Collaboration

Slack

Run Slack admin operations and drive end-user conversations with Dex — all from one app.

Dex connects to Slack via the Web API as a custom workspace app. It handles two jobs: (1) channel/user administration — invite, kick, list, look up, create channels and user groups — and (2) the Slack communication channel itself, so employees can DM Dex in Slack to open tickets, request access, and get IT help without ever leaving the workspace.

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What Dex does with Slack

Dex handles both admin workflows and employee self-service — all policy-guardrailed and audit-logged.

For admins (CoAdmin)

Invite, remove, and list members of any public or private channel
Create and archive channels, set topics and purposes
Look up users by email and resolve Slack user IDs for other workflows
List and manage user groups (@team mentions) including membership
Post messages, announcements, or incident alerts to any channel
Send broadcast notifications from automation workflows (e.g. license shortage, policy changes)
Audit every grant/revoke action via Dex activity logs and Slack action policies

For employees (self-service)

Chat with Dex directly in Slack — DM the bot or mention it in a channel to open a request
Receive approval prompts, ticket updates, and device alerts as Slack messages
Get proactive notifications when a licence, password reset, or access request changes state
Send Dex a Slack message like "I'm locked out" and have it triage and remediate end-to-end
Receive ephemeral DMs from Dex for sensitive items (MFA, credentials, signed links)

Just ask Dex

Your team types a request in plain language. Dex investigates, plans, and executes — with the right guardrails.

Admin prompts

>Add dan@acme.com and jen@acme.com to the #exec-ops channel
>Create a private channel called "incident-oct-12" and invite everyone in the @sre user group
>Kick all deactivated Entra users out of #all-company
>Post "Network maintenance tonight 10pm-12am PT" to #eng-announcements
>Look up the Slack user ID for marco@acme.com and DM him the new VPN instructions
>List every private channel marco@acme.com is a member of

Employee prompts

>My laptop is running slow, can you take a look?
>Request a Salesforce Pro licence for me — my manager is dana@acme.com
>I need access to the #finance-reports channel for the Q2 close
>Reset my Zoom password, I'm locked out
>Check the status of my onboarding ticket

Policy actions

Every action Dex can take on Slack is declared, scoped, and guardrailed. Admins control which apply, who approves them, and whether they're limited to self-service.

Action	What it does	Guardrails
`slack_channel_grant_access`	Invite a user to a Slack channel (conversations.invite)	approval
`slack_channel_revoke_access`	Remove a user from a Slack channel (conversations.kick)	approval
`slack_list_channels`	List public and private channels in the workspace	—
`slack_create_channel`	Create a new public or private channel	—
`slack_lookup_user`	Look up users by email or Slack user ID	—
`slack_post_message`	Post a message to a channel or DM a user	—
`slack_manage_user_group`	Create and update Slack user groups and their members	approval

How to configure Slack

Onboarding takes minutes. Dex validates your credentials before saving them.

Setup steps

1
Sign in to api.slack.com/apps as a workspace admin and click "Create New App" → "From a manifest".
2
Select your workspace and paste the Dex-provided Slack manifest JSON (Dex generates it during discovery). Click Next → Create.
3
Under Basic Information → Display Information, upload the Dex app icon and confirm app name.
4
Go to OAuth & Permissions → Install to Workspace → Allow. Copy the Bot User OAuth Token (starts with xoxb-).
5
From Basic Information → App Credentials, copy the Signing Secret and the App ID (starts with A).
6
In Dex, paste the Bot Token, Signing Secret, and App ID. Dex validates them by calling /auth.test and displays the resolved workspace name before saving.

Vendor documentation ↗

Credentials required

botToken: Bot User OAuth Token — starts with xoxb-, found at OAuth & Permissions after installing the app to your workspace
signingSecret: Signing Secret from Basic Information → App Credentials (used to verify inbound Slack events)
appId: App ID from Basic Information → App Credentials (starts with A, used by Dex to build manifest links)

Requirements

•Slack workspace admin (or Primary/Workspace Owner) rights to install a custom app
•Slack paid plan recommended — free plan limits private channel membership and user groups
•Slack Web API rate limits apply (Tier 2/3 endpoints ~20 req/min per method)
•Bot must be explicitly invited to private channels before it can post or manage membership
•For DMs to users, the bot needs im:write + users:read.email scopes (granted by the manifest)

Related integrations

See Dex run Slack

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