Bedrockbot-UA
Bedrockbot-UA is a training crawler operated by Amazon. Its job is to read public web pages and feed that content into a machine-learning pipeline that trains future versions of the model.
Unlike a search-engine crawler, a training crawler does not send users back to your site. The content is consumed once, baked into the model, and shows up later in the model's responses. There is usually no citation and no referral traffic.
If Amazon ships a new model version, you will likely see Bedrockbot-UA traffic spike for a few weeks while it gathers fresh data, then quiet down again.
See Bedrockbot-UA on your own site
Match the User-Agent header on incoming requests against the pattern below.
regex
Verify by IP
For higher confidence, also verify the source IP against the operator's published ranges. UA strings can be spoofed; IP ownership is harder to fake.
Renders JavaScript
No
IP verification
Published IP ranges
Crawl frequency
Periodic, broad
Honors robots.txt
Yes
Honors Crawl-delay
No
Amazon runs 38 bots in total. Each one is a separate user-agent so you can allow or block them independently.
Live-Fetch AI
11- Amzn-User
- Amazon Bedrock AgentCore Browser (AP Northeast)
- Amazon Bedrock AgentCore Browser (AP South)
- Amazon Bedrock AgentCore Browser (AP Southeast 1)
- Amazon Bedrock AgentCore Browser (AP Southeast)
- Amazon Bedrock AgentCore Browser (EU Central 1)
- Amazon Bedrock AgentCore Browser (EU West 1)
- Amazon Bedrock AgentCore Browser (US East 1)
- Amazon Bedrock AgentCore Browser (US East 2)
- Amazon Bedrock AgentCore Browser (US West 2)
- Amazon Buy For Me
Training Crawler
7- Amazonbot
- AmazonProductDiscovery
- bedrockbot
- Amazon Kendra
- Amazonbot-Video
- Bedrockbot-UAYou are here
- Rufus-Bot
Brand Intelligence
3Agentic Browser
3AI Search Index
2Generic Crawler
2DevOps & Monitoring
2Shopping Bot
2Search Engine
1Task Automation
1Ad Verification
1Ads Network Bot
1Link Unfurler
1AI Coding Tool
1Should I let Bedrockbot-UA through?
There's a real trade-off here. Training crawlers consume content without sending users back. Decide whether the trade for being in the model is worth your bandwidth. If Amazon actually drives traffic or citations back to you, letting it through usually pays for itself. If it just consumes bandwidth, block it.
Does blocking Bedrockbot-UA affect my Google rankings?
No. Bedrockbot-UA collects training data, not search-index pages. Your classical search rankings stay intact. The actual trade is whether you want your content folded into the next model release.
How do I confirm a request is really from Bedrockbot-UA?
Two checks. The User-Agent header should match a known Bedrockbot-UA string, and the request's source IP should fall inside Amazon's published ranges. The User-Agent alone is trivially spoofable, so the IP check is what gives you confidence. Amazon publishes the ranges so you can validate at the CDN or edge.
What happens to my content if I let Bedrockbot-UA fetch it?
It gets pulled into Amazon's training pipeline and stored. Whether and how it influences a future model release is rarely disclosed. The only real lever you have on the outcome is what you allow at fetch time.
How is Bedrockbot-UA different from Amazon's other bots?
Amazon splits work across multiple user-agents so site owners can decide on each one independently. Training crawlers, live-fetch agents, search indexers, and agentic browsers each get their own name. Worth scanning the rest of the Amazon family above to see which ones actually matter for your site.
What's the cleanest way to control Bedrockbot-UA?
Two layers. Robots.txt for the polite crawlers that read it, and rules at your CDN or edge for the ones that don't. Rankly's Agent Experience handles both from a single config, so you can allow, block, rate-limit, or serve a stripped-down version per bot. Agent Analytics handles the observation half so you know which bots are actually worth a rule.
Verify everything above against the operator's own documentation.