Move to stable API

[Matthiee]

Stable API

Move towards stable API provided by FMP.

See https://site.financialmodelingprep.com/developer/docs/stable

Plan

• Create new v1 base branch
  • Update readme to reflect the API being used
• Convert all endpoints to the new stable
• Move to correct categories Update API categories to align with documentation again #137
• Create long-lived legacy branch (for hotfixes)
• Release v1

[marcpiulachs]

Hi, thanks for your work, the old URL is no longer valid and the library no longer works, any plan to fixing or updating it? thanks!

[Matthiee]

Hi @marcpiulachs, I didn't start working on it. However, I quickly tried some endpoints that the library uses and they still appear to work. Can you create a new issue and give some examples that are no longer working.

[marcpiulachs]

Thanks for your quick response. When making this request:

var result = await _client.CompanyValuation.GetCompanyProfileAsync(symbol);

I'm getting this result :

Data [CompanyProfileResponse] =
null
Error [string] =
"Forbidden - {\n "Error Message": "Legacy Endpoint : Due to Legacy endpoints being no longer supported - This endpoint is only available for legacy users who have valid subscriptions prior August 31, 2025. Please visit our subscription page to upgrade your plan or contact us at https://site.financialmodelingprep.com/developer/docs/pricing\"\n}"
HasError [bool] =
true

Probably your account is older that August 31/2025 and you don't get this restriction. Hope it helps to debug

[Matthiee]

Thank you, @marcpiulachs. I have a pretty old account, and I'm using that one for testing the endpoints.

I'll start working on the migration to the new stable API very soon.