Legacy-Code-Migrator for ChatGPT

io.github.evozim/legacy-migrator

Automated code modernizer converting legacy logic to ESNext.

client:ChatGPT transport:sse

Install Legacy-Code-Migrator in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://legacy-migrator-mcp.vercel.app/api/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs