After "uv run mcp" getting TypeError: Parameter.make_metavar() missing 1 required positional argument: 'ctx'

[Aaron-szt]

Describe the bug
After running the following lines:

uv init mcp-server-demo

cd mcp-server-demo

uv venv

source .venv/bin/activate

uv add "mcp[cli]"

uv run mcp

Getting error:

Usage: mcp [OPTIONS] COMMAND [ARGS]...                                                          
                                                                                                 
 MCP development tools                                                                           
                                                                                                 
                                                                                                 
╭────────────────────────────── Traceback (most recent call last) ──────────────────────────────╮
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/bin/mcp:10 in <module>                │
│                                                                                               │
│    7 │   │   sys.argv[0] = sys.argv[0][:-11]                                                  │
│    8 │   elif sys.argv[0].endswith(".exe"):                                                   │
│    9 │   │   sys.argv[0] = sys.argv[0][:-4]                                                   │
│ ❱ 10 │   sys.exit(app())                                                                      │
│   11                                                                                          │
│                                                                                               │
│ ╭──────────────────── locals ────────────────────╮                                            │
│ │ app = <typer.main.Typer object at 0x1066bc450> │                                            │
│ │ sys = <module 'sys' (built-in)>                │                                            │
│ ╰────────────────────────────────────────────────╯                                            │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/ma │
│ in.py:340 in __call__                                                                         │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/ma │
│ in.py:323 in __call__                                                                         │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/co │
│ re.py:1442 in __call__                                                                        │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/co │
│ re.py:740 in main                                                                             │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/co │
│ re.py:194 in _main                                                                            │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/co │
│ re.py:1186 in make_context                                                                    │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/co │
│ re.py:1784 in parse_args                                                                      │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/ex │
│ ceptions.py:271 in __init__                                                                   │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/co │
│ re.py:730 in get_help                                                                         │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/click/co │
│ re.py:1064 in get_help                                                                        │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/co │
│ re.py:754 in format_help                                                                      │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/ri │
│ ch_utils.py:614 in rich_format_help                                                           │
│                                                                                               │
│ /Users/aarons/Documents/workplace/mcp-server-demo/.venv/lib/python3.11/site-packages/typer/ri │
│ ch_utils.py:373 in _print_options_panel                                                       │
╰───────────────────────────────────────────────────────────────────────────────────────────────╯
TypeError: Parameter.make_metavar() missing 1 required positional argument: 'ctx'

To Reproduce
Steps to reproduce the behavior:
Run

uv init mcp-server-demo
cd mcp-server-demo
uv venv
source .venv/bin/activate
uv add "mcp[cli]"
uv run mcp

Expected behavior
Expect mcp running without error

Screenshots
N/A

Desktop (please complete the following information):

• OS: macOS Sequoia 15.4.1
• Browser N/A
• Version
• Python 3.11

[samatix]

This is an issue with the latest version of Click released yesterday that caused an exception in _print_options_panel

The issue is described here:
fastapi/typer#1215

The PR for the fix on Typer:
fastapi/typer#1145

Pinning to click <8.2.0 resolves the issue.