How to Integrate with the HubSpot API: A Step-by-Step Guide for B2B SaaS Teams (2026)

Integrating with the HubSpot API for B2B SaaS teams involves significant operational complexity beyond merely calling API endpoints, as highlighted in the detailed guide. The process includes setting up a developer account, configuring OAuth scopes, managing webhooks, and handling rate limits, token refresh logic, and multi-account authorization storage. The guide also contrasts direct integration with HubSpot against using Unified's CRM API, which offers a unified API surface to manage OAuth, retries, and schema handling across multiple CRM providers, simplifying integration efforts. While direct integration with HubSpot allows for deep, HubSpot-only features, Unified's approach is beneficial for supporting multiple CRMs with consistent object schemas and usage-based pricing. The decision between direct and Unified integration depends on the scope of CRM support needed and the resources available for maintaining infrastructure.

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