🤖 Overview

jyxobot is the web crawler operated by Jyxo s.r.o., a Czech internet company that runs the regional search engine Jyxo.cz (now redirecting to Seznam.cz after 2019 but historically independent). Its primary purpose is to index publicly available web content for the Jyxo search engine, providing search results tailored to Czech and Slovak users. The bot has been active since at least the early 2000s and is considered a non-aggressive, well-behaved crawler within the search ecosystem.

🌐 Technical Behavior

jyxobot employs standard HTTP GET requests to recursively fetch web pages, following links in a breadth-first crawl pattern. According to historical data from user-agent logging communities (e.g., WebmasterWorld and Czech hosting forums), it typically requests one page every few seconds, with an average crawl rate of 10–50 requests per hour per domain. The bot uses IPv4 addresses from the Czech Republic, often from the ASN of Jyxo (AS2852, SEZNAM). However, after Jyxo's merger with Seznam in 2019, the crawler may now also operate from Seznam's IP ranges (AS43070). It supports HTTP/1.1 and identifies itself via the User-Agent header as "jyxobot/1.0". It does not use JavaScript rendering and only crawls static HTML pages.

📋 robots.txt Compliance

Official documentation from the now-archived Jyxo webmaster pages (via Wayback Machine) stated that jyxobot fully respects robots.txt directives. It checks the robots.txt file before each crawl session and will obey Disallow rules. No evidence of ignoring crawl delays or disallow paths has been reported in public webmaster forums. The bot also respects Crawl-Delay directives if present.

🔍 Detection Indicators

The only known User-Agent string is "jyxobot/1.0". The bot does not send other custom headers (like X-Robots-Tag). It may also appear as "Mozilla/5.0 (compatible; jyxobot/1.0; +http://jyxo.cz/napoveda.html)" in some logs. Behavioral fingerprint: low request frequency, no concurrent connections per domain, and requests originate from Czech IP ranges. Server admins can identify it via IP geolocation and the distinct User-Agent.

📊 Data Usage

Collected data is used exclusively for building and updating the Jyxo search index. The index powers the Jyxo.cz search engine, which historically served search results for Czech and Slovak websites. The data is not used for AI training, analytics, or any secondary purpose. According to Jyxo's privacy policy (archived), only publicly accessible text content is stored, and personal data is not intentionally collected.

⚙️ Rate Limiting Policy

While jyxobot is polite by default, web application administrators may choose to rate-limit it to prevent any accidental resource exhaustion, especially on low-traffic servers. Rate limiting is a standard precaution because even well-behaved crawlers can cause load spikes if multiple pages are crawled simultaneously across different crawl cycles. A threshold-based block (e.g., 100 requests per minute per IP) is recommended to protect server stability without blocking legitimate indexing.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.