fresh "mcp-proxy" install failed with "mcp-server-fetch" because of dependencies

[Cyrille37]

Hi

With a fresh (2026-08-12) $ uv tool install mcp-proxy then $ ~/.local/bin/mcp-proxy --host 0.0.0.0 --port 8931 -- uvx mcp-server-fetch throws dependencies error.

Traceback (most recent call last):
  File "/home/cyrille/.local/bin/mcp-proxy", line 4, in <module>
    from mcp_proxy.__main__ import main
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/__main__.py", line 23, in <module>
    from .mcp_server import DEFAULT_EXPOSE_HEADERS, MCPServerSettings, run_mcp_server
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/mcp_server.py", line 24, in <module>
    from .proxy_server import create_proxy_server
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/proxy_server.py", line 11, in <module>
    from mcp.server.lowlevel.server import request_ctx
ImportError: cannot import name 'request_ctx' from 'mcp.server.lowlevel.server' (/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp/server/lowlevel/server.py)

Perhaps some changes occured in "mcp-proxy" ?

Thanks and Regards.

[Cyrille37]

Perhaps a duplicate of #4560

[Cyrille37]

The workaround given for #4560 works :

uv tool uninstall mcp-proxy
uv tool install mcp-proxy --with 'mcp<2'
~/.local/bin/mcp-proxy --host 0.0.0.0 --port 8931 -- uvx --with "mcp<2" mcp-server-fetch

[emmanuelantony9895-beep]

Hi

With a fresh (2026-08-12) $ uv tool install mcp-proxy then $ ~/.local/bin/mcp-proxy --host 0.0.0.0 --port 8931 -- uvx mcp-server-fetch throws dependencies error.

Traceback (most recent call last):
  File "/home/cyrille/.local/bin/mcp-proxy", line 4, in <module>
    from mcp_proxy.__main__ import main
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/__main__.py", line 23, in <module>
    from .mcp_server import DEFAULT_EXPOSE_HEADERS, MCPServerSettings, run_mcp_server
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/mcp_server.py", line 24, in <module>
    from .proxy_server import create_proxy_server
  File "/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp_proxy/proxy_server.py", line 11, in <module>
    from mcp.server.lowlevel.server import request_ctx
ImportError: cannot import name 'request_ctx' from 'mcp.server.lowlevel.server' (/home/cyrille/.local/share/uv/tools/mcp-proxy/lib/python3.14/site-packages/mcp/server/lowlevel/server.py)

Perhaps some changes occured in "mcp-proxy" ?

Thanks and Regards.