Cursor Agent Neovim Plugin

A minimal Neovim plugin to run the Cursor Agent CLI inside a centered floating terminal. Toggle an interactive terminal at your project root, or send the current buffer or a visual selection to Cursor Agent.

Requirements

• Cursor Agent CLI: cursor-agent available on your $PATH

Installation

lazy.nvim

{
  "xTacobaco/cursor-agent.nvim",
  config = function()
    vim.keymap.set("n", "<leader>ca", ":CursorAgent<CR>", { desc = "Cursor Agent: Toggle terminal" })
    vim.keymap.set("v", "<leader>ca", ":CursorAgentSelection<CR>", { desc = "Cursor Agent: Send selection" })
    vim.keymap.set("n", "<leader>cA", ":CursorAgentBuffer<CR>", { desc = "Cursor Agent: Send buffer" })
  end,
}

packer.nvim

use({
  "xTacobaco/cursor-agent.nvim",
  config = function()
    require("cursor-agent").setup({})
  end,
})

vim-plug

Plug 'xTacobaco/cursor-agent.nvim'

Then in your init.lua:

require("cursor-agent").setup({})

Note: The plugin auto-initializes with defaults on load (via after/plugin/cursor-agent.lua). Calling setup() yourself lets you override defaults.

Quickstart

• Run :CursorAgent to toggle an interactive floating terminal in your project root. Type directly into the cursor-agent program.
• Visually select code, then use :CursorAgentSelection to ask about just that selection.
• Run :CursorAgentBuffer to send the entire current buffer (handy for files like cursor.md).
• Press q in normal mode in the floating terminal to close it or run :CursorAgent <leader>ca to toggle it away.

All interactions happen in a centered floating terminal.

Commands

• :CursorAgent: Toggle the interactive Cursor Agent terminal (project root).
• :CursorAgentSelection: Send the current visual selection (writes to a temp file and opens terminal rendering).
• :CursorAgentBuffer: Send the full current buffer (writes to a temp file and opens terminal rendering).

Configuration

Only set what you need. For typical usage, cmd and args are enough.

require("cursor-agent").setup({
  -- Executable or argv table. Example: "cursor-agent" or {"/usr/local/bin/cursor-agent"}
  cmd = "cursor-agent",
  -- Additional arguments always passed to the CLI
  args = {},
})

Advanced (for lower-level CLI helpers present in the codebase but not required for terminal mode):

require("cursor-agent").setup({
  -- Whether to send content via stdin when using non-terminal helpers
  use_stdin = true,
  -- Reserved for future concurrency control
  multi_instance = false,
  -- Timeout for non-streaming helpers (ms)
  timeout_ms = 60000,
  -- Auto-scroll behavior for certain UI helpers
  auto_scroll = true,
})

Examples

• Use an absolute path for the CLI:

require("cursor-agent").setup({ cmd = "/usr/local/bin/cursor-agent" })

Suggested keymaps

-- Toggle the interactive terminal
vim.keymap.set("n", "<leader>ca", ":CursorAgent<CR>", { desc = "Cursor Agent: Toggle terminal" })

-- Ask about the visual selection
vim.keymap.set("v", "<leader>ca", ":CursorAgentSelection<CR>", { desc = "Cursor Agent: Send selection" })

-- Ask about the current buffer
vim.keymap.set("n", "<leader>cA", ":CursorAgentBuffer<CR>", { desc = "Cursor Agent: Send buffer" })

Programmatic usage

You can call the API directly if you prefer:

-- Launch a one-off run passing a prompt as argv (opens a floating terminal)
require("cursor-agent").ask({ prompt = "How can I refactor this function?" })

This opens a floating terminal using termopen, with the working directory set to the detected project root.

Troubleshooting

• CLI not found: Ensure cursor-agent is on your $PATH.
• No output appears: Verify your CLI installation by running it in a normal terminal.
• Wrong directory: The terminal starts in your project root (LSP root if available, otherwise common markers like .git).

How it works

• A floating terminal is created with termopen, centered, wrapped, and ready for immediate input.
• The terminal starts in the detected project root so Cursor Agent has the right context.
• For selection/buffer commands, the text is written to a temporary file and its path is passed to the CLI as a positional argument.

Contributing

Contributions are welcome! If you have ideas or improvements, please open an issue or submit a PR.

Acknowledgements

• Cursor Agent CLI by Cursor - This plugin was build entirely using GPT-5 in Cursor Agent CLI. Development cost: $0.45 with 10m 34s of API time.