MCP Code Migration (miGrate)

Inspiration

Migrating existing codebases to new architectures is time-consuming and error-prone, particularly for enterprise-level systems with hundreds of components.

This made us think: What if developers could transition to a new framework with a single click? That led to miGrate - a code migration platform that automates the transformation from React to Next.js.

What it does

Converts React components to Next.js compatible components using AI
Allows users to fetch files from local paths or GitHub repos.
Lets users review and migrate selectively or batch process entire repos.
Packages and serves the converted codebase as a downloadable .zip.

How we built it

We built miGrate using:

Next.js (App Router) for the interactive frontend UI.
FastAPI to handle backend routes, repo cloning, and zip packaging.
Claude 3.7 Sonnet (via the Anthropics API) for intelligent code conversion.
MCP (Model Context Protocol) to power consistent model-to-data communication.

Challenges we ran into

We ran into several challenges while developing miGrate:

Ensuring Claude-generated code is extracted cleanly, especially from Markdown-formatted completions.
Handling deeply nested repos, different file formats, and real-world GitHub project inconsistencies
Managing temporary file storage and cleanup securely and efficiently.

Accomplishments that we're proud of

Built a working prototype that handles both single-file, multi-file migrations and entire GitHub repositories with ease.
Integrated a skip-typing animation that mimics live code generation for better UX.
Achieved stable full-repo migration