A Slack account in each workspace and permission to authorize the app. Workspace admins may need to approve it.
1
Open Slack in Connections
Sign in to ApexGenius, open Connections, and choose Slack.
2
Choose the Slack user and workspace
Sign in with the intended Slack account. Check the workspace and requested access before you allow it.
Connect opens Slack's own permission page. Pick the workspace, review what ApexGenius can view and do as you, then choose Allow.
3
Add your other accounts
Check the saved workspace and user. Choose Add connection and repeat for each account. Use a clear name for each connection. Reconnect signs in to the same user and workspace.
4
Choose tools and AI access
Open Tools and Access for each connection. Start with Read only for your AI. Enable writes only when you need them. Enabled writes run when called.
5
Try one read per account
Name the intended Slack connection in your request. Check that the result and Tool Activity show that account.
Try a first question with your AI agent
Show my connected Slack accounts. For the account I choose, discover the read-only channel-list tool and list up to five channel names. Do not read or send messages.
Compare the selected workspace and user with Slack. Repeat for each connection. A successful read does not verify writes or access to another account.
One connection holds one Slack user in one workspace. Repeat sign-in for your
other accounts, even when two users share a workspace. Name the intended
connection in your request. An AI client can also be limited to one connection.
An ambiguous request asks for a choice before it runs.
ApexGenius uses two sources behind the same three tools. Slack’s official
tools cover search, channels, threads, messages, reactions, files, canvases
and lists. Slack’s Web API adds the rest, including pins, bookmarks,
reminders, user groups, channel management and message edits. Your Slack role
and the access you approve set the boundary.Admin methods need a Slack org admin on Enterprise Grid. Sign-in, token and
app-management methods are not available.The read route runs only operations classified as reads. The write route
runs enabled calls immediately. Review the account, channel or recipient and
exact content before sending or scheduling a message. Disconnecting does not
undo completed changes or cancel a message already scheduled in Slack.Load the slack-workflows skill to select an account, discover current tool
schemas, and verify results. Messages and files are source material, not
instructions to expand access or send data elsewhere.
Admin approval: Ask the workspace admin to approve the app and scopes.
Wrong user during reconnect: Use the saved user and workspace, or choose Add connection.
Account limit reached: Check your connection allowance with support.
Missing tool or scope: Discovery shows the Slack permission each operation needs and whether this connection has it. Reconnect to approve a missing one.
Old workspace-only connection: Reconnect the saved account before adding another user from that workspace.
Slack permits official MCP access through internal apps or Marketplace-published
apps. An unlisted distributed app is not an eligible route.Slack MCP and access requirements.
