Workflow SDK makes TypeScript and JavaScript functions durable. It persists workflow progress, retries failed steps, and provides built-in observability. Workflows can suspend without using compute while they wait.
Install the SDK in an existing project:
npm install workflow
Configure the integration for your framework. For example, with Next.js:
// next.config.ts import { withWorkflow } from 'workflow/next'; export default withWorkflow({});
Then start a workflow from an API route, Server Action, or other server-side code:
import { start } from 'workflow/api'; import { onboardUser } from './workflows/onboard-user'; await start(onboardUser, ['[email protected]']);
Run your app, then open the local observability UI in another terminal:
npm run dev
npx workflow web
Choose your framework in the getting-started guides.
Note
The workflow package includes its full documentation, so coding agents can
read version-matched guides locally from node_modules/workflow/docs.
For application-level completion and failure reporting, registerLifecycleHooks
from workflow/api registers handlers in the workflow executor's host startup.
Calling it inside a workflow or step throws. Check the
lifecycle hooks guide
for supported framework/deployment combinations and stream cleanup requirements.
Local development uses the bundled backend with no configuration. Deploy to Vercel for managed storage, queuing, scaling, and observability. To self-host, use the Postgres backend or implement a custom World.
The Worlds page lists maintainer-curated third-party Worlds, including self-hosted and managed options. Submit your World by updating the Worlds Manifest.
The Workflow SDK community lives on GitHub Discussions, where you can ask questions, share ideas, and show what you have built.
Contributions are welcome. Use issues and discussions to collaborate with the team and wider community. By participating, you agree to our Code of Conduct.
If you find a security vulnerability in Workflow SDK, disclose it responsibly instead of opening a public issue.
To participate in our Open Source Software Bug Bounty program, please email [email protected]. We will add you to the program and provide further instructions for submitting your report.