Slack

Connects to Slack workspaces via the Web API with support for host-orchestrated OAuth, letting you read and post messages, manage threads and reactions, upload and download files, query users and channels, handle bookmarks, and schedule messages for later. Ships as part of Mindstone's 35-connector monorepo with multi-workspace support baked in, so you can work across teams without credential juggling. Reach for this when you need an LLM to search conversation history, post updates to channels, or automate routine Slack workflows. Built on stdio transport and published under the @mindstone npm scope with provenance attestation and a hardened CI pipeline that enforces release-age cool-downs and pinned dependencies.