A few weeks ago I read that Anthropic bought Bun. I understood it was significant but didn’t get to dig deeper - now everything connects.
The Problem
I built a local agent with Claude Code that connects to my WhatsApp, email and calendar. I wanted to send it to a friend to try, asked Claude: how can a user who doesn’t know how to run terminal install this easily?
It suggested I turn it into an executable - one installation for everything, exactly what I wanted.
The problem: We used better-sqlite and that’s a native Node.js module, meaning there’s special installation for each operating system and the user needs to install a heavy compiler.
The Solution: Bun
We looked for a more convenient solution and Claude suggested using Bun:
It’s a new runtime with built-in sqlite, fast and modern, with small executable, fewer dependencies, built-in TypeScript, built-in Bundler, built-in .env support - in short, simpler and faster.
We did the migration and everything worked immediately.
The only thing needed is Bun installed on the computer, but in the executable the user doesn’t need to worry about that.
So Why Did Anthropic Acquire Bun?
Claude Code reached $1B revenue and Bun is its infrastructure. When your infrastructure is worth a billion - you protect it.
This also reinforces my choice to move to Bun despite it being new - it’s here to stay.
Now the agent and its tools run on Bun and easily become a single unit.