
Explains how Chrome DevTools Protocol works under the hood and shows how to drive a browser via raw WebSocket messages, giving builders the low-level knowledge needed to debug or extend tools like Puppeteer, Playwright, and browser-use agents.
“CDP is the control surface that gives external programs access to Chromium’s pages, network stack, JavaScript runtime, input system, debugger, and performance instrumentation.”
“At Browserbase, we’ve learned a lot about the protocol, spending years worth of engineering hours trying to tame it’s imperfections.”
“If your code controls Chromium, CDP is somewhere underneath it.”
“CDP started as the plumbing behind Chrome’s DevTools , not as a general automation API.”
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