OpenClaw WhatsApp: How to Lock Your Bot to One Specific Group

The first time I added OpenClaw to a WhatsApp group, it replied to every single message. My friend sent "lol" and the bot wrote a three-paragraph response. Someone shared a meme and it started analyzing the image. My phone was blowing up. Then people started DMing my number directly because OpenClaw uses your WhatsApp account, not a separate bot number. The bot was happily chatting with complete strangers. I turned it off within 10 minutes. The fix took another 10 minutes once I figured out the config. Here's exactly how to lock your OpenClaw bot so it only responds in one specific group, only when mentioned, and ignores everything else. The Problem: OpenClaw Talks to Everyone OpenClaw doesn't have its own WhatsApp number. It piggybacks on yours. That means every DM to your number hits the bot, every group you're in becomes a potential chat room, and the bot eats API tokens on messages you never wanted it to see. If you're running Anthropic's API, that "lol" response probably cost you