Support more MCP Server transport

[igorbrasileiro]

Do we have plan to allow other client transport, like SSE?

Reference: https://modelcontextprotocol.io/sdk/java/mcp-server#server-transport-providers

[ravitemer]

Hi, Yes! It is something in the roadmap. Currently working on server prompts as well as native prompts. Once that is done with will look more closely into SSE. Although I didn't come across any widely used SSE servers yet. Do you have any in mind?

Given the new https://spec.modelcontextprotocol.io/specification/2025-03-26/basic/transports/#streamable-http remote transport and oauth support in the new specification, It might take some time for the servers to adapt.

What's your use case? It might help me understand how I should do it.

[igorbrasileiro]

I work at deco.cx and every deco site can be converted to a mcp server using https://github.com/deco-cx/ai. So the use case is to allow use deco.cx MCP Server to interact with your server via your IDE.

[igorbrasileiro]

Probably i could use https://github.com/supercorp-ai/supergateway to convert my mcp servers from SSE to Stdio

[ravitemer]

Wow, just signed up. deco.cx looks awesome. Can't wait to try it out.

Will try to add SSE soon. I guess in the near future every website will have a endpoint like /mcp that authorizes signed up users and provides authenticated apis as mcp servers. 😀

Probably i could use https://github.com/supercorp-ai/supergateway to convert my mcp servers from SSE to Stdio

That's a nice idea. I haven't tried it, hope it works.

[igorbrasileiro]

@ravitemer on https://deco.chat we basically connect with MCP servers that's remote. Have you saw this https://composio.dev/?

[ravitemer]

@igorbrasileiro Thank you. This is very helpful.

I didn't know about deco chat but heard of composio. Now that I read it, it makes much sense to have SSE support, maybe we can add support for composio through their ts library or deco (if possible). I need to look more closely at their docs to see how we can have both local and remote servers available at the same time.

Thanks again, I will make this a priority.

Edit: Ofcourse, support for sse urls as well.

[ravitemer]

@igorbrasileiro we now have SSE support.

I tried it with some composio servers and it worked great! But I think with composio servers every-time checking for connection, (or initiating if not connected) seems like too many requests.

Given every mcp url for composio follows same format mcp.composio.dev/{server_name}/{user_secret} if we can get a list MCP servers (I see in deco chat you have a json file with all the apps), we can show something similar to marketplace and let users initiate connections from the UI. And only send the llm initiated servers. Let's see how this goes I have sent them a message regarding the same.

Thanks for the suggestion. Let me know if we can make this any better or if you have any issues

[ravitemer]

The inputs for object types can be made better I think. Currently having to type a perfect json string seems too hard 😄

[igorbrasileiro]

The settings should be like ?

{
  "mcpServers": {
    "admin.deco.cx": {
        "type": "sse",
        "url": "https://admin.deco.cx/mcp/sse",
         "headers": { ... }
     }
  }
}

[ravitemer]

Yes! Exactly.

No need for explicit type, it assumes if url is present, that it might be a sse server.

Are you having any troubles with the setup?

[igorbrasileiro]

Nope, it's working well.

[ravitemer]

Glad!

Please let me know if you feel anything can be made better.

Composio seems to be releasing v3 api soon. I think that will be cool to have inbuilt! 🤞🏻