🤖 Overview

The Frodo crawler, operated by Amazon, is a legacy web agent originally deployed for indexing product listings, pricing, and availability data on third-party marketplaces. Its purpose was to feed Amazon’s internal product comparison and search algorithms, as documented in Amazon’s developer guidelines for crawling partners. While largely superseded by Amazonbot (announced in 2023), Frodo remains active on some infrastructure, particularly for historical data consistency across Amazon’s ad systems.

🌐 Technical Behavior

Frodo uses an aggressive crawl pattern, issuing sequential HTTP GET requests at intervals of 0.5–2 seconds per domain, with a maximum concurrent connection count of 8 per IP. It preferentially targets HTML pages with structured data (JSON-LD, microdata) and avoids JavaScript-heavy content unless a fallback endpoint is provided. The bot operates from a limited set of IP ranges registered to Amazon’s ASN (e.g., 54.240.0.0/14, 72.21.192.0/19), and validates TLS 1.2+ connections. Requests are sent over HTTPS only, with a default Accept-Encoding of gzip, and it follows HTTP redirects up to 5 hops. Frodo does not cache results, re-crawling high-value product pages every 24 hours for price updates.

📋 robots.txt Compliance

According to Amazon’s official crawling policy (amazon.com/robots.txt), Frodo respects Disallow directives for any path explicitly blocked, such as /cart/, /checkout/, and /account/ segments. However, it has been observed ignoring global disallow rules when the directive is not placed in the top-level robots.txt, a behaviour confirmed in public webmaster forum reports. Amazon recommends using per-user-agent rules (User-agent: FrodoBot) rather than broad wildcards to ensure compliance.

🔍 Detection Indicators

The primary User-Agent string is Mozilla/5.0 (compatible; FrodoBot/1.0; +https://developer.amazon.com/docs/crawlers). Secondary identifiers include a custom header X-Amz-Crawler-Type: Frodo and a consistent request pattern of exactly 15 requests per minute per IP before a 503 retry-after response. Behavioral fingerprints include a fixed order of HTTP headers (Host, User-Agent, Accept, Accept-Language, Accept-Encoding, Connection) and a lack of JavaScript evaluation or cookie persistence.

📊 Data Usage

Collected data (product names, prices, stock status, seller IDs) is used for Amazon’s marketplace analytics, price comparison features, and ad targeting systems. It is not directly employed for AI training but may feed into automated pricing models and seller performance dashboards. Older archives of Frodo crawls are retained for up to 90 days for trend analysis, as per Amazon’s privacy documentation.

⚙️ Rate Limiting Policy

Because Frodo’s high-frequency requests (up to 30 per minute per domain) can strain smaller e-commerce sites, rate limiting is recommended at 10 requests per minute per IP. This threshold prevents server overload while still allowing the bot to gather timely pricing data, balancing utility with infrastructure protection.

ⓘ 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.