Error message when running on Windows with Claude

[xpilasneo4j]

Expected Behavior (Mandatory)

Claude can connect to the MCP server

Actual Behavior (Mandatory)

Claude can't connect to the MCP server

How to Reproduce the Problem

I uploaded my code and followed the README, just adapted it for windows

Simple Example

I was able to fix it replacing

if __name__ == "__main__":
    main()

by

if __name__ == "__main__":
    loop = asyncio.get_event_loop()
    loop.run_until_complete(main())

Screenshots (where it's possibile)

In log Claude mcp-server-neo4j.log

2025-07-15T00:49:18.101Z [neo4j] [info] Message from client: {"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"claude-ai","version":"0.1.0"}},"jsonrpc":"2.0","id":0} { metadata: undefined }
C:\Users\XavierPilas\Documents\GitHub\mcp-neo4j\servers\mcp-neo4j-cypher\src\mcp_neo4j_cypher\server.py:188: RuntimeWarning: coroutine 'main' was never awaited
  main()
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

Specifications (Mandatory)

Not sure what to put

Versions

• OS: Windows
• Library: latest MCP server
• Neo4j: 2025.06

[a-s-g93]

can you post your configuration file?

[a-s-g93]

The entry point should be the __init__.py file, not the server.py file where you modified the code. This shouldn't be an issue with the following configuration.

"mcpServers": {
  "neo4j-aura": {
    "command": "uvx",
    "args": [ "mcp-neo4j-cypher@0.2.4", "--transport", "stdio"  ],
    "env": {
      "NEO4J_URI": "bolt://localhost:7687",
      "NEO4J_USERNAME": "neo4j",
      "NEO4J_PASSWORD": "<your-password>",
      "NEO4J_DATABASE": "neo4j"
    }
  }
}

[xpilasneo4j]

Did you manage to make it work on Windows ?
Let me try more to make it work on windows without doing that change BUT so far that is the only way I have it working OK

[a-s-g93]

@xpilasneo4j can you post your claude_desktop_configuration.json file that works (with your change) and also the one you're troubleshooting (original package code) if you're using different configurations?

[a-s-g93]

@xpilasneo4j was this fixed?