Your AI Agent Is Wasting Tokens on Pages That Haven't Changed

You built a web monitoring agent. It checks competitor pricing every hour, scans news feeds for signals, watches supplier pages for stock changes. It's working. And it's burning your API budget - on nothing. --- ## The problem nobody talks about Here's what most web monitoring agents do on every run: 1. Send the full content to the LLM 3. Ask "what changed?" The page hasn't changed. The LLM doesn't know that. It reads 1,500 tokens of HTML, thinks carefully, and tells you: nothing changed You paid for that. Every hour. For every.