expo-motion SKILL.md skillA
expo-motion from bjornmelin/dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add bjornmelin/dev-skills/expo-motion@git:20260908.2a5535ePins git:20260908.2a5535e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- bjornmelin/dev-skills
- Path
skills/expo-motion/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260908.2a5535e, committed Sep 8, 2026
- First version recorded
- Jul 9, 2026
- Size
- 13,709 bytes
- Repository stars
- 8
- License
- none declared
Expo and React Native motion for iOS, Android, and web: Reanimated 4, worklets, gestures, transitions, Skia, accessibility, and manifest-driven validation.
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
# Expo & React Native Motion — Master Skill Production motion for Expo and React Native apps on iOS, Android, and web. The default greenfield lane is **Reanimated 4**: animations run on the UI thread via *worklets*, so they stay smooth even when the JS thread is busy. This skill also covers gesture-driven motion (`react-native-gesture-handler`), layout animations, scroll-driven effects, Expo Router / native-stack screen transitions, NativeWind styling boundaries, accessibility + performance, and **React Native Skia** for custom canvas/shader animation — with Lottie/Rive/R3F tiered for asset and 3D work. **Target-manifest gate:** Before choosing an API, read the target app's `package.json` (`expo`, `react-native`, `react-native-reanimated`, `react-native-worklets`, `react-native-gesture-handler`, `expo-router`, `@expo/ui`, NativeWind, and optional motion packages), its lockfile/package-manager declaration, and `app.json`/`app.config.*` (`newArchEnabled`, plugins, and platform settings). Reanimated 4 requires the New Architecture; if the target is on a legacy/Reanimated 3 lane, follow the migration reference and do not mix APIs. Worklets are a separate package; Expo's preset… …
Read the whole file at its exact version.
How to install
mdr add bjornmelin/dev-skills/expo-motion@sha256:096e62f448825c0eThe line at the top of this page pins the label git:20260908.2a5535e, 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_2ys3uhccnvjpca5b)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Jul 9, 2026 and Sep 8, 2026, about one every 15 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260908.2a5535e latest | 2026-09-08 | 2a5535e | 13,709 B | A | view · diff |
| git:20260801.e6c9836 | 2026-08-01 | e6c9836 | 12,030 B | A | view · diff |
| git:20260728.3aaa44b | 2026-07-28 | 3aaa44b | 10,295 B | A | view · diff |
| git:20260726.b67ae30 | 2026-07-26 | b67ae30 | 10,375 B | A | view · diff |
| git:20260709.7d6b098 | 2026-07-09 | 7d6b098 | 10,764 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 (13709 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
bjornmelin/dev-skills · 8 stars · license none declared · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2ys3uhccnvjpca5b GET https://markdownregistry.com/api/v1/resolve?ref=bjornmelin/dev-skills/expo-motion GET https://markdownregistry.com/api/v1/blob/096e62f448825c0ec62879369abbd39e1b7e3ca731fd7b0c9ac25465add20af6
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.