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Step by step setup:

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Part 1: The Slack side

1

Go to Slack API Apps

• Head over to: https://api.slack.com/apps
• Click Create an App
• Click From Scratch

2

Give it a name

• For example: Base44 Notifications
• Pick your workspace

3

Set up Incoming Webhooks

• In the sidebar, open Incoming Webhooks
• Toggle Activate Incoming Webhooks to On

4

Connect Webhook to Workspace

• Scroll down on this same page
• Click on Add New Webhook to Workspace
• Select the channel where messages should appear
• Click Allow

5

Copy your Webhook URL

• Your webhook URL should look similar to this: https://hooks.slack.com/services/T000/B000/XXXXXXXX
• Keep this handy, you’ll use this in Base44 when it prompts you for the secret.

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Part 2: The Base44 side

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Option A: Ready-made integration (for new apps)

1

Open the integrations catalog

• In Base44 click on Integrations
• Select Slack
• Select Use this Integration

2

Paste your secret

• When prompted, paste your SLACK_WEBHOOK_URL
• Ready-made integrations automatically enable backend functions so you don’t need to manually switch this on

3

Create your app

• Type out your first prompt to scaffold the app
• Sample prompt: Build me a to-do list app "Todo" that will send a message to my Slack channel every time a task is created or the status changes to Done, In Progress, or Deleted.

4

Test your app

• Creating or updating your tasks should now post a message into your Slack channel
• If nothing appears, double-check:
  • The webhook belongs to the correct channel
  • The secret is saved correctly
  • Posts are happening from the backend only (not the browser)

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Option B: Instant integration (connecting Slack to an existing app)

1

Open your existing app

• Here’s the prompt that we typed out in the AI chat to build our sample app:
  Build me a to-do list app called Todo

2

Enable backend functions

• Go to your Dashboard → Settings → App Settings → switch on Backend Functions

3

Prompt the AI Chat to connect your app to Slack

• Sample prompt for the AI Chat: Connect this app to Slack using an Incoming Webhook. Ask me for SLACK_WEBHOOK_URL and save it as a Secret. Post to Slack from the backend only.

4

Paste your webhook URL

• When prompted by the AI Chat, click on Update SLACK_WEBHOOK_URL secret
• Then paste your webhook URL into the pop up window

5

Wire the events

• Tell the AI chat how you want your app to use Slack
• Sample prompt:

Hook the backend Slack post into the todo lifecycle:- On create: post "New task: {title}"- On status change: post "Task status updated: {title} -> {status}"- On delete: post "Task deleted: {title}"Use the channel from SLACK_WEBHOOK_URL. If a call fails, show a small toast and continue.

6

Test your app

• Create a task.
• Change its status to In Progress, then Done.
• You should see the corresponding messages land in your Slack channel.

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Troubleshooting

• No message in Slack → The webhook might point to a different channel. Create a new one for the right channel.
• Frontend errors (401 / CORS) → Don’t call Slack directly from the browser. Always post from the backend.
• Webhook rotated or revoked → Paste the new webhook into Base44 Secrets.
• Workspace blocks custom apps → Ask a workspace admin to approve your Slack app.

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Common use cases for the Base44 × Slack integration

• Task tracking: Post a message every time a new task is created, updated, or completed in your app.
• Team notifications: Send alerts to a shared channel when key events happen—like a status change to Done, In Progress, or Blocked.
• Error reporting: Have your backend send a Slack message when something fails (for example, a payment or data sync) so you can react quickly.
• Daily summaries: Combine with Zapier or another integration to push a morning digest into Slack, showing todos created or completed yesterday.