Let Claude list your old stuff on eBay

It drives your browser, not its own

This is the bit worth understanding before you set it up, because it changes what you should expect. Claude in Chrome is an extension that acts inside your real browser, in your real tabs, using the eBay account you are already signed into. You watch it click. There is no separate cloud browser and no screenshot arriving afterwards to prove it did something, because you were looking at it the whole time.

That is also why it feels slower than a demo video suggests. A full listing run is a few minutes of watching it work, not fifteen seconds. Put it on a second monitor and do something else, and check in when it pauses to ask you a question.

Install it and give it eBay

1. 🧩 Add the extension. Install Claude in Chrome from the Chrome Web Store and pin it to your toolbar so the side panel is one click away. Anthropic's get started with Claude in Chrome page walks the install and lists the permissions it asks for, which include reading the page and controlling browser actions.
2. 🔐 Grant permission for eBay specifically. Permissions are per site, so you allow the sites you want and nothing else. Grant it eBay and leave the rest of your browsing alone. You can revoke a site at any time in settings, and the permissions guide covers exactly where.
3. 🔑 Sign into eBay yourself. Log in as you normally would, in that same Chrome profile, before you start. Claude works inside your logged-in session, so it never needs your password and you should never paste one into the chat.
4. 📸 Get your photos ready in one folder. Natural light, plain background, three or four angles, and a close-up of any flaw or serial number. Name the files after the item so you can point at them without hunting. Good photos do more for the sale price than any clever wording.
5. 🧪 Do a dry run on one item. Pick something low stakes for the first attempt. You are learning where it pauses, where it asks, and where your particular eBay category has a fiddly required field.

Step 1: the brief

Everything good about this flow comes from the brief. Vague in, vague out. Give it your rules once, at the start, and it stops asking you the same five questions per item.

I'm selling some things I no longer use and you're going to help me list them on eBay. Here are my standing rules for everything in this session, so you don't need to ask me again each time.

I'm in [your city, country] and selling in [currency]. Condition wording should be honest: describe wear plainly and never call something mint if there's a mark. Shipping is [flat $X within your country / calculated / local pickup only], and I [do / do not] ship internationally. I want the item sold within [7 / 14 / 30] days, so price for a realistic sale in that window rather than the highest price anyone has ever got. Returns are [accepted within 30 days / not accepted].

Acknowledge these rules back to me in three lines, then wait. I'll send you the first item.

Step 2: what is it actually worth

This is the step people skip and it is the one that changes what you earn. Asking "what is this worth" gets you a guess from training data. Asking it to go and look gets you a number from this week's market.

Here's the item: [drag in your photos, and add anything the photos can't show, e.g. "JBL Flip 5, works perfectly, small scuff on the base, no box, charger included"].

First tell me exactly what it is, including brand and model, and say how confident you are. Then open eBay in this browser and search completed and sold listings for that model in similar condition, in my country, and read the actual sold prices rather than the asking prices. Come back with the range sold items are landing in, the price you'd list at to sell inside my deadline, the price I'd be leaving money on the table below, and one line on what's driving the number (box, accessories, condition, demand).

If you can't find enough sold comparables, say so plainly instead of estimating.

Step 3: let it fill the whole form

Now the part that saves the weekend. Claude opens the eBay listing form and works through it field by field while you watch: title, category, item specifics, description, price, shipping, photos.

Use the price we agreed and create the eBay listing for this item now. Open the sell form in this browser and fill it in completely, working through it field by field.

For the title, use the words buyers actually search for: brand, model, key spec, condition. Fill in every required item specific, and if you're unsure of a value, ask me instead of guessing. Write the description as four to six short lines covering what it is, its condition including the flaw I mentioned, what's included, and why it's worth buying, in a normal friendly tone with no sales hype. Set the price, the shipping option and the returns setting from my rules above, and attach the photos from the folder I gave you.

Stop before publishing. When it's filled in, tell me what you entered in each field and flag anything you had to guess, then wait for me to review it and press the list button myself.

Your 60 second review

You are the last check. Read the filled form with these four in mind, because these are the four that cost real money when they are wrong.

Then you press the list button. eBay's own creating and managing listings help pages are the place to check anything category-specific, since fee and item-specific rules vary by category and by country.

Step 4: the part after the listing

Selling does not end at publish, it ends when someone pays. The buyer messages are the second reason people abandon a declutter, so hand those over too.

Here's the listing we just posted and the lowest price I'll actually accept: [paste the listing and your floor price].

Draft me short, human replies to the five messages I'll definitely get: is it still available, will you post it today, what's your lowest, will you hold it, and why are you selling it. Then give me a simple negotiation script: how to answer a lowball without being rude, what to counter with, and the exact line that closes it politely at or above my floor.

Keep every reply to two or three sentences, the kind of thing I'd genuinely text, with no exclamation marks and no salesperson energy.

What this will not do

1. 🙅 It will not publish for you. Publishing is a high-risk action, so it stops and asks. Treat that as the design working, not a missing feature.
2. 🧾 It will not handle payment or shipping labels. Money movement and financial sites are off limits to the extension by design. You do the payout side.
3. 🤖 It will not solve CAPTCHAs. If eBay throws one, you clear it and tell Claude to continue.
4. 🎯 It will not know your item better than you do. If it is a limited edition, a rare colourway or has a repair history, say so in the brief. It reads the photo, not the story behind it.

Proof

Claude Help Centre, get started with Claude in Chrome
Claude Help Centre, the Claude in Chrome permissions guide
Anthropic on Claude for Chrome: plan availability, site permissions, approval before high-risk actions, and blocked site categories
eBay Help, creating and managing listings