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

Pass "Token 2b90df58fa45de89fc63692edd845ec84f081ac4" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 2b90df58fa45de89fc63692edd845ec84f081ac4'