ForeMast function cdsDownload

[SabineBraun]

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I tried to use the ForeMast cdsDownload function but I get the error message "Could not validate login information". I have registered to copernicus and copied the user ID and the Api key (the former has, however, 32 digits instead of 5 shown in the example).
Thank you for your help! Best regards

[SabineBraun]

Thank you for your answer! I have created a .cdsapirc file but where does it have to go? And in what user interface I have to write the commands you have listed? I have not found that ForeMast can directly make use of the .cdsapric file. Thank you again! Am 25.09.2025 um 04:55 schrieb Aqib Siddiqui: Most likely the problem is wrong credentials format or the wrong Copernicus service. ForeMast cdsDownload uses the Copernicus Climate Data Store API and it expects your CDS account id and CDS API key to be available to the cdsapi client. Fix it like this Create a file named .cdsapirc in your home folder with these two lines url: https://cds.climate.copernicus.eu/api/v2 key: your_username:your_api_key Replace your_username and your_api_key with the values from your CDS account. Note the key must be username then a literal colon then the api key. Save the file and restrict permissions chmod 600 ~/.cdsapirc Make sure you registered the correct service and activated your account via the confirmation email from the Climate Data Store. The api key may be long and not five digits, that is normal. Quick validate the credentials from your machine using curl curl -u "your_username:your_api_key" "https://cds.climate.copernicus.eu/api/v2/resources" If that returns a list of resources your credentials are valid and ForeMast should work. If curl returns an authentication error double check username and api key and that you activated the account email. If you still see Could not validate login information ensure ForeMast is calling the CDS api not the Copernicus Open Access Hub. If ForeMast has a parameter or config for which service to use set it to cdsapi or the CDS endpoint. If ForeMast accepts a direct key argument you can pass the username and api key as username then a colon then key otherwise rely on the ~/.cdsapirc file. If you want I can draft the exact .cdsapirc content and a small Python test using cdsapi for you to run if you find this solution helpfull upvote this and please follow me it boost my confidence — Reply to this email directly, view it on GitHub<#174601 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/BAYN6HFM6QCJ5NMKZYFEQQD3UNKRVAVCNFSM6AAAAACHL5QWYCVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTINJQGUZTEOI>. You are receiving this because you authored the thread.Message ID: ***@***.***>

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