Slack

Buck listens for mentions in Slack channels and threads, with platform support for message handling, thread continuity, and interactive messages.

How to use

Mention @buck in any channel where the Slack app is installed:

Buck — engineering

@buck investigate the spike in 500 errors on the payments service

@buck implement the caching layer described in AD-1234

Thread continuity

Buck maintains conversation context within a Slack thread. Follow-up messages in the same thread are routed to the same ADK session, so you can have multi-turn conversations:

User: @buck what does the payment webhook handler do?
Buck: [explains the handler]
User: can you add retry logic to it?
Buck: [creates a Jira ticket and dashboard session, dispatches a plan session]

Buck uses a session index to track thread-to-session mapping.

Interactive messages

Buck posts Block Kit interactive messages with buttons, select menus, and date pickers. When you interact with these (click a button, choose an option), your selection is routed back to the agent session as a follow-up message.

Common interactive patterns:

Buck — plan approval buttons (approve, reject, request changes)

Multimodal support

Buck can process images shared in Slack threads. Images are:

Downloaded via the Slack bot token
Uploaded to S3 for permanent storage
Sent to Claude as inline image data for visual understanding
Included as URLs in any dashboard sessions created from the conversation

Supported formats: JPEG, PNG, GIF, WebP.

Slash commands

Command	Description
`/debug`	Returns the session ID, trace count, and a link to PostHog AI traces for the current session