I cannot find the legacy v1 documentation or the v3 documentation. All there is is this now: 2026-03 API reference - HubSpot docs
I cannot find the contacts endpoint documentation or the deals endpoint documenation for either version.
Please advise.
Hey @TDittberner 
I feel your pain. I’m relearning where everything lives, too.
Versions — you can use the toggle to select from the supported versions of an endpoint
To get to the documentation, you need to click the “Related Guide” link:
Which will take you to the documentation for the endpoint, Contacts in this case.
I hope this helps get you moving forward. Have fun building! — Jaycee
Thank you for this. I liked the v1 doc, but the v3 was hard to navigate. This is a nice improvment. I could not find it with google though.
Hey, @TDittberner I agree, adjusting to the new layout will take my brain a little time. But ultimately, I think it’s a massive upgrade. I passed along your feedback to the team that owns the beta docs. Thanks again! — Jaycee