I am testing out the sub-agents feature with my final year project on career counselling.
Is there a way to use the internal ReAct sub-agents with a custom tool, without configuring an MCP?
Initially i configured dummy values for the MCP in the sub-agents config.yml and endpoints.yml, but when i do rasa train, i get an error that rasa could not connect to that server. Pls help me out, it’s urgent 
Hi @cike-dev It’s a perfectly valid request. We did intentionally leave out this possibility in the first iteration but you can expect this to come somewhere around Q2’2026.
As a workaround for now, would it be possible for you to run a dummy mcp server which maybe has no tools and use that in your project? That would at least let you train and run the agent. I know it’s a hack at best but trying to help in the short term for you to progress.
Thank you, Daksh.
I had already gone ahead and used an MCP server in my project and even added a few tools to it just for experimentation — and honestly, it turned out to be a great experience.
I’m sincerely grateful to you and the team for providing free access to the developer edition. It allowed me to learn and become comfortable with agentic chat orchestration and Rasa CALM in a very hands-on way.
The project was successful, and I performed very well. Thank you so much for the support and for building such an exciting platform.
I’m definitely looking forward to using ReAct sub-agents in the future without requiring an MCP, once that becomes available.
Best regards, Emmanuel Edeh
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