HubSpot CRM
Business Operations Free key (no card)
AuthenticationFree key (no card)
Rate limit100 requests per 10 seconds on free accounts
Documentation: developers.hubspot.com ยท Checked Sep 13, 2026
About
HubSpot CRM is a widely used customer relationship platform with a free tier for up to two users. Its developer API covers contacts, companies, deals, tickets, and engagements. Free accounts get generous API rate limits with private apps for authentication.
Details
Free to start. You may need a free key, but no credit card.
Auth: Free key (no card)
Rate limit: 100 requests per 10 seconds on free accounts
Verified: 2026-09-13
Best for: crm contacts sales-pipeline
Setup
- Create a free HubSpot account from the signup page
- Open your account settings and navigate to Integrations > Private Apps
- Create a private app and assign the CRM scopes you need
- Copy the private app access token
- Send it as an Authorization: Bearer header in API calls
- Start with the /crm/v3/objects/contacts endpoints to read and create contacts
Example
GET https://api.hubapi.com/crm/v3/objects/contacts with header Authorization: Bearer YOUR_TOKENUse cases
- Sync leads from a website form into a free CRM
- Build a lightweight sales dashboard on live deal data
- Automate contact enrichment and follow-up tasks