Possible issue with Docker installation of Grafana MCP

[mik3lol]

I followed the installation guide in this repository to set up Grafana MCP. When using the Grafana MCP binary installation, Claude Desktop was able to call the MCP server and retrieve data from my Grafana Cloud instance.

However, when I use the Docker installation of Grafana MCP, Claude never calls the Grafana MCP, as if the Docker version of the MCP server isn't working.

I also tried calling the Grafana MCP server from the n8n MCP client node, and I got the following error message.

[ 
{ "received": "", "code": "invalid_literal", "expected": "object", "path": [ "tools", 0, "outputSchema", "type" ], "message": "Invalid literal value, expected \"object\"" }, 
{ "received": "", "code": "invalid_literal", "expected": "object", "path": [ "tools", 1, "outputSchema", "type" ], "message": "Invalid literal value, expected \"object\"" },   
...
]

The error suggests the schema of the tool being exposed by Grafana MCP server (Docker version) has an unexpected value.

Am I doing something wrong, or is this unexpected behavior? Thanks in advance.