Is there support to report progress on long-running tools?

[fabiante]

The MCP documentation states:

... Best practices ...

Use progress reporting for long operations

I think this is a valuable feature but haven't found it as library function. Is there currently support for doing so?

In the documentation to message handling it says:

Progress reporting

• Use progress tokens for long operations
• Report progress incrementally
• Include total progress when known

And the actual protocol documentation has this section: https://spec.modelcontextprotocol.io/specification/2024-11-05/basic/utilities/progress/

The Model Context Protocol (MCP) supports optional progress tracking for long-running operations through notification messages. Either side can send progress notifications to provide updates about operation status.

Edit: My personal context - I currently have to increase timeout configurations in my MCP Client which is not ideal for end users. From the user perspective it would be best to not get a timeout error on long running operations (~1 minute in my case)

[ezynda3]

I believe the example here is what you are looking for. https://github.com/mark3labs/mcp-go/blob/main/examples/everything/main.go#L351-L389

[fabiante]

Yes, that looks good. I will give that a try eventually.

I haven't found any way to find that for myself, do you have an idea where I could improve the documentation so that this helps new users?