WaitSpin turns AI-agent wait time into a new developer attention surface. It allows developers to opt into a single sponsor line in supported wait/status interfaces and earn a share of billed impressions, while dev-tool companies can reach developers directly inside their workflow. Unlike traditional ads, WaitSpin operates during AI-agent wait states—the moment between prompt and result—without popups, overlays, or access to code, prompts, or any sensitive data.