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

Pass "Token e46e11bba601e05773952c86b2af76a83d34b4cf" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token e46e11bba601e05773952c86b2af76a83d34b4cf'