How to add all tools of multiple MCPs in Dify's orchestration

[YunXi24]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

When adding tools in the orchestration, if you add all tools of one MCP, you cannot add other MCPs. Is there a limit on the number of tools here? I want to add all tools of multiple MCPs. How should I choose?

2. Additional context or comments

No response

[dosubot[bot]]

There is no explicit technical limit in the backend or frontend code that restricts the number of tools you can add from multiple MCPs in Dify's orchestration. However, user reports and the current UI suggest that when you select all tools from one MCP, the interface may prevent you from adding tools from other MCPs, likely due to how the UI manages tool selection and display rather than a hard-coded limit in the orchestration logic itself see discussion.

The backend (e.g., ToolNode and ToolManager) manages tools individually per provider and does not enforce a maximum number of tools or MCPs see code. The frontend workflow tool management also does not set a hard limit see code.

If you are unable to add tools from multiple MCPs, it is likely a UI limitation or a workflow configuration rule. As a workaround, try adding tools individually rather than using the "add all" option for a single MCP, or check if the UI allows you to deselect some tools from one MCP before adding from another. If this doesn't work, it may require a UI/UX update to support your use case.

To reply, just mention @dosu.

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