We strive to improve our service every day by delivering the best search experience possible. To achieve this, we collect data using web crawlers ("robots") and user agents that gather and index information from the internet, operating either automatically or in response to user requests. Webmasters can use the following robots.txt tags to manage how their sites and content interact with Perplexity. Each setting works independently, and it may take up to 24 hours for our systems to reflect ch...| docs.perplexity.ai
Headless Chrome bots powered by Playwright have become a go-to tool for bot developers due to their flexibility and efficiency. Playwright’s cross-browser capabilities, coupled with an API similar to Puppeteer and the lightweight nature of Headless Chrome, make it a powerful choice for tasks like web scraping, credential stuffing,| The Castle blog
AI bots, AI scrapers, AI agents—you’ve seen these terms thrown around in product announcements, Hacker News posts, and marketing decks. But behind the hype, what do these bots actually do? And more importantly, how are they changing the fraud and bot detection landscape? This article introduces| The Castle blog
As per industry standard, Anthropic uses a variety of robots to gather data from the public web for model development, to search the web, and to retrieve web content at users’ direction. Anthropic uses different robots to enable website owner transparency and choice. Below is information on the three robots that Anthropic uses and how to set your site preferences to enable those you want to access your content and limit those you don’t.| support.anthropic.com
In every HTTP request, the user agent header acts as a self-declared identity card for the client—typically a browser—sharing information about the software and platform supposedly making the request. It usually includes details like the browser name and version, operating system, and rendering engine. But crucially, this identity| The Castle blog
The good old days where bots used PhantomJS and could be detected because they didn’t support basic JavaScript features are over. It’s 2025, and the bots have never been as sophisticated as today. They leverage anti-detect automation frameworks, residential proxies and CAPTCHA farms. Even basic bots that leverage| The Castle blog
