Agent Interface
REST API v3WebhooksPrivate Apps (OAuth alternative)
What an agent can do
- ✓Read and write Contacts, Companies, Deals, Tickets
- ✓Create and manage email sequences
- ✓Search CRM records with filters
- ✓Log activities (calls, emails, meetings)
- ✓Manage workflows and automation triggers
- ✓Read analytics and attribution data
- ✓Manage lists and segmentation
What it can't do
- ✗Send marketing emails directly from API (requires Marketing Hub workflow)
- ✗Access A/B test results in real-time
- ✗Modify HubSpot CMS templates via API
- ✗Access calling recordings without HubSpot Calling API
Auth Model
Private App Token (preferred)OAuth 2.0
Builder Notes
No official MCP server. Private App tokens are the recommended auth for agents — simpler than OAuth, scoped to specific API categories. CRM v3 API is well-documented with search and batch operations. HubSpot API is generous with rate limits (100 req/10 sec for most endpoints).
Sources
Last verified: 2026-03-01