HubSpot integration services

The CRM API: object endpoints for contacts, companies, deals, tickets, products, line items and the Revenue Hub objects, plus properties, associations v4, search and batch. Since March 2026 HubSpot ships date-based versions such as /2026-09/ each March and September, supported for at least 18 months, while v3 endpoints keep working. We build on the current dated version and keep the version string in one place.

Yes, and it is the most common HubSpot request we see. HubSpot owns leads, companies and deals; the ERP owns customers, items, orders, invoices and credit. We map the deal and its line items to the ERP order, store the ERP IDs on the HubSpot records, and send invoice status and balances back. HubSpot’s own NetSuite and Business Central sync apps cover standard objects; we build a custom sync for subsidiaries, approval steps, custom objects or tax and pricing rules. Our NetSuite and HubSpot and Business Central and HubSpot pages carry the field maps.

Yes. HubSpot’s QuickBooks Online data sync app matches contacts to customers, products to products and services, and invoices and credit memos in either direction; changes leave HubSpot within minutes and return from QuickBooks every 30 minutes. It cannot connect a QuickBooks sandbox, and most non-US QuickBooks versions require tax on synced invoices, which HubSpot’s invoice sync does not support. For those cases, and for Xero, Zoho Books or Tally, we build a custom sync; see our QuickBooks and HubSpot page.

Yes. HubSpot’s Shopify data sync app syncs contacts and products in both directions, companies only on Shopify Plus, and orders and abandoned checkouts one-way from Shopify into HubSpot orders and carts; metafields are not supported. When you also run an ERP, the store, HubSpot and the ERP must agree on who owns customers and orders. We design that three-way flow on HubSpot’s orders API, which HubSpot documents for the Shopify and NetSuite case; see our Shopify and HubSpot page.

Yes. The Zendesk app on the HubSpot App Marketplace, built by Zendesk with about 4,000 installs, adds Zendesk ticket activity to the HubSpot contact timeline and creates contacts from ticket requesters; it is one-way into HubSpot. If HubSpot tickets or deals must open Zendesk tickets, or priority, SLA and organization fields must map both ways, we build that on the two APIs with webhooks on each side. Our HubSpot and Zendesk page lists the flows.

Start with Data Sync when a HubSpot-built app exists for your system and its default object pairs fit: it is included in every plan, checks for changes every five minutes and needs a Data Hub subscription only for custom field mappings. Use a marketplace or iPaaS connector when Data Sync lacks your system. Choose a custom build for custom objects, line-item and tax logic, ERP subsidiaries, approval steps, or a reconciliation report finance can sign off. We often combine them: Data Sync for contacts, a custom service for orders and invoices.

A private app gets 100 requests per 10 seconds in a Free or Starter account and 190 in Professional or Enterprise; the account gets 250,000, 625,000 or 1,000,000 requests a day. Each API limit increase adds 1,000,000 a day and raises the burst to 250, at most twice. Search is capped at five requests a second and 10,000 results per query. Batch endpoints take 100 records per call, so a nightly sync of 50,000 records costs about 500 calls, and webhook deliveries do not count.

Yes. Custom objects such as subscriptions, assets or locations require an Enterprise subscription of one of the hubs, and how many you may create depends on your subscription per HubSpot’s Product & Services Catalog. Below Enterprise we model extra data with custom properties (up to 1,000 per object), association labels (up to 50 per object pair) and, where it fits, deals or tickets in a dedicated pipeline.

Integrations authenticate with a private app access token, HubSpot’s newer account-level service keys, or OAuth for apps installed in several accounts. Each carries only the scopes you grant, such as crm.objects.deals.read, and private app tokens rotate with a 7-day overlap. HubSpot hosts accounts on AWS in the EU (Germany), the US, Canada or Australia; the region is set at sign-up and paid accounts can migrate. Analytics data and marketplace apps can still process data in the US.

Yes. HubSpot’s remote MCP server at mcp.hubspot.com has been generally available to all accounts since April 13, 2026. Claude, ChatGPT and other MCP clients connect over OAuth 2.1 with PKCE and act under the connecting user’s HubSpot permissions, reading most CRM objects and writing contacts, companies, deals, tickets, line items, products and activities; invoices, orders and quotes are read-only there. AIONDATA builds a custom MCP server when an assistant must also see the ERP or store behind HubSpot, or when writes need an approval step.

Configuring Data Sync or a marketplace app usually takes days to a couple of weeks, plus the app’s own fee where one applies. A custom two-way sync of companies, deals, orders and invoices with one ERP or accounting system usually takes a few weeks including testing in a developer test account or sandbox. Several HubSpot accounts, ERP subsidiaries, custom objects or a store in the loop typically take two to three months. Enterprise is needed for custom objects and sandboxes, Data Hub for custom field mappings and workflow webhooks.

No. AIONDATA is an independent integration consultancy, not a HubSpot Solutions Partner and not certified by HubSpot. We are Bay Area-led, based in San Ramon, California, with engineering in Noida, India, and our delivery processes are ISO 9001:2015 and CMMI Level 3 certified. You keep the code, the mapping document and the runbook, so your HubSpot partner or in-house admin can maintain the integration.