M3rvteyj0exaioijkv1qilcjhbgcioijiuzi1nij9m4t3c1... 📢

: Defines the token type and the hashing algorithm (like the "HS256" in your string).

The string you provided, m3rvteyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9m4t3c1... , appears to be an encoded . Specifically, the middle section eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9 decodes to a standard JWT header: Type: JWT Algorithm: HMAC SHA256 (HS256) m3rvteyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9m4t3c1...

To see what information is stored inside a specific (non-sensitive) token, you can use a tool like the JWT.io Debugger . : Defines the token type and the hashing

: Your string may be a functional access token. Never share full JWT strings publicly , as they can sometimes be used to hijack active sessions or expose private user data. m3rvteyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9m4t3c1...