User-Agent
Identifies the client software.
Request header (sent by clients) other
How it works
API owners use it to contact integrators and track SDK versions. Include your app name and a contact URL.
Example
User-Agent: acme-sync/2.1 (+https://acme.example/contact)
See it live: send any request in Endpoint Client and open the Headers tab, where every response header is explained. Specification: RFC 9110.