**TL;DR** robots.txt was built for a simpler web. Today, bots include LLMs, AI agents, price trackers, SEO crawlers, and more. To manage this traffic, the web is moving to a layered access stack—robots.txt for hints, sitemaps for freshness, signature headers for verification, and bot auth tokens for control. This article breaks down how each layer […] The post From robots.txt to Web Bot Auth: The New Machine Access Control Stack appeared first on PromptCloud.
