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An administrator turns Migma on once. Every member of your workspace can then use Migma from Claude without signing in or approving access themselves. Claude proves who each person is, and Migma gives them access to that workspace only. You need a Claude Team or Enterprise organization, and you must be an owner or admin of your Migma workspace.

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Set it up

1

Add Migma in Claude

As a Claude Owner or Primary Owner, add Migma as a connector for your organization with the URL https://migma.ai/mcp. Open the connector, then in Authentication click Set up on the Managed authorization row.
2

Copy the Issuer URL

Under Identity source, choose Claude-issued and copy the Issuer URL. It looks like https://identity.anthropic.com/issuers/....
3

Trust it in Migma

In Migma, select the workspace, then open Settings → API Keys → AI assistants → Claude managed sign-in. Turn it on, paste the Issuer URL, and save.
4

Name your workspace in Claude

Copy the Tenant ID from the same place in Migma, and paste it into Tenant ID in Claude’s setup. This keeps sign-in working if another workspace ever enters the same Issuer URL.
5

Run the test

In Claude, click Run test under Connection status. Claude shows each step and what came back.

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Who can connect

A person connects when both of these are true:
  • They are a member of the Migma workspace, and the email address of their Claude account is the address they use in Migma.
  • They have verified that email address in Migma. Your Migma settings show how many members can connect.
Migma does not create accounts through this connection. Invite people to the workspace first.

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What a connection can reach

  • Only this workspace, even when the person also belongs to other Migma workspaces or has their own brands.
  • Only the brands their role allows, with the same permissions they have in the app.
  • Designing and editing emails, audiences, campaigns and their approvals, exports, and reading sending domains.
Everything else stays in Migma: single sends, buying or changing domains, webhooks, plan changes, sending metrics, device previews, connected tools, and creating brands. Contact imports must be sent as text, not as a file upload. You approve every send in Migma.

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Turn it off

Turn off Claude managed sign-in in Migma, or change the Issuer URL. Tokens from the old setting stop working right away, and removing someone from the workspace stops their access right away too. Access tokens otherwise last one hour, and Claude renews them while the person remains a member of your Claude organization.

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If the connection test fails

Identity provider assertions, such as Okta Cross App Access, are not supported yet. Choose Claude-issued.
Last modified on November 5, 2026