Problem using stdio with gemini-cli

[ullgren]

Build a simple "hello world" type mcp server using mcp-golang and trying to use it with gemini-cli:

I get the following error

│ x say_hello (example-mcp-server MCP Server) {}
│
│    no schema with key or ref "https://json-schema.org/draft/2020-12/schema"

Anyone successfully used a mcp-golang mcp server with gemini-cli ?
The weird thing is that about 1 out of 3 it still calls the tool and then the response is returned and handled correctly