Please use JWT authentication if possible. More details in the online documentation.

Pass "Token 3650c53cace6096dc2ae8f51112614cf2cba211a" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 3650c53cace6096dc2ae8f51112614cf2cba211a'