jumpy

Inspired by 99: I, like Prime, wanted a tool to allow for me to still be in the driver seat if I am going to spawn an AI to edit my code.

The main difference between jumpy and other tools, like 99, are:

feature	jumpy	avante / sidekick	codecompanion inline	claude code / aider
Interaction model	Inline prompt → hunks in buffer	Sidebar chat → apply	Inline edit → accept/reject	CLI agent → full file writes
Review granularity	Per-hunk accept/reject	Per-file or per-suggestion	Per-change	Post-hoc (git diff)
Context switch	None: you stay in buffer	Sidebar opens	Minimal	Leave editor or split terminal
LLM output format	Search/replace blocks	Full file / patch	Full file	Full file via temp
Token efficiency	High (only changed lines sent back)	Lower (full context)	Lower	Lower
Scope	Single targeted edit	Multi-file refactors, chat	Single edit or chat	Whole-project agentic tasks

Some of these are to be fleshed out, but the sole purpose is to know exactly what I am letting the LLM write into my code. I have no interest in letting it change everything, and only then can I go back and review every change.

So the philosophy here is: yes, I still want to handwrite my code AND use AI, but I prefer that I have full control over what the AI is writing. I don't want to have to wait until it finishes in order to review its changes.

That being said, I don't know wtf I'm doing, and right now, this really doesn't work very well.

But hopefully it will soon :P

Install

-- lazy.nvim
{
  "cachebag/jumpy",
  config = function()
    require("jumpy").setup({
      provider = "anthropic", -- or "openai", "openrouter"
    })
  end,
}

set your API key: export ANTHROPIC_API_KEY="sk-ant-..." (or OPENAI_API_KEY, JUMPY_API_KEY for openrouter).

Use

Keybind	Action
<leader>j	Open prompt, type your change, hit <CR>
]h / [h	Next / previous hunk
<leader>a	Accept hunk
<leader>x	Reject hunk
<leader>A	Accept all hunks
<leader>X	Reject all hunks
<leader>r	Reprompt the hunk under cursor

License

MIT