Akan.js v3 connects APIs and screen interactions in Bun-based TypeScript apps to AI tools. It provides a server /mcp endpoint by default, reuses OAuth 2.1 and existing access controls, and runs screen agents under the user’s session and permissions. A new UI system and desktop support were also added. The team reported 10% higher throughput and startup time cut in half in M4 Pro tests, but this is not an independent comparison. The official repository describes confirmation cards for important actions and per-caller rate limits, making tool-exposure scope and approval settings priorities during migration.