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C1 provides identity governance for Mattermost. Integrate your Mattermost instance with C1 for unified visibility and governance over user access.

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Capabilities

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Gather Mattermost credentials

The connector token must belong to an account with the System Admin (manage_system) permission. Without it, Mattermost returns only open teams from the team list and reports a partial picture of teams, memberships, and roles. The connector’s validation step fails and reports the missing permission when the token is not a System Admin.
1
Sign in to Mattermost with a System Admin account, or use a bot account that has the System Admin role.
2
Create a Personal Access Token (under Profile > Security > Personal Access Tokens) or a bot account token (under System Console > Integrations > Bot Accounts). Personal Access Tokens may need to be enabled in the System Console first.
3
Copy the token value and note your Mattermost server URL (for example https://mattermost.example.com).

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Configuration fields

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Synced resource types

  • Users: Mattermost user accounts from /api/v4/users. Deactivated accounts are synced as disabled.
  • Teams: Mattermost teams from /api/v4/teams, modeled as groups.
  • Team memberships and roles: membership and elevated team-role assignments (such as team admin) from /api/v4/teams/{team_id}/members.

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Special notes

  • Provisioning is not supported in the current build; the connector performs read calls only.
  • The connector authenticates with a static bearer token (Personal Access Token or bot token).
  • Channels are not synced in the current build. The access boundary modeled here is team membership.
  • Account-level system roles (such as system admin) are recorded on the user profile rather than as separate access grants.

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Configure the Mattermost connector

Follow these instructions to use a built-in, no-code connector hosted by C1.
1
In C1, navigate to Apps > Connectors and click Add connector.
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Search for Mattermost and click Add.
3
Choose where to add the connector: Create a new app, or Add to an existing app (then select the app).If you’re creating a new app, choose whether to link it to an application discovered from your identity provider: select Yes and pick the IdP application, or No to continue with just the connector.
4
Set the connector’s Name and, optionally, a Description.
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Click the pencil icon next to Owners to choose who can configure and manage this connector.
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Click Add. The connector is created and its configuration page opens.
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Find the Settings area of the page and click Edit.
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Enter the Mattermost credentials:
  • Server URL: Your Mattermost server URL, such as https://mattermost.example.com.
  • API Token: A System Admin Personal Access Token or bot token.
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Click Save.
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The connector’s label changes to Syncing, followed by Connected. You can view the logs to ensure that information is syncing.
Done. Your Mattermost connector is now pulling access data into C1.