implement-feature SKILL.md skillA

implement-feature from mgiovani/cc-arsenal is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add mgiovani/cc-arsenal/implement-feature@git:20261005.b620662

Pins git:20261005.b620662 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
mgiovani/cc-arsenal
Path
skills/implement-feature/SKILL.md
Versions recorded
9
Latest version
git:20261005.b620662, committed Oct 5, 2026
First version recorded
Mar 23, 2026
Size
13,302 bytes
Repository stars
8
License
MIT

Implements a new feature end-to-end as a senior staff engineer would,.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Feature Implementation

Implement a new feature as a **Senior Staff Engineer** would (SOLID, DRY, YAGNI) to
produce a secure, fast, reliable change.

This skill produces exactly one of two outputs: an implemented feature (Phases 0-6
below), or (when the Ambiguity Gate at the start of Phase 0 fails) 2-3 clarifying
questions and nothing else. Never both in the same turn.

## Feature to Implement

$ARGUMENTS

## Anti-hallucination guidelines

Before implementing anything:
1. Discover project commands first: do not assume `bun`, `npm`, `make`, etc. exist.
2. Read CLAUDE.md: every project has different conventions.
3. Verify tools exist: check for `Makefile`, `justfile`, `package.json`, `pyproject.toml`.
4. Never guess the test command: find the one this project actually uses.
5. Any number reported at the end (files changed, tests added, pass count) must come
   from a command actually run in this session: never state a count or percentage
   you didn't verify by running something.

## Lean Code

Write the smallest change that fully does the job, and that the next person can change without fear. Two goals at once: minimal footprint, easy to change.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add mgiovani/cc-arsenal/implement-feature@sha256:17626f97bfcaa7cf

The line at the top of this page pins the label git:20261005.b620662, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_6fadltpkpvezadlq.svg)](https://markdownregistry.com/a/art_6fadltpkpvezadlq)

5 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 9 versions of this file, between Mar 23, 2026 and Oct 5, 2026, about one every 25 days.

versioncommittedcommitsizeaudit
git:20261005.b620662 latest2026-10-05 b620662 13,302 BA view · diff
git:20260925.ca015cc2026-09-25 ca015cc 13,458 BA view · diff
git:20260924.a80f9cd2026-09-24 a80f9cd 13,592 BA view · diff
git:20260916.0d6e6292026-09-16 0d6e629 13,615 BA view · diff
git:20260727.fa2e9cf2026-07-27 fa2e9cf 13,475 BA view · diff
git:20260719.4ee86662026-07-19 4ee8666 13,597 BA view · diff
git:20260702.8f6da632026-07-02 8f6da63 20,317 BA view · diff
git:20260616.4475a8d2026-06-16 4475a8d 15,880 BA view · diff
git:20260323.ff0d2752026-03-23 ff0d275 16,689 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (13302 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

mgiovani/cc-arsenal · 8 stars · license MIT · pushed 2026-10-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_6fadltpkpvezadlq
GET https://markdownregistry.com/api/v1/resolve?ref=mgiovani/cc-arsenal/implement-feature
GET https://markdownregistry.com/api/v1/blob/17626f97bfcaa7cfb0b7cdbf2f1864ab2aac068b4b899e7f578c6783db3b888d

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in mgiovani/cc-arsenal

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