Slack Integration

Send Langfuse notifications to Slack so your team can see prompt changes and alerts in the channels where you already coordinate releases, incidents, and product updates.

What the Slack app does

The Langfuse Slack app posts selected Langfuse events into Slack channels. Teams use it to keep prompt changes visible during development and to route alerts into operational channels.

You need a Langfuse account and project to use the Slack integration. Slack notifications are configured per Langfuse project.

• Prompt notifications: Get notified when prompt versions are created, updated, or deleted. Use this to review production prompt changes, coordinate releases, and audit prompt lifecycle events.
• Alerts: Send threshold breach and recovery notifications for your Langfuse alerts to Slack. Use this to surface latency, cost, score, or quality changes before they affect users.

Get started

Open the Slack integration

Navigate to your Langfuse project settings, open the Integrations section, and choose Slack.

Connect Slack

Click Connect Slack to start the Slack OAuth flow.

Add Langfuse to Slack

Click Add to Slack to continue to the Slack permissions screen.

Authorize Langfuse in Slack

Authorize Langfuse for your Slack workspace.

After installation, Langfuse redirects you back to the app.

Test the integration

Select a Slack channel and send a test message to confirm that Langfuse can post to your workspace.

Configure notifications

Choose what Langfuse should send to Slack:

• Configure prompt update notifications for prompt version creation, updates, deletion, labels, and tags.
• Configure alert notifications for warning, alert, recovery, and re-notification events.

FAQ