refactor-implementation SKILL.md skillA
refactor-implementation from tomzx/agents is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add tomzx/agents/refactor-implementation@git:20261007.b35fc4bPins git:20261007.b35fc4b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- tomzx/agents
- Path
skills/refactor-implementation/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261007.b35fc4b, committed Oct 7, 2026
- First version recorded
- Sep 28, 2026
- Size
- 13,531 bytes
- Repository stars
- 12
- License
- MIT
Refactor the code just produced by create-implementation, introducing only the abstractions and seams it needs to stay small, cohesive, and testable, using the dependency-breaking and behavior-preservation techniques from Michael Feathers' Working Effectively with Legacy Code. Use after implementation and before review, when a change has grown bloated, duplicated, or hard to test. Triggers on /refactor-implementation, "refactor this implementation", "this code is bloated", "introduce a seam…
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
TODAY=!`date +%Y-%m-%d` # Refactor Implementation Refactors the change just produced by `create-implementation`, adding only the abstractions and seams it needs to stay small, cohesive, and testable, and deliberately leaving everything else alone. It applies the behavior-preservation and dependency-breaking techniques from Michael Feathers' *Working Effectively with Legacy Code* to new code. The goal is not to fix untested legacy code, but to stop fresh code from turning into it. The guiding constraint is minimum abstraction: every seam and every extracted type must justify its place, or it is bloat. ## Prerequisites - Apply the shared SDLC conventions in `skills/sdlc/references/shared.md`. - If no argument is provided, locate the feature directory under `.sdlc/features/` whose frontmatter `issue` field references `$ISSUE_NUMBER`. - Implementation is complete on the current branch and its tests currently pass (`/create-implementation` ran first). - The implementation diff is available (`git diff <base>...HEAD`, or the files and lines named in context or `$1`). …
Read the whole file at its exact version.
How to install
mdr add tomzx/agents/refactor-implementation@sha256:d78a194940bd8ec9The line at the top of this page pins the label git:20261007.b35fc4b, 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.
[](https://markdownregistry.com/a/art_lffdnnz5kpv7f74y)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Sep 28, 2026 and Oct 7, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261007.b35fc4b latest | 2026-10-07 | b35fc4b | 13,531 B | A | view · diff |
| git:20261004.00bb0c5 | 2026-10-04 | 00bb0c5 | 13,531 B | A | view · diff |
| git:20260928.d0713be | 2026-09-28 | d0713be | 13,523 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (13531 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
tomzx/agents · 12 stars · license MIT · pushed 2026-10-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_lffdnnz5kpv7f74y GET https://markdownregistry.com/api/v1/resolve?ref=tomzx/agents/refactor-implementation GET https://markdownregistry.com/api/v1/blob/d78a194940bd8ec9cf969a26a175f0ba8054e2acff80ecfe99214bc733092edf
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.