Browserbase
Operated by Browserbase
Cryptographically verifiable
Agent infrastructure
Intermediary access
What it does
Hosted browser infrastructure that other people's agents run on. Many different end users drive the same platform.
How to identify it
- User agent
- None published. This agent is not distinguishable from an ordinary browser at the user agent layer.
- Request signing
- Publishes 2 keys at https://www.browserbase.com/.well-known/http-message-signatures-directory
- IP ranges
- Not published.
- robots.txt
- Not applicable.
- First seen
- 2025-08
Worth knowing
A verified signature tells you the request came through Browserbase. It does not tell you who was driving, which is the open problem with intermediary access.