We won't be writing code, but we can guide you in using the HubSpot APIs.
The Contacts API allows you to create contact records in your HubSpot CRM, but it cannot retrieve contacts from Webflow. For that, you would need a way to get contacts out of Webflow via an API. This may prove to be a problem, as the only publicly documented APIs I can find for Webflow are for their CMS. (There don't appear to be any CRM endpoints.)
If you were able to access Webflow "contact" objects via an API, you would need to build a middleware integration to place and translate calls between the two systems. This will require development skill and/or resources which this Forum cannot provide.
Please let me know if I have misunderstood your question.
We won't be writing code, but we can guide you in using the HubSpot APIs.
The Contacts API allows you to create contact records in your HubSpot CRM, but it cannot retrieve contacts from Webflow. For that, you would need a way to get contacts out of Webflow via an API. This may prove to be a problem, as the only publicly documented APIs I can find for Webflow are for their CMS. (There don't appear to be any CRM endpoints.)
If you were able to access Webflow "contact" objects via an API, you would need to build a middleware integration to place and translate calls between the two systems. This will require development skill and/or resources which this Forum cannot provide.
Please let me know if I have misunderstood your question.
Please don’t share production or developer API keys on this forum. Anyone who has a key has full access to the corresponding account.
I have removed the hapikey value from your example but it's been visible on this public forum for several hours, so I strongly recommend deactivating that API key and creating a new one, per these steps.
It looks like you are attempting to POST form data to the Create a new contact endpoint from the browser. It is not possible to submit this request client-side. Like most HubSpot APIs, the Contacts API does not support CORS/AJAX requests.
If you're trying to pass form data to HubSpot, you can use this Forms API endpoint, which accepts CORS/AJAX requests and does not require authentication.