Zuck approved Muse's auto-negotiation feature knowing bots would 'poison' Facebook Marketplace

aarthir · x · 2026-09-21

Relaying @nikitabier's inside anecdote: one of Meta's Muse app launch features was an AI agent that auto-negotiates purchases on Facebook Marketplace. The Marketplace PM knew millions of lowballing bots would eventually kill the product, but the issue was escalated all the way to Zuckerberg, who signed off with: "OK, we'll poison Marketplace…but just a little."

The story is a telling signal of how important AI is to Meta — shipping a feature that damages its own product — and of AI agents beginning to erode human-centric marketplaces. Replying VC aarthi argues buyer-side auto-negotiation is the inevitable future of marketplaces anyway.

Related event: Meta's Muse App Launches AI Auto-Haggling Feature for Marketplace(2 posts)→

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