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Launch · April 2026 · 4 min read

PassbackAI now lives inside Claude, ChatGPT, Gemini, and Perplexity

By Elad Diamant·Published April 30, 2026

You've got the answer open. Five things need work. You've done this before: copy the answer, open a new tab, find PassbackAI, paste, annotate, copy the feedback block, find the chat tab again, paste, send. Six steps. Two context switches. Every single time.

That friction was never the hard part. But it was the part that made the hard part harder.

TL;DR

PassbackAI for Chrome is a browser extension that intercepts the Copy button on Claude, ChatGPT, Gemini, and Perplexity and shows a small toast: "Copied. Review in PassbackAI →" One click opens a pre-loaded PassbackAI tab. Annotate your passages, copy the feedback block, paste it back into the chat. The round trip that used to be six steps and two context switches is now one click at the start. The extension captures any LLM answer universally, forwards the text directly to passbackai.com, and does all of this entirely in your browser — no backend, no server, no content ever leaves your machine. Install from the Chrome Web Store.

What happens when you click Copy on Claude

You click the Copy button on a Claude response. Nothing looks different at first. Then, a moment later, a toast appears in the bottom-right corner of the screen:

"Copied. Review in PassbackAI →"

Click it. The extension opens a fresh PassbackAI tab with your answer already loaded — the full text, ready to highlight. No paste step. No tab hunt. The context switch is still there in principle; the friction of it is gone.

The toast auto-dismisses after a few seconds if you don't need it. If you close it with the ✕, it stays quiet for the rest of that browser session. It doesn't nag.

What you'll see

The friction was never the act of annotating — it was the plumbing. Six steps and two context switches, every time you wanted to use the tool. The extension collapses both into one click.

Where it works right now

The capture-and-forward leg — Copy on any page triggers the toast and pre-loads PassbackAI — is live on Claude, ChatGPT, Gemini, and Perplexity. It also works on any other page where text is copied, because the intercept is universal, not site-specific.

The extension also listens for the return trip: when passbackai.com emits a bridge signal, the extension can auto-paste your feedback block back into the chat's input field. That leg is wired and waiting. The site doesn't emit the signal yet — that's the next release. For now, you paste the feedback block manually, as you always have. The work of going back is the same; the work of getting to PassbackAI first is gone.

Cursor, Lovable, and v0 are on the list. Code-review mode is coming — once it's ready, the same one-click entry point applies to generated code too. Not yet.

Privacy postureThe extension has no backend. When you click Copy and the toast fires, your copied text moves from the clipboard to a query parameter on an passbackai.com URL. It stays there, in your browser's memory, for the duration of your session. It is never sent to a server. The extension contains no analytics SDK, no telemetry, no third-party dependencies that phone home. You don't have to take our word for it: the build is reproducible and verifiable in CI. Don't trust the privacy claim — verify it.

Honest status — what works today

The extension exists for the same reason the site exists: stop letting friction be the reason the work doesn't happen. The annotation was never the problem. The six steps before it were. One of them is gone. The rest are on the way — and there's a short under-the-hood piece coming on what the clipboard interceptor, the ?omg-fresh handshake, and the reproducible build actually look like, for those who want to read the mechanism rather than just click it.

Questions people actually ask

Will the extension touch my chat content?

No. When you click the toast, the extension forwards the copied text to passbackai.com in the same browser session — the same trip you'd make by pasting manually, collapsed into one click. Nothing is sent to a server. Nothing is logged or analyzed. Content never leaves your browser.

What happens when I dismiss the toast?

Clicking ✕ suppresses the toast for the rest of your session on that site. It comes back the next time you open a fresh session. The suppression lives in memory only — nothing is written to disk or stored permanently.

Does it work on Cursor, Lovable, or v0?

The capture leg works on any site — copy text with the extension active and you can forward it to PassbackAI. The automatic toast is wired to Claude, ChatGPT, Gemini, and Perplexity right now. Cursor, Lovable, and v0 have a different interaction model (code output, not chat answers), and the toast is not surfaced there yet. That is the next iteration.

Can I see the source?

Yes. The extension is open source and the builds are reproducible — the binary on the Chrome Web Store is built deterministically from the public source. You don't have to take the privacy claim on trust.

Why isn't this just a feature on passbackai.com?

passbackai.com can't reach into another tab and read its content — browsers don't allow that. The extension watches for Copy events on the LLM sites you're already using and forwards the content across. Without it, the six manual steps (copy, switch tab, paste, navigate, re-find your chat) are unavoidable. The extension collapses them into one click without changing where you work.