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

Pass "Token b11ced8e7dad86724efc72a357b6c76c167176a0" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token b11ced8e7dad86724efc72a357b6c76c167176a0'