HubSpot API
HubSpot exposes a broad v3 REST API plus a CRM GraphQL API at developers.hubspot.com, spanning CRM objects, engagements, marketing, CMS, and webhooks. Any portal admin can mint a private app token without approval. Burst limits of 110 to 190 requests per 10 seconds are the main constraint.
Frequently asked questions
HubSpot scores A on Supergood's API Report Card. HubSpot exposes a broad v3 REST API plus a CRM GraphQL API at developers.hubspot.com, spanning CRM objects, engagements, marketing, CMS, and webhooks. Any portal admin can mint a private app token without approval. Burst limits of 110 to 190 requests per 10 seconds are the main constraint.
HubSpot has a workable official integration path. Most engineering teams can build against it directly. Open API: self-serve, documented, with SDKs
HubSpot is a cloud customer platform that unifies CRM, marketing automation, sales engagement, customer service, content management, and commerce/billing into a single Smart CRM foundation.
Vertical: CRM / marketing automation / sales / service (horizontal SaaS, not industry-specific). Marketing teams build landing pages, blogs, and email/SMS campaigns; segment contacts with lists; run lifecycle automations via Workflows; and attribute revenue with Marketing Hub reporting.
HubSpot finished 2025 with 288,706 paying customers across 135+ countries, generated $3.13B in 2025 revenue (up 19% YoY), and is adding 9,000-10,000 net new customers per quarter on 2026 guidance.
Yes, for nearly 300,000 businesses, HubSpot is the system of record for the entire go-to-market dataset: the master contact and company database with custom properties and lifecycle stages, the deal pipeline and revenue forecast, every email/SMS/WhatsApp/call/meeting engagement with timestamps and content, marketing automation enrollment history, lead scoring and attribution, form submissions and landing page conversions, ticket/conversation history across all support channels, knowledge base content, CMS-managed websites and blogs, quotes/invoices/payments via Commerce Hub, consent and subscription preferences (subject to GDPR/CAN-SPAM/CCPA/CASL), and, for Breeze users, AI agent decision audit logs.
Founded June 2006 in Cambridge, MA by Brian Halligan and Dharmesh Shah to commercialize 'inbound marketing.' IPO on NYSE October 2014 at $25/share raising $140M+ (ticker HUBS).
Rate limits cap apps at 110 requests/10s (Free/Starter) up to 190 requests/10s (Pro/Enterprise) per portal, high-volume sync jobs hit ceilings quickly and require backoff/queueing infrastructure. CRM Search API was historically capped at 1 request/second and only recently raised to 4 requests/second, still painfully low for any multi-object lookup workload. Full sourced list under Sources below.
Common alternatives include Salesforce (Sales Cloud / Marketing Cloud / Service Cloud), Microsoft Dynamics 365, Zoho CRM / Zoho One, Adobe Marketo Engage, ActiveCampaign, Pipedrive. Graded alternatives appear under "More from the report card" below.
Supergood's grades measure one thing: can a customer's engineering team get their own data out programmatically? Supergood checks six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and rolls them into a letter grade. Supergood re-verifies grades, and they only move on evidence.
HubSpot scores GOOD on MCP availability. HubSpot publishes an official hosted MCP server at mcp.hubspot.com with read and write access to CRM objects (contacts, companies, deals, tickets, engagements and more), plus a separate local developer MCP server; both reached GA in early 2026. Setup instructions live on developers.hubspot.com.
Yes. HubSpot publishes an official MCP server, so MCP clients like Claude, Cursor, and Codex can connect to it directly. Setup instructions are in the vendor's documentation.