How do you form a group nobody can admit they're in?
Arun invoiced a design agency ₹1,20,000 in January. It's August. He is in a 4,000-member designers' Discord. He could post the agency's name right now and warn everyone. He won't, and you already know why: the freelancer who publicly names a client stops getting briefs. He'd pay for it alone, and everyone else would benefit. Here's the part that makes it a systems problem rather than a sad story. Three other people in that same Discord are owed money by that same agency. None of them knows. Each one is running the same arithmetic Arun is, arriving at the same answer, and saying nothing. Four people who together have real leverage. Individually, none of them can afford the first move. I built an agent for this over a hackathon weekend. The interesting part wasn't the AI. It was that every obvious solution destroys the thing you're trying to protect. The obvious version, and why it dies "Just make a private channel for victims of bad clients." To join, you say who burned you. Now the group knows. One screenshot and Arun is on a list. "Okay, collect reports centrally and only reveal at a threshold." Better. This is roughly how Callisto Vault handles assault reports, and it's a good pattern. But it reveals the group to its own members at the threshold. Four people now know each other's names and amounts. Four times the leak surface, arriving exactly when things get tense. The requirement I ended up with was stricter than I expected: Nobody is exposed. Not to the channel, not to the accused, and not to each other — not even after it works. Which sounds impossible, because how do four people coordinate if they can't know who they are? They don't. The agent knows. Nobody else does. The public board that can't name the client Here's what actually appears in the Discord: PICKET · matter #1 > "invoiced in January, still chasing in August" ₹50k–2L · 180d+ overdue 🟩⬜⬜⬜ 1/4 joined [ JOIN ] One sentence Arun wrote himself. An amount band , not his figure. A counter. The agency's