The OSS workflow runtime that takes it on.

Donmai is an open-source workflow runtime that runs, retries, and audits multi-step agent tasks on your machine. The same binary powers Rensei in production. MIT-licensed.

Don, the kitsune — Donmai mascot

Define workflows in code.

Typed, composable workflow definitions with zero config drift.

Local or cloud execution.

Run the same workflow on your laptop or in a cloud sandbox.

Plugin-native.

First-class plugin system. Linear in the box. GitHub CLI integration. Plugin SDK for custom tools.

Audit-ready by default.

Every step emits structured events. Compliance is built in, not bolted on.

Start in two commands.

brew install RenseiAI/homebrew-tap/donmai
donmai daemon setup
Full install guide →

Open source, built in the open.

Donmai is MIT-licensed. Issues, PRs, and discussions live on GitHub.