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

Pass "Token e99508baf0f34b21dbccfc5a7cad7256513329fd" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token e99508baf0f34b21dbccfc5a7cad7256513329fd'