Trouble connecting with MCPHub plugin

[mauf3r]

Hi there,

I am referring to a discussion I had with @ravitemer on the MCPHub discord channel.
I have CodeCompanion and MCPHub both configured and working in nvim, but I cannot access @mcp from the CodeCompanion chat.
Plattform: Mac PowerBook M4, MacOS 15.4.1 (will update now to 15.5!), vim 0.11.1 - plugins up to date

codecompanion.lua

local llm = "openai"

return {
  "olimorris/codecompanion.nvim",
  opts = {
    adapters = {
      -- mlx_lm = function()
      --   return require("plugins/codecompanion/mlx")
      -- end,
      openai = function()
        return require("codecompanion.adapters").extend("openai", {
          env = {
            api_key = "MY_API_KEY",
            -- api_key = "cmd:gpg --decrypt ~/.openai-api-key.gpg 2>/dev/null",
          },
          schema = {
            model = {
              default = "gpt-4o",
            },
          },
        })
      end,
      lmstudio = function()
        return require("codecompanion.adapters").extend("openai_compatible", {
          env = {
            url = "http://127.0.0.1:8001",
          },
        })
      end,
    },
    strategies = {
      chat = {
        adapter = llm,
      },
      inline = {
        adapter = llm,
      },
      cmd = {
        adapter = llm,
      },
    },
    opts = {
       log_level = "TRACE",
    }
  },
  dependencies = {
    "nvim-lua/plenary.nvim",
    "nvim-treesitter/nvim-treesitter",
  },
  extensions = {
    mcphub = {
      callback = "mcphub.extensions.codecompanion",
      opts = {
        show_result_in_chat = true, -- Show mcp tool results in chat
        make_vars = true, -- Convert resources to #variables
        make_slash_commands = true, -- Add prompts as /slash commands
      },
    },
  },
}

mcphub.lua

return {
  "ravitemer/mcphub.nvim",
  dependencies = { "nvim-lua/plenary.nvim" },
  build = "npm install -g mcp-hub@latest",
  config = function()
    require("mcphub").setup({
      port = 3000,
      config = vim.fn.expand("~/.config/nvim/mcpservers.json"),
      auto_toggle_mcp_servers = true,
    })
  end,
}

If I start vim, with no file loaded, and invoke :CodeCompanionChat, the chat opens, @ shows me some items, e.g. @files, bit @mcp is not there. I can use @files.
If I open codecompanion.lua, @mcp is there, but the AI has no access to any data. After I switch to another file, e.g. lazy.lua, @mcp is not available in the chat any more.

From :MCPHub I can query data, from my calendar or ToDos using apple-mcp

Any hints would be deeply appreceated.

[ravitemer]

@mauf3r Thanks for sharing it here. (I have edited log_level in the posted config which is supposed to be inside opts field, please update it in your config as well)

Wait!!! As I type this I find that your config is wrong 😶. Try this

local llm = "openai"

return {
	"olimorris/codecompanion.nvim",
	opts = {
		adapters = {
			-- mlx_lm = function()
			--   return require("plugins/codecompanion/mlx")
			-- end,
			openai = function()
				return require("codecompanion.adapters").extend("openai", {
					env = {
						api_key = "MY_API_KEY",
						-- api_key = "cmd:gpg --decrypt ~/.openai-api-key.gpg 2>/dev/null",
					},
					schema = {
						model = {
							default = "gpt-4o",
						},
					},
				})
			end,
			lmstudio = function()
				return require("codecompanion.adapters").extend("openai_compatible", {
					env = {
						url = "http://127.0.0.1:8001",
					},
				})
			end,
		},
		strategies = {
			chat = {
				adapter = llm,
			},
			inline = {
				adapter = llm,
			},
			cmd = {
				adapter = llm,
			},
		},
		extensions = {
			mcphub = {
				callback = "mcphub.extensions.codecompanion",
				opts = {
					show_result_in_chat = true, -- Show mcp tool results in chat
					make_vars = true, -- Convert resources to #variables
					make_slash_commands = true, -- Add prompts as /slash commands
				},
			},
		},
		opts = {
			log_level = "TRACE",
		},
	},
	dependencies = {
		"nvim-lua/plenary.nvim",
		"nvim-treesitter/nvim-treesitter",
	},
}

[mauf3r]

Seems I had an error in my config :-(
codecompanion.lua should look like this:

local llm = "openai"

return {
  "olimorris/codecompanion.nvim",
  opts = {
    adapters = {
      -- mlx_lm = function()
      --   return require("plugins/codecompanion/mlx")
      -- end,
      openai = function()
        return require("codecompanion.adapters").extend("openai", {
          env = {
            api_key = "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",
            -- api_key = "cmd:gpg --decrypt ~/.openai-api-key.gpg 2>/dev/null",
          },
          schema = {
            model = {
              default = "gpt-4o",
            },
          },
        })
      end,
      lmstudio = function()
        return require("codecompanion.adapters").extend("openai_compatible", {
          env = {
            url = "http://127.0.0.1:8001",
          },
        })
      end,
    },
    strategies = {
      chat = {
        adapter = llm,
      },
      inline = {
        adapter = llm,
      },
      cmd = {
        adapter = llm,
      },
    },
    extensions = {
      mcphub = {
        callback = "mcphub.extensions.codecompanion",
        opts = {
          show_result_in_chat = true, -- Show mcp tool results in chat
          make_vars = true, -- Convert resources to #variables
          make_slash_commands = true, -- Add prompts as /slash commands
        },
      },
    },
    opts = {
      log_level = "TRACE",
    },
  },
  dependencies = {
    "nvim-lua/plenary.nvim",
    "nvim-treesitter/nvim-treesitter",
  },
}