https://community.hubspot.com/t5/APIs-Integrations/Connect-to-Hubspot-CRM-via-API-as-a-third-party/m-p/537275#M49231 <P>Hi&nbsp;<a href="https://community.hubspot.com/t5/user/viewprofilepage/user-id/291850">@Renpai</a>&nbsp;,</P> <P>&nbsp;</P> <P>There are several options. Regarding the package your partner is using..&nbsp;<BR />But I think you want to create an App in your developer account and link this one to their environment with oAuth.</P> <P>&nbsp;</P> <P>You can also create an API key in the Hubspot environment of the partner and use that one.</P> <P>But that isn't recommended, but to start much easier.</P> <P>&nbsp;</P> <P>After that you talk about Leads, but where do they store leads. In the Contacts object with a Status or?<BR />Then you can use the Contacts API.&nbsp;</P> <P>&nbsp;</P> <P><A href="https://developers.hubspot.com/docs/api/overview" target="_blank">https://developers.hubspot.com/docs/api/overview</A>&nbsp;<BR />The most information about the current API you can find here. Inclusing CURL request that you can add to your postman collection.</P> <P>&nbsp;</P> <P>Regards Ronald</P> Mon, 06 Dec 2021 14:49:11 GMT RMones 2021-12-06T14:49:11Z