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

Pass "Token 0025978707d6270bb235b54e5aef42c9714f6a5e" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 0025978707d6270bb235b54e5aef42c9714f6a5e'