Slack Agent

A Slack app that turns threads into Claude Managed Agent sessions. Your team mentions the bot in any Slack thread, and the agent picks up the conversation — answering questions, running sandboxed code, and persisting context across replies. Sessions survive disconnects: come back to the same thread tomorrow and continue.

Built on Claude Managed Agents with Modal Sandboxes as the self-hosted execution environment, so code runs in isolated containers — not on your servers.

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What you get

• Slack app installed in your workspace with the right scopes and event subscriptions
• Modal deployment of the webhook and sandbox image
• Anthropic workspace, agent, environment, and webhook fully wired
• Posted Claude Platform session links into Slack threads (so reviewers can see the full event trace)
• Tested end-to-end in a channel of your choosing

Tools / stack

• Claude Managed Agents — agent runtime + session lifecycle
• Modal Sandboxes — self-hosted code execution
• Slack Events API — bot tokens, app mentions, IM messages, assistant threads
• Python / FastAPI / uv — webhooks and config

Use cases

• On-call assistant that runs diagnostic commands in a sandbox
• Internal research agent your team can ask anything in Slack
• Code Q&A bot for engineering channels with executable verification

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See it built live

Add a Workshop (+$500) — your engineers watch me install it live, learning the patterns alongside the product. 4 hours, real work.