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

Pass "Token 66797d032682288beb17b31bcd9cb325e1bef7fa" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 66797d032682288beb17b31bcd9cb325e1bef7fa'