Mula - AI-powered coding tutor

Mula is designed to help you learn how to code. Our tutor agent can generate coding lessons with interactive, in-flow exercises to help you learn by doing without leaving the app. Every session is tailored to your progress and learning needs.

This is currently a personal-use app — clone and run it yourself. Not distributed as a binary.

Prerequisites

• Bun
• Rust toolchain (for Tauri — see Tauri prerequisites)
• An Anthropic auth source (see below)

Setup

gh repo clone chaychun/mula
cd mula
bun install
bun run tauri:build

The first launch pops the auth modal if no credential is found. Pick one of the two paths below.

Authentication

Two credential sources, resolved in this order:

1. Stored API key override — paste an Anthropic Console API key into the in-app auth settings. Stored in the OS app data dir with 0600 permissions. Active until you clear it.
2. Local Claude Code CLI — if claude is installed and signed in, the app inherits its session via the system keychain (macOS) or ~/.claude/.credentials.json (Linux/Windows). No paste required. This will pull from your subscription's programmatic usage pool. Learn more.

Credentials are managed entirely from the in-app Anthropic authentication modal. There is no .env mechanism — keys never live in your shell environment or the repo.

Using the local Claude Code CLI (default)

1. Install Claude Code: https://docs.claude.com/en/docs/claude-code/setup
2. Sign in: claude login
3. Launch the app — banner shows Connected via local Claude Code.

Using an Anthropic API key

1. Create a key in the Anthropic Console.
2. Open the auth modal, paste the key (sk-ant-api…), click Save & verify.
3. Clear it any time to fall back to the CLI.