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

Pass "Token 39d9e83545c1410387e34b4b865527fd9c2dfd53" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 39d9e83545c1410387e34b4b865527fd9c2dfd53'