Inngest Has a Free API That Orchestrates Serverless Functions With Events and Steps

Inngest: multi-step serverless workflows with per-step retries, sleep, and event-driven triggers.

const onSignup = inngest.createFunction(
  { id: 'signup-flow' },
  { event: 'app/user.signup' },
  async ({ event, step }) => {
    await step.run('welcome-email', () => sendEmail(event.data.email))
    await step.sleep('wait', '1d')
    await step.run('tips', () => sendTips(event.data.email))
  }
)

Each step retries independently. Sleep for days between steps. Free: 5,000 runs/month.

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