transitions.dev

transitions.dev is a UI transition library and AI agent that adds crafted animations to web applications.

Transitions.dev provides a collection of essential UI transitions for web applications that users can copy and paste or use with coding agents via a skill. The platform includes a library of over 43 crafted transitions ready to drop into projects. An AI agent scans codebases, scores motion from 0 to 100, and generates fixes as pull requests or diffs. A local and deterministic command handles the scoring without requiring AI or an account. Additionally, an action can score pull requests and block merges if motion quality drops.

transitions.dev at a glance

Best for: Designer, Software engineer
Runs on: Web
Pricing: Free
Released: April 2026
Category: AI coding tool
Website: transitions.dev

Key features

Collection of 43+ crafted UI transitions
Copy and paste transition code
Coding agent skill integration
Codebase motion scanning and scoring
Deterministic local motion scoring
Fixes generated as diffs and pull requests
Pull request score gate to block merges

Use it for

Add crafted UI transitions to web applications
Score codebase motion quality from 0 to 100
Fix UI animation issues with pull requests

Alternatives to transitions.dev

Libraries.dev — Prompt-based UI libraries that coding agents can install and configure directly
UI Skills — Curated skills for building polished frontend interfaces.
AG-UI — Standardizes agent-user interactions and generative UI for applications.
Amicro — Add lightweight and tree-shakeable micro-interactions with a single CLI command.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Skisso — Generates exact CSS and text diff patches for coding agents directly from the browser
Code to Flow — Visualizes complex programming logic through interactive diagrams instantly.
Agentation — It translates clicks into CSS selectors and source paths for agents.
Motion2code — It gives coding agents vision tools and a frame comparison loop to prevent guesswork.
TRAE — It features an autonomous coding agent that drives the entire development process.
Magic MCP — Provides AI agents direct access to a catalog of 12,000+ React components.
Migrateflows — Convert OpenAI, Flowise, and Pipedream workflows directly into n8n format.

All transitions.dev alternatives