Integrate the HubSpot API.Caddi writes and runs the integration for you.
HubSpot has a REST API. Self-serve for any developer; rate limits scale with the installing account's tier (Free/Starter, Professional, Enterprise).
- 99%of agent runs complete successfully
- ~45 minon average to build your first agent
- 1M+back-office tasks completed
The connection is a project before it does anything.
Before the first record moves: an app registration, credentials, token refresh, and somewhere to host and monitor the code. Private apps get 100 requests/10s (Free/Starter) or 190/10s (Pro/Enterprise) with daily caps of 250k/625k/1M, and public OAuth apps get 110 requests/10s per installing account.
Register an app, store HubSpot credentials, refresh tokens and code around the rate limits.
Connect your HubSpot account once. Caddi holds the connection.
The job doesn't stop at HubSpot.
An intake, a filing or a client update also runs through email, documents and the other systems your team works in. The HubSpot API only reaches HubSpot.
Each extra system is another API, another set of credentials, another integration to own.
One automation runs across every tool the job touches, each through its API.
Someone has to own the code.
API versions change, fields get added and your process moves.
A developer patches and redeploys the integration each time.
The person who does the work updates it by showing or describing the change. Every automation is reviewed before it runs in production, and every run is logged.
What the HubSpot API gives you
- Type
- REST (JSON)
- Authentication
- OAuth 2.0 (public apps) or static access token (private/single-account apps)
- Who can get access
- Self-serve for any developer; rate limits scale with the installing account's tier (Free/Starter, Professional, Enterprise).
- What it covers
- CRM objects (contacts, companies, deals, tickets), associations, marketing and other hub data.
- Limits
- Private apps get 100 requests/10s (Free/Starter) or 190/10s (Pro/Enterprise) with daily caps of 250k/625k/1M, and public OAuth apps get 110 requests/10s per installing account.
Official docs: developers.hubspot.com. Checked September 2026. Vendors change access terms, so confirm with HubSpot before you build.
When to build the HubSpot integration in-house
When you have engineers and the integration is your product, or you need one narrow sync between two systems and someone to own it. When the goal is getting HubSpot work off someone's desk, the build is the slow part, and Caddi does it for you.
What teams usually want the HubSpot API for
Lead-to-onboarding
When a HubSpot deal closes, Caddi opens the onboarding workspace, sends the welcome packet, and creates the onboarding tasks.
Meeting note write-back
Caddi turns each meeting transcript into a structured HubSpot activity and opens follow-ups on the right deal.
Document fan-out
When a signed contract returns, Caddi files it, updates the HubSpot deal, and notifies the deal owner.
Everything Caddi does with HubSpot.
HubSpot API questions
Does HubSpot have an API?
Yes. HubSpot has a REST API, authenticated with OAuth 2.0 (public apps) or static access token (private/single-account apps). The official documentation is at https://developers.hubspot.com/docs.
How do I get access to the HubSpot API?
Self-serve for any developer; rate limits scale with the installing account's tier (Free/Starter, Professional, Enterprise).
Does the HubSpot API have rate limits?
Private apps get 100 requests/10s (Free/Starter) or 190/10s (Pro/Enterprise) with daily caps of 250k/625k/1M, and public OAuth apps get 110 requests/10s per installing account.
Can I connect HubSpot to my other tools without writing code against its API?
Yes. With Caddi you show the HubSpot task once, the way you'd train a new hire, and Caddi builds it as verified code that runs across HubSpot and the other tools the job touches. Steps that need a person's judgment are handed to Copilot or Claude, and Caddi monitors those too.
Do I need a developer to automate HubSpot with Caddi?
No. There is no integration code for you to write or maintain. Every automation Caddi builds for HubSpot is reviewed before it runs in production, and every run is logged.