the work through requirements, design, approval, coding, validation, and deployment.

In plain words
What is it for?
Use it to turn a numbered GitHub issue into an implemented and validated feature through a defined development workflow.
Why use it?
It organizes feature work into clear stages so important decisions and checks are not skipped. It can also create a branch for the changes.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: positional $N argument.

Good fit Use it to turn a numbered GitHub issue into an implemented and validated feature through a defined development workflow.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/matteocervelli/llms/feature-implement
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.

Clone the repo
git clone --depth 1 https://github.com/matteocervelli/llms

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 feature-implement

README.md
[![agentmods](https://agentmods.dev/badge/commands/matteocervelli/llms/feature-implement/github.svg)](https://agentmods.dev/commands/matteocervelli/llms/feature-implement)
Your own site
<a href="https://agentmods.dev/commands/matteocervelli/llms/feature-implement"><img src="https://agentmods.dev/badge/commands/matteocervelli/llms/feature-implement/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for feature-implement

Your own site · 80×15
<a href="https://agentmods.dev/commands/matteocervelli/llms/feature-implement"><img src="https://agentmods.dev/badge/commands/matteocervelli/llms/feature-implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 11 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 107 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00011 $0.00107
Opus 5.5 $0.00004 $0.00043
Sonnet 5.5 $0.00002 $0.00021
Haiku 4.5 $0.00001 $0.00011

Measured 1mo ago against content hash d5c320b14ab1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

feature-implement 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 1mo 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.

.archive/claude-v1/commands/feature-implement.md · 13 lines

What it actually says

Implement Feature from GitHub Issue

Implement feature from GitHub issue #$1 following the prompt @./.claude/prompts/feature-implementer-main.md prompt.

The main orchestrator guides six phases: Requirements Analysis → Design & Planning → User Approval → Implementation → Validation → Deployment.

Branch creation: ${2:-true}

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. 1mo ago First seen · 13 lines · 11 tokens per session scan A d5c320b14ab1

Subscribe to this mod's changes

feature-implement is a command published in the GitHub repository matteocervelli/llms (25 stars, last pushed 5mo ago), licensed MIT. It adds 11 tokens to every session and 107 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-09-01.