Not able to load the widget html with MCP server in python, checked with MCP inspector

[Sateesh-karagana]

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I have aMCP server running in python
The server is running fine and i could test it with MCP inspector as suggested in the below doc

https://developers.openai.com/apps-sdk/quickstart
https://developers.openai.com/apps-sdk/build/mcp-server#structure-the-data-your-tool-returns
able to run the python server
I could see the resources and tools in the MCP inspector locally with the below
npx @modelcontextprotocol/inspector
I couldn't load the widget
Not sure if i am doing something wrong or something is missing, Could someone please help me out here to fix the issue.

---

The repo link is here and the steps to produce what i am trying to do
https://github.com/ecociel/mcp-app-python

1. Need to have these installation version
   Python 3.13.2
   fastmcp 2.13.1
   mcp 1.21.2
2. Run the server, it show something like below screenshot
   python server.py

3. Run the MCP inspector in another terminal
   npx @modelcontextprotocol/inspector
4. Go to the MCP inspector opened in the browser and click on tools, you can see something like below screenshot
   click on tools
   click on get_info tool below
   in the topic (right side), enter some string(oranges)
   click on Run Tool
   it show you "Success" and the structured content but the widget (html i have provided in the repo) is not getting loaded.

5. When i try to load the widget like below, getting 404 Not found
   curl "http://localhost:8000/mcp/resource/ui%3A//widget/info-widget.html"

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[ebndev]

Hi @Sateesh-karagana, thanks for being a part of the GitHub Community!

The Projects & Issues category is meant for discussions regarding GitHub Project boards and GitHub Issues in a repository. I will be moving your post to Programming Help, as it may be more relevant there and might help someone give you a nudge in the right direction 😄

[Sateesh-karagana]

Hello
Could someone please help me here?