migstr

migstr is a simple Nostr relay migration tool that downloads events from one or more relays and either prints them as NDJSON or pushes them to a destination relay. Current version 0.1.2, released as an experimental CLI tool. Key differentiators: extremely simple interface (single npx command), supports multiple source relays with automatic destination relay detection, and output to file or direct relay push. No dependencies beyond Node.js and npm.