orchChain coding agents into resumable workflows

Write a plain TypeScript function. orch spawns Claude Code and Codex, passes typed data between steps, watches them in tmux, and resumes from exactly where you crashed.

Get started

What is orch?

API reference

Workflows are TypeScript

No YAML, no graph builder, no visual editor. Use if, for, while, await, and early returns. orch runs the function top to bottom.

Resumable by default

Every run() call is memoized by name. Crash, Ctrl-C, or CI timeout — orch resume re-runs only the steps that did not finish.

Multiple agents, one pipeline

claude() and codex() are first-class runners. Hand structured, typed data from one step to the next; run independent work in parallel.

Watch it work

Two-pane tmux mode shows a live status pane and the agent's transcript. Plain mode streams to stdout for CI and logs.

In one file

import { workflow, step, commit, claude } from 'orch'

const WORK = step.define('work', {
  agent: claude(),
  validate: gitDiffCreated(),
})

export default workflow('hello', async (run) => {
  await run(WORK, { prompt: 'Add a CHANGELOG.md with an Unreleased section' })
  await commit('docs: add changelog')
})

bash

orch run hello