https://community.hubspot.com/t5/APIs-Integrations/How-to-integrate-third-Party-API-on-Hubspot-Website-form/m-p/1104969#M80161 <P>Hi&nbsp;<a href="https://community.hubspot.com/t5/user/viewprofilepage/user-id/895215">@RKallepalli</a>,</P> <P>&nbsp;</P> <P>You can use the "onFormSubmit" event and make a call to a serverless function when the form is submitted. In order to use <A href="https://developers.hubspot.com/docs/guides/cms/content/data-driven-content/serverless-functions/overview" target="_blank" rel="noopener">serverless functions</A> in HubSpot, you would need an Content Hub Enterprise plan.&nbsp;</P> <P>&nbsp;</P> <LI-CODE lang="markup">&lt;script&gt; window.addEventListener('message', function(event) { if (event.data.type === 'hsFormCallback' &amp;&amp; event.data.eventName === 'onFormSubmit') { // your code here } }); &lt;/script&gt;</LI-CODE> <P>&nbsp;</P> Thu, 06 Feb 2025 15:55:56 GMT evaldas 2025-02-06T15:55:56Z https://community.hubspot.com/t5/APIs-Integrations/How-to-integrate-third-Party-API-on-Hubspot-Website-form/m-p/1104689#M80143 <P>How I can integrate a thirdparty API on form submission on Hubspot website?</P><P>&nbsp;</P><P>Do I need to subscribe any plan?</P><P>I did not find any docs. Where can I find the docs on thirdparty API integration on Website.</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 06 Feb 2025 06:54:31 GMT https://community.hubspot.com/t5/APIs-Integrations/How-to-integrate-third-Party-API-on-Hubspot-Website-form/m-p/1104689#M80143 RKallepalli 2025-02-06T06:54:31Z https://community.hubspot.com/t5/APIs-Integrations/How-to-integrate-third-Party-API-on-Hubspot-Website-form/m-p/1104969#M80161 <P>Hi&nbsp;<a href="https://community.hubspot.com/t5/user/viewprofilepage/user-id/895215">@RKallepalli</a>,</P> <P>&nbsp;</P> <P>You can use the "onFormSubmit" event and make a call to a serverless function when the form is submitted. In order to use <A href="https://developers.hubspot.com/docs/guides/cms/content/data-driven-content/serverless-functions/overview" target="_blank" rel="noopener">serverless functions</A> in HubSpot, you would need an Content Hub Enterprise plan.&nbsp;</P> <P>&nbsp;</P> <LI-CODE lang="markup">&lt;script&gt; window.addEventListener('message', function(event) { if (event.data.type === 'hsFormCallback' &amp;&amp; event.data.eventName === 'onFormSubmit') { // your code here } }); &lt;/script&gt;</LI-CODE> <P>&nbsp;</P> Thu, 06 Feb 2025 15:55:56 GMT https://community.hubspot.com/t5/APIs-Integrations/How-to-integrate-third-Party-API-on-Hubspot-Website-form/m-p/1104969#M80161 evaldas 2025-02-06T15:55:56Z