00 · donmai (どんまい): what you say when a teammate drops the ball. don't mind, next play.

The OSS agent runtime that takes it on.

One Go binary: a persistent daemon, a dispatch loop, and plugin-native MCP tools that run agent sessions against your repos, on your machine. MIT licensed. The same runtime powers Rensei in production.

brew install RenseiAI/homebrew-tap/donmai

View on GitHub Read the docs →

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01 · fig 1.0

fig 1.0rendered in-browserdemo data

donmai host status

Daemon: ready

Machine: demo-host

Version: 0.72.47

PID: 42531

Uptime: 6s

Sessions: 0 / 8

Projects: 0 allowed

Timestamp: 2026-09-27T18:16:34Z

donmai orchestrator --project demo

Donmai Orchestrator

=========================

Project: demo

Max concurrent: 3

Repo: Any

Dry run: false

Dispatched 1 agent(s):

demo-142 → claude · workarea wa-7c2

[session] demo-142 step qa: WORK_RESULT:failed (attempt 1/2)

どんまい. don't mind, next play.

[dispatch] demo-142: retry dispatched (attempt 2/2)

[session] demo-142 step qa: WORK_RESULT:passed

[audit] demo-142: attempt 2 recorded · every attempt on the record

fig 1.0 - a step fails, the loop retries, the audit line lands. demo data.

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02 · what ships

What ships: the daemon, the dispatch loop, the MCP tools.

A daemon that holds the fleet

Runs under launchd or systemd, enforces capacity caps, and drains, pauses, or resumes sessions on command.

A dispatch loop that owns the retry

Takes a backlog issue to a worktree to an agent session, applies your retry policy, and records every attempt.

Plugin-native MCP tools

17 Linear and 6 code-intelligence tools from the @donmai/* TypeScript packages; the binary wires them to agents as stdio MCP servers and ships the 6 code ops as native CLI subcommands.

A typed workflow grammar

Zod-validated YAML v2 contracts, published in @donmai/core. The durable executor that runs them at scale is the platform side: see the boundary.

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03 · the boundary

Where OSS ends and the platform begins.

oss · mit

daemon
dispatch loop
MCP tool plugins (17 Linear + 6 code-intelligence; code-intelligence npm publish pending, the code ops ship native in the binary)
typed YAML workflow grammar and validation
provider plugin contract + capability matrix docs (verified-tier probing runs on the platform)
architectural intelligence (repo assessment)

platform · rensei

~60 concrete workflow nodes
durable executor
visual editor
Cedar policy
audit chain
routing intelligence

No asterisks. The contract is the docs.

The daemon pairs with any orchestrator endpoint you point it at, including a self-hosted one, or runs solo on a local file queue; the setup wizard offers both. Standalone-mode documentation is in progress.

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04 · install

Four commands to a running daemon.

brew install RenseiAI/homebrew-tap/donmai
donmai host setup
donmai host install
donmai host status

donmai is 0.x preview; APIs may change between minor releases.

Full install guide →

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05 · open

Open source, with the history to prove it.

current release: v0.73.4

donmai is MIT licensed. Issues, pull requests, and the full release history live on GitHub.

donmai is what you say when a teammate drops the ball. The runtime treats failure as the default condition.

View on GitHub

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