LessonWe have not tested this ourselves
Heads up: Facebook Marketplace may be blocking agents
The poster had Grok Bot watching Facebook Marketplace for deals. He says that since October 16 every search in the agent's browser returns no listings, even after logging in again, while his phone shows them fine. He says others report the same, and Facebook hadn't commented when he posted.
AgentGrok Bot
The lesson: A selling or deal-hunting setup can stop working overnight if a site starts blocking agents. Check it still works before you rely on it.
Where this comes from
Original post by @LeonardCampagna on X, Oct 18, 2026. We rewrote it in our own words. The result is what the poster reports.
Read the original