For developers and AI agents

Tell someone. Hear back.

WhooshBang is one API for messaging the people your software works for. Send on Telegram, Slack or email, ask a question with buttons, and read the answer when it comes.

Read the quickstart Sign in

In invited alpha. Sign-in is for invited accounts.

$ npm install @whooshbang/sdk
$ npx wb login
$ npx wb project create "Deploy alerts"
$ npx wb subscriber create me
$ npx wb send me "The deploy finished."
From an empty account to a message on your phone.

What it does

  • Sends where people already are

    Telegram, Slack or email. Send as WhooshBang with nothing to set up, or as your own bot, Slack app or domain.

  • Asks, then waits for the answer

    Ask someone to confirm, pick from up to six choices, or type a short reply. The first answer counts, so a double tap can't answer twice.

  • Shows what happened

    Every message keeps its history: accepted, sent or failed, and any answer. Read it in the dashboard or through the API.

Who it's for

  • Apps that notify their users

    Embed a settings panel in your app and your users choose where they hear from you. Your code sends to a user ID, never a phone number or a chat ID.

  • Agents and jobs that need a person

    Connect an MCP client, or call the API from a script or a cron job. Ask before doing something that matters, and carry on with the answer.

How to get in

WhooshBang is in invited alpha, and there's no public sign-up yet. If you have an invitation, sign in with the account it created. The docs are public, so you can plan an integration before then.

Sign in Read the docs