Wondering how to split big applications in several files

[majorgilles]

Obviously it's not ideal to endup with a great deal of mcp functions in the same file but do you have examples on how to develop a large fastmcp implementation in severa files, with a single mcp = FastMCP() app.

I tried splitting my main.py file holding the mcp variable and the mcp.tool calls in several files importing the mcp in each file.

This approach worked for integration tests (using fastmcp's client) but failed when actually importing the tools in a client (no tools were registered).

Would using this be the way to go?:

# main file
mcp = FastMcp(...)
mcp.tool(my_function)

# other file
def my_function(...):
    ...