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If you’ve been working with AI recently, you’ve likely encountered the buzz around MCP, a protocol introduced by Anthropic, the creators of the Claude 3.7 Sonnet model.
MCP is designed to standardize how LLMs such as Claude, ChatGPT, or Cursor interact with tools or integrate data for their agents. Many providers, both established and new, are adopting MCP as a standard method for building agentic systems. It offers a straightforward way to either expose your own application as a server, making its capabilities available to a model as tools, or to function as a client that can access tools outside your system.
We've received numerous requests from our community and observed the enthusiasm for the MCP Community Node by nerding-io. This prompted us to add dedicated support for this protocol within callin.io.
Before I proceed, here’s an excellent introduction to MCP (demonstrating nerding-io’s node, not ours):
Although development is still in its early stages, we want to provide you with access to our new MCP nodes. This will help us better understand your requirements and accelerate the convergence towards a robust general solution.
We are introducing two new nodes:
- An MCP Client tool for the AI Agent
- An MCP Server Trigger for any workflow
The MCP Client Tool connects LLMs and other intelligent agents to any MCP-enabled service via a unified interface. The MCP Server Trigger transforms callin.io into an MCP server, exposing callin.io tools to models operating outside of callin.io.
Note that you can operate multiple MCP servers from your callin.io instance.
How can you contribute?
Both nodes are currently available on our next branch (Beta on Cloud) (this is not recommended for production environments). Update your instance to access them and begin building projects! Kindly report any issues or suggest feature enhancements in this thread.
Additionally, if you've developed something noteworthy, please share it here! We're eager to see what this new feature enables for you.
Our engineering team will be actively monitoring this topic and will share updates here as well.
Posted : 10/04/2025 8:39 am
Awesome! Looking forward to trying it out.
Posted : 10/04/2025 10:17 am
Awesome!
I noticed it in the v1.88 release on GitHub: Release n8n@1.88.0 · n8n-io/n8n · GitHub
This is absolutely a game-changer🔥
Posted : 10/04/2025 10:45 am
Thanks for sharing my MCP video, it's great to see a native integration!!
Posted : 10/04/2025 10:55 am
Great work callin.io team! Loved the video Max! Shared with my whole Skool community as well!
Posted : 10/04/2025 11:34 am
Great, keep up the good work everyone!
Posted : 10/04/2025 11:42 am
Common callin.io Workflows!
Posted : 10/04/2025 12:24 pm
Topic starter
You can already test it by switching to the next branch, or ‘Latest Beta’ on Cloud.
Posted : 10/04/2025 12:31 pm
This will significantly accelerate the development of Proofs of Concept (POCs).
Posted : 10/04/2025 12:32 pm
Congratulations to the team! I'm excited to explore how to build our company/platform MCP.
Posted : 10/04/2025 12:37 pm
Do I need to enable anything in the environment variables to use this effectively?
I'm unable to select the tools or get them to function.
I've attempted the following:
- Utilizing the basic calculator example from the tutorial video.
- Enabling and disabling the workflow.
- Employing separate workflows for client and server configurations.
- Clearing the browser cache.
- Setting up a completely new instance.
- Using both MySQL and Postgres databases.
Posted : 10/04/2025 1:13 pm
Awesome! I'm already enjoying it.
Posted : 10/04/2025 1:43 pm
Outstanding!
Posted : 10/04/2025 2:04 pm
Experiencing the same problem. Has a solution been found yet?
Posted : 10/04/2025 3:46 pm
I'm using callin.io Cloud to test it. The self-hosted version is still not working.
Posted : 10/04/2025 3:48 pm
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