How to connect multiple Slack workspaces to Claude, Codex & Cursor

Nango’s Management MCP enables Claude and other AI agents such as Codex and Cursor to access multiple Slack workspaces, overcoming Claude’s official connector limitation of one workspace per account. Users can create a free Nango account, set up Nango’s managed Slack OAuth integration, authorize up to 10 workspaces on the free plan, and share temporary authorization links with workspace owners when needed. After connecting Nango to Claude through its connector settings, users can ask the assistant to identify connected workspaces, read discussions from channels where the Nango app has been added, and send messages across different workspaces, while broader workspace search requires additional Slack configuration. Nango also supports more than 1,000 APIs and 10,000 prebuilt agent tools, managing authorization, credential renewal, webhooks, data synchronization, and custom integrations for customer-facing AI agents.

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