3 Honest Ways to Stop Pasting Large Files Into an AI CLI

Reference by path, paste an excerpt, or offload it, each has a real cost.

Sooner or later an AI CLI needs to see a file that's too big to comfortably paste inline. There are a few genuinely different ways to hand it over, and none of them is free. Here's what each one actually costs you.

Option 1: reference the file by path

Instead of pasting content, you tell the CLI where the file already lives. This is a documented feature in several AI CLIs, not a workaround:

• Claude Code: typing @path/to/file "includes the full content of the file in the conversation," per Claude Code's own documentation.
• Gemini CLI: "at commands" (@path/to/file) "are used to include the content of files or directories as part of your prompt," per the Gemini CLI docs.
• Codex CLI: typing @ opens a mentions menu to "search for a file in the workspace and add its path to the prompt," per OpenAI's Codex CLI docs.

Pros: no clipboard step at all, tab completion, the file's actual current content on disk, not a stale copy you grabbed earlier.

Cons: it's a feature of that one CLI's interactive prompt. It doesn't help in a chat UI, in a different app, or if the content you need isn't a file that exists on disk yet, like a stack trace still sitting in your terminal's scrollback.

Option 2: paste only the excerpt you need

Instead of the whole file, you paste the ten lines around the actual problem.

Pros: the smallest possible addition to the context, and it forces you to actually locate the relevant part before you ask about it.

Cons: it's manual work every single time, and it's easy to trim out something the model needed for a full picture. It also doesn't scale to tasks that genuinely require the whole file, like reviewing a complete diff.

Option 3: auto-offload the paste to a file

This is the approach CtxVault takes. Copy something over your configured threshold (100 lines by default, adjustable), and it's silently written to a file in your vault folder, before you've even decided where to paste it. The terminal-specific part happens on the paste side: paste into a recognized terminal app and you get the file's path instead of the raw text; paste anywhere else and you get the original text, unchanged, exactly as before.

Pros: zero manual step per paste, same habit (Cmd+V) as always, works even for content that never existed as a file before you copied it.

Cons, plainly stated: right-click or menu-bar paste doesn't go through the same interception as Cmd+V, so it still inserts the original full text (there's a deliberate override hotkey for when you want that). And VS Code's integrated terminal isn't in the whitelist by default, because its terminal and editor panes aren't distinguishable from the outside, so enabling it would risk intercepting paste into your actual source files.

Which one fits your day

If you live in one CLI and the file already exists on disk, its own @-reference is usually the fastest path. If what you're pasting doesn't exist as a file yet, a log tail, an error you copied from somewhere else, an auto-offload tool is the only one of these three that handles it without extra steps on your part. For a full side-by-side, including a manual "save the file yourself" baseline, see the comparison page.