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

Pass "Token 65981d3910d5180306a63b4c4720a515a26984d5" in the Authorization header to use it

Example with curl:

curl -X GET https://wger.de/api/v2/routine/ \
     -H 'Authorization: Token 65981d3910d5180306a63b4c4720a515a26984d5'