Belby
Run by Scalar Labs
How to detect Belby
Belby signs its requests, so you detect it by verifying the cryptographic signature on each request. A valid signature proves the request came from Scalar Labs; a copied user agent without the signature does not.
- Detection method
- SignedThe agent signs its requests, so its identity is verified cryptographically.
- Signals that identify it
- CryptographicA signed request verified cryptographically
- BehavioralAutomated clicks, typing and page flow instead of a person's
Every signal Verisoul checks for Belby
Belby signs its requests, so we verify who it is cryptographically, then check the rest of the session.
- Used
Cryptographic
A signed request verified cryptographically
- Not used
Network
Not needed to identify it
- Not used
Device
Not needed to identify it
- Used
Behavioral
Automated clicks, typing and page flow instead of a person's
How often you'll see it
Very uncommon
Rare, brand new, or not seen on Verisoul traffic yet
Questions about Belby
How do you detect Belby?
Belby signs its requests, so you detect it by verifying the cryptographic signature on each request. A valid signature proves the request came from Scalar Labs; a copied user agent without the signature does not.
What is Belby?
Belby is an AI agent from Scalar Labs that works in a browser and signs its requests.
Does Belby identify itself?
Yes. Belby signs its requests cryptographically, which is the strongest way an agent can identify itself.
Can a bot pretend to be Belby?
Not convincingly. A bot can copy Belby's user agent, but without Scalar Labs signing keys its requests fail verification and it is not labeled Belby.
How common is Belby?
Very uncommon. Rare, brand new, or not seen on Verisoul traffic yet.
What does the Verisoul API return for Belby?
Every session Verisoul identifies as Belby carries an agent block with id "belby", name, provider, type "ai_agent", detection_method "signed" and the detection_signals used (cryptographic, behavioral). Build rules on the id, type and detection method.