Hi @Iflorez, I think we can not make API calls that are out of the wikimedia domain from our extension, I am also not sure if I get it right, but I created my account on fluxxdev, and I looked at the links you shared, but I was not able to find what API would return the list of grand ids.

Logging in to community.fluxx.io I see a special API group, a forum of sorts akin to one of our Slack channels. This may be the best place to post specific questions.
Grant ID is possible to pull using the API. I posted a question on the documentation thread in that channel, asking for documentation references specific to that sort of pull.

@DSaroyan_WMF shares: Hallowelt was our partner to develop a tool which used the Fluxx API to publish grant applications on Meta. see the code.

Fluxx's Dane Robinson says:
It is possible. However, we don't have any documentation on that specific ask. In our documentation, you would need to leverage the Cross Card Filter section to accomplish this.
API Cross Card filters (and API filtering in general) can be difficult, so I made a video on how to create API Cross Card filters (this also applies to regular filtering on most tables).

Chris Andreen from the MacArthur foundation says:

If you want to do relative filtering on dates on the grant_request model, you can use the following syntax:

https://<yourorg>.fluxx.io/api/rest/v2/grant_request?cols=["id"]&filter={"group_type":"and","conditions":[["grant_approved_date","last-n-months","12"]],"relationship_filter_model_type":"GrantRequest"}

Within the filter parameter, you can change that first parameter to whatever date field you want to query.
"grant_approved"date" or any date will work. This example is specific to months, but there are other relative filters as well:

last-n-days
last-n-weeks
last-n-months
last-n-quarters
last-n-years

In T336603#8875201, @Iflorez wrote:

Chris Andreen from the MacArthur foundation says:

If you want to do relative filtering on dates on the grant_request model, you can use the following syntax:

https://<yourorg>.fluxx.io/api/rest/v2/grant_request?cols=["id"]&filter={"group_type":"and","conditions":[["grant_approved_date","last-n-months","12"]],"relationship_filter_model_type":"GrantRequest"}

Within the filter parameter, you can change that first parameter to whatever date field you want to query.
"grant_approved"date" or any date will work. This example is specific to months, but there are other relative filters as well:

last-n-days
last-n-weeks
last-n-months
last-n-quarters
last-n-years

Thanks @Iflorez, I tried it, I was able to get the list of grant IDs, but the filter is not working, I tried it a lot, and since I was not able to meke the filter parameter to work, I opened a support request on fluxx:
https://fluxxdev.atlassian.net/servicedesk/customer/portal/1/FS-59626?created=true

@ifried I think this task should also be inside the epic T321814, what do you think?

I agree, @cmelo. I have made T321814 the parent task to this ticket.