Is there a "Clay ID" for each company that I can sync back to my CRM Accounts/Companies?

Yes, Clay provides unique company identifiers through the HG Company ID data point. [clay.com This unique identifier is assigned to each company and helps you easily track and differentiate between businesses. [clay.com When you enrich companies via our API, the response includes a companyid field (e.g., "company_id": 141827591) that serves as a unique identifier for each company. You can use this ID as your reference identifier to sync back to your CRM. Your proposed workflow would work: enrich your CRM accounts through Clay to get the company ID, then match website traffic using this unique identifier instead of domain matching.