Yes. On its own, ChatGPT cannot see Facebook Marketplace listings. Add Secondhand Marketplace from the ChatGPT plugin directory and it can search them for you: say what you want and a city, and you get real listings with prices, photos and links. Free to start, about a minute to set up.
Ask in plain words, the way you would ask a friend: "a solid wood dresser under $200 in Denver", "is $900 fair for this Peloton?", "show me the photos of the second one". ChatGPT runs the search, reads the listings, and answers with the ones that fit.
Facebook Marketplace search is on the free tier: 10 searches a month, no credit card. Pro ($5/mo) raises that to 500 and adds Depop and Poshmark.
About a minute, once
Click Connect on the listing. A Secondhand sign-in window opens. Use your email (we send a one-click link) or Google, then click Allow. That creates your free account, with 10 searches a month and no card needed.
Copy this to start: Find a used Peloton bike under $600 near Austin, TX
Once connected, just talk to ChatGPT
Because by itself it cannot. ChatGPT has no way to open Marketplace listings until you connect a plugin that searches them. Once Secondhand Marketplace is connected and switched on in the chat, ask again and it will search.
Yes. Connect it once, from any browser where you are signed in. After that it works everywhere you use ChatGPT, including the iPhone and Android apps.
No. Searching Facebook Marketplace needs no Facebook login or account. You only sign in to Secondhand with your email or Google.
Mention a city and state in your request, like "near Portland, OR". Results come from that area, the same way Marketplace itself is local. Each search can use a different city.
No. It can only search and read listings. Every listing comes with its link, so contacting the seller and buying happen on Facebook, by you.
Yes to start. The free tier gives you 10 searches a month with no credit card. Paid plans raise the limits and add Depop and Poshmark.
Yes. The same account works in Claude, Perplexity and Gemini. See searching Facebook Marketplace from Claude.