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List unused stuff with a hard floor; human still owns payment creds

Skeptics will not hand payment credentials to an agent — selling is a safer first experiment.

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What hurt

Trupti (@truptinatu) ran the same sell prompt on Instinct and Grok Bot: list unused items on Facebook Marketplace, Craigslist, and eBay, set a competitive price above a floor, fill descriptions, monitor inbox, negotiate hard, and only sell when the floor is met. She keeps payment credentials off the table as the skeptic's fence. Grok Bot handled captcha / MFA / rate limits better in her parallel test; Instinct locked her out of eBay once. Tip/workflow with a clear approval fence.

What to install or create

Give the bot listings + floor price + negotiate-hard rules. Let it draft and monitor. You keep payment credentials and final accept. Prefer marketplaces where browser MFA is the hard part.

Bots

  • Marketplace Seller

    Lists items, drafts copy, monitors inbox, negotiates toward floor; stops before accept/sold.

Plugins

  • None on day one. Follow the first-run steps.

Files

  • Item photos, descriptions, and a written floor price per item.

Routines

  • None on the first run. Watch one manual pass first.

The prompt

This is a tip, not a pasteable system prompt. The author did not publish one. Follow the first-run steps.

First run

  1. 1Read the thread starting at https://x.com/truptinatu/status/2097082179847409742 (1/3–3/3).
  2. 2List unused items with photos and a hard floor price each.
  3. 3Tell the bot: list on FB Marketplace / Craigslist / eBay, price competitively above floor, fill descriptions, monitor inbox, negotiate hard.
  4. 4Do not give payment credentials. Review every accept / sold yourself.
  5. 5If a marketplace locks you out, stop and recover the account before retrying.

Approval fence

Never hand payment credentials. Never accept an offer or mark sold without an explicit human yes — even above the floor.

What to tweak

Steal the floor-price sell loop and the no-payment-creds fence. Not a license to auto-accept offers.

Source

Trupti @truptinatu · Original post

Not affiliated with xAI. We did not write this prompt. Third-party template terms still apply.

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