Python - MCP - Client with dynamic resource (Stackoverflow)

#!/usr/bin/env python3.13

# date: 2025.09.05

# [python - Why doesn't MCP server expose my resources? - Stack Overflow](https://stackoverflow.com/questions/79756235/why-doesnt-mcp-server-expose-my-resources?noredirect=1#comment140716418_79756235)

# Doc: [FastMC - Call Your Server](https://gofastmcp.com/getting-started/quickstart#call-your-server)

# Run:
#     python client.py       # run with port 8000
#     python client.py 7000  # run with port 7000

# Server needs:
# - FastMCP:
#     from fastmcp import FastMCP
#     mcp.run(transport='http', port=7000)
# - mcp.server.FastMCP:
#     from mcp.server.fastmcp import FastMCP
#     mcp = FastMCP("Demo", port=7000)
#     mcp.run(transport='streamable-http')  # it doesn't allow to set `port` here - port has to be in FastMCP

import sys
import asyncio
from fastmcp import Client

if len(sys.argv) > 1:
    PORT = int(sys.argv[1])
else:
    PORT = 8000   # usually I use this port with different server

client = Client(f"http://localhost:{PORT}/mcp")  # doc forgot `/mcp`

async def main():

    async with client:

        # it doesn't show "dynamic resources" (or rather "resource patterns")
        resources = await client.list_resources()
        print(f'--- resources ({len(resources)}) ---')
        for item in resources:
            print(item)

        tools = await client.list_tools()
        print(f'--- tools ({len(tools)}) ---')
        for item in tools:
            print(item)

        prompts = await client.list_prompts()
        print(f'--- prompts ({len(prompts)}) ---')
        for item in prompts:
            print(item)

        # it can use "dynamic resources" (or rather "resource patterns")
        print('--- reading resources ---')
        result = await client.read_resource('greeting://Adam')  # @mcp.resource('greeting://{name}')
        #results = await client.read_resource('greeting:Adam')  # @mcp.resource('greeting:{name}')
        print(results)
        for item in results:
            print(item.text)

        #print('--- call tools ---')
        #name = "Adam"
        #result = await client.call_tool("greet", {"name": name})
        #print(result)
        #for item in result.content:
        #    print(item.text)

asyncio.run(main())