Currently, the cost rate can be cleared exclusively via the web version as the API call to update the project requires the cost rate object to have an integer value of >=0
"costRate": {
"amount": INPUT INTEGER THATS GREATER OR EQUAL TO 0,
"since": "2024-01-01T00:00:00Z"
}
I understand it would be useful to have a null option to clear the rate via the API, and I’ve submitted a feature request on your behalf.
If you are having issues with newly created projects having 0 as the cost rate, please contact support@clockify.me