Need help connecting to LM studio LLM (lazyvim)

[justinluque]

This is what I have so far but I still can't seem to get the chat or inline to work.

~/.config/nvim/lua/plugins/ai.lua

return {
  "olimorris/codecompanion.nvim",
  dependencies = {
    "nvim-lua/plenary.nvim",
    "nvim-treesitter/nvim-treesitter",
  },
  config = function()
    require("codecompanion").setup({
      adapters = {
        LMStudio = function()
          return require("codecompanion.adapters").extend("ollama", {
            name = "LMStudio",
            env = {
              url = "http://localhost:1234/v1",
              api_key = "",
            },
          })
        end,
      },
      strategies = {
        chat = {
          adapter = "LMStudio",
        },
        inline = {
          adapter = "LMStudio",
        },
        agent = {
          adapter = "LMStudio",
        },
      },
    })
  end,
}

Thank you!!

[pixlmint]

You'll have to use the openai_compatible adapter, and the /v1 after the port isn't necessary

[justinluque]

Ok, I rewrote the config with your suggestions

return {
  "olimorris/codecompanion.nvim",
  dependencies = {
    "nvim-lua/plenary.nvim",
    "nvim-treesitter/nvim-treesitter",
  },
  config = function()
    require("codecompanion").setup({
      adapters = {
        lmstudio = function()
          return require("codecompanion.adapters").extend("openai_compatible", {
            name = "lmstudio",
            env = {
              url = "http://localhost:1234",
              api_key = "lmstudio",
            },
            schema = {
              model = {
                default = "qwen2.5-coder-7b-instruct",
              },
            },
          })
        end,
      },
      strategies = {
        chat = {
          adapter = "lmstudio",
        },
        inline = {
          adapter = "lmstudio",
        },
        agent = {
          adapter = "lmstudio",
        },
      },
    })
  end,
}

It still can't find the adapter though

  Error  17:48:50 notify.error CodeCompanion [ERROR] 2025-12-18 17:48:50
[adapters::http::extend] Adapter not found: lmstudio
   Error  17:48:50 msg_show.lua_error   CodeCompanionChat Error executing Lua callback: ...ecompanion.nvim/lua/codecompanion/adapters/http/init.lua:329: attempt to index local 'adapter' (a nil value)
stack traceback:
	...ecompanion.nvim/lua/codecompanion/adapters/http/init.lua:329: in function 'resolve'
	...panion.nvim/lua/codecompanion/interactions/chat/init.lua:477: in function 'chat'
	...m/lazy/codecompanion.nvim/lua/codecompanion/commands.lua:148: in function <...m/lazy/codecompanion.nvim/lua/codecompanion/commands.lua:123>
17:48:50 msg_show.echomsg   CodeCompanionChat [ERROR] 2025-12-18 17:48:50
[adapters::http::extend] Adapter not found: lmstudio

[bassamsdata]

it should be inside the http table (adapters.http).

[justinluque]

Thank you, that was it! Here's the final config if it's helpful to anyone else

return {
  "olimorris/codecompanion.nvim",
  dependencies = {
    "nvim-lua/plenary.nvim",
    "nvim-treesitter/nvim-treesitter",
  },
  config = function()
    require("codecompanion").setup({
      adapters = {
        http = {
          lmstudio = function()
            return require("codecompanion.adapters").extend("openai_compatible", {
              name = "lmstudio",
              env = {
                url = "http://localhost:1234",
                api_key = "lmstudio",
              },
              schema = {
                model = {
                  default = "qwen2.5-coder-7b-instruct",
                },
              },
            })
          end,
        },
      },
      strategies = {
        chat = {
          adapter = "lmstudio",
        },
        inline = {
          adapter = "lmstudio",
        },
        agent = {
          adapter = "lmstudio",
        },
      },
    })
  end,

  keys = {
    { "<leader>a", "", desc = "AI", mode = { "n", "v" } },
    { "<leader>ac", "<cmd>CodeCompanionChat Toggle<cr>", desc = "Open CodeCompanion Chat", mode = "n" },
    { "<leader>ai", "<cmd>CodeCompanion<cr>", desc = "Inline CodeCompanion", mode = "n" },
    { "<leader>aa", "<cmd>CodeCompanionActions<cr>", desc = "CodeCompanion Actions", mode = "n" },
  },
}

Unfortunately I don't think the adapter is compatible with @{insert_edit_into_file} but that's besides the point

[bassamsdata]

This is an older model by today’s standards, and I don’t believe it was trained with tool calling in mind. The smallest model I’ve tested this tool with so far is qwen/qwen3-8b.