replica-diff SKILL.md skillA
replica-diff from realtahailyas/reverse-engineer-app-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add realtahailyas/reverse-engineer-app-skills/replica-diff@git:20261021.9d48208Pins git:20261021.9d48208 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- realtahailyas/reverse-engineer-app-skills
- Path
skills/replica-diff/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261021.9d48208, committed Oct 21, 2026
- Size
- 4,099 bytes
- Repository stars
- 3
- License
- MIT
Compares an app clone against the original: a feature parity score from the feature matrix (weighted by must, should, could) with the missing list in build order, plus a screenshot layout diff that ignores colour so a rebrand does not count against you. Two standard-library Python tools. Use when the user says "how close is my clone", "compare it to the original", "what's missing", "parity check", "diff the screens", "is it ready", or after /replica-test.
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
# replica-diff Two tools in this folder, both standard-library Python, no installs: ```bash python3 parity.py replica/features.csv # feature parity + missing list python3 imgdiff.py replica/screens/S07.png replica/clone-screens/S07.png --out diff-S07.png python3 imgdiff.py a.png b.png --json > replica/diffs/S07.json # for parity.py --visual python3 parity.py replica/features.csv --visual replica/diffs/*.json --markdown > replica/parity.md ``` ## What parity means here **Parity means it does the same job, not that it looks the same.** The feature score is the number that matters: can a user do everything they could do in the original. The layout score checks structure (is the information in the same places, in the same hierarchy), because that is what makes a switcher feel at home. It deliberately ignores colour, because replica-brand changes every colour on purpose. Do not chase pixel parity with the original. Its exact look is its trade dress, and it changes before launch. ## Step 1: feature parity Make sure `replica/features.csv` is current: every row's `clone` column is `yes`, `partial` (with a note), `no`, or `skip` (with a reason). Then: ```bash …
Read the whole file at its exact version.
How to install
mdr add realtahailyas/reverse-engineer-app-skills/replica-diff@sha256:bd9fc956c347233fThe line at the top of this page pins the label git:20261021.9d48208, 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_4r2d7blqjwatm4bw)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Oct 21, 2026.
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 (4099 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
realtahailyas/reverse-engineer-app-skills · 3 stars · license MIT · pushed 2026-10-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4r2d7blqjwatm4bw GET https://markdownregistry.com/api/v1/resolve?ref=realtahailyas/reverse-engineer-app-skills/replica-diff GET https://markdownregistry.com/api/v1/blob/bd9fc956c347233fb17698fd5ed22caabfc0a35a210b90b9eea874f033ef1c30
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.