Discover HubSpot objects
Inspect the connected account’s available tables and columns before selecting contacts, companies, deals or another supported object.
Your connection path
HubSpotChatGPT
Stacksync MCP OAuth
Your assistant works through your Stacksync workspace and its available connections.
First request
“Plan a contact and company replica”
Stacksync MCP · CRM
Connect HubSpot to ChatGPT with MCP.
Bring HubSpot connection discovery, connector actions and sync planning into an AI conversation. Use Stacksync MCP to prepare contact and company mappings, review deal automation, or understand why a HubSpot sync has failed records.
01 / The connection
How HubSpot works with ChatGPT
Bring HubSpot connection discovery, connector actions and sync planning into an AI conversation. Use Stacksync MCP to prepare contact and company mappings, review deal automation, or understand why a HubSpot sync has failed records. Add the Stacksync MCP server to ChatGPT, then use the connection path below.
The server belongs to Stacksync. The available HubSpot operations depend on your connection, permissions, and connector modules.
Explore the HubSpot connector →02 / Capabilities
HubSpot capabilities through MCP
Choose the connection path that fits the job. Your assistant inspects the available tools before configuring or running an action.
Prepare CRM actions
Inspect available HubSpot action modules and their input forms before proposing an individual lookup or update.
Manage contact and deal syncs
Read existing mappings, select table direction and propose edits without creating a second sync for the same records.
03 / Setup
Set up Stacksync MCP in ChatGPT
Connect the MCP server first. Then connect HubSpot using the requirements below.
Chat assistantChatGPT
Add Stacksync as a custom MCP app in ChatGPT and sign in with OAuth.
Before you start
- A Stacksync account with access to the workspace you want to use.
- Permission to add an external MCP server in your AI client.
- A ChatGPT account with Developer mode and custom MCP apps available. The Stacksync guide lists Plus, Pro, Business, Enterprise and Edu; workspace administrators can restrict access.
Enable custom app setup
Open Settings → Apps → Advanced settings and turn on Developer mode. If the option is unavailable, check the account or workspace policy with your administrator.
Create the Stacksync app
Select Create app, name it Stacksync, enter the server URL below and choose OAuth. Complete the Stacksync sign-in and select your default workspace.
https://mcp.stacksync.com/mcpEnable Stacksync in your chat
Select Stacksync from the chat tools menu so the conversation can use its tools. Signing in to ChatGPT itself does not sign you in to Stacksync.
Check your workspace
Ask “List my Stacksync workspaces.” Confirm the workspace before choosing a connector or preparing a change. Connecting the assistant does not start a sync.
Check the connection
Ask “List my Stacksync workspaces.” Select the workspace you want to use, then ask the assistant to inspect the available HubSpot connection and capabilities.
04 / Put it to work
HubSpot workflow prompts
Example prompts for HubSpot in ChatGPT. The outcomes describe what to expect, not results from your account. Review the proposed configuration before running it.
01
Sync management
Plan a contact and company replica
Inspect my HubSpot and PostgreSQL connections, available contacts and companies fields, and existing syncs. Propose a one-way reporting replica with stable HubSpot record IDs and the fields needed to join contacts to companies. Separate any association configuration that I must complete in the web app. Wait for my review before creating or starting the sync.
What to expect
A contact and company reporting design with explicit relationship and setup requirements.
02
Connector actions
Design a closed-deal alert
Inspect the HubSpot and Slack connector modules, connections and existing workflows. Propose a workflow that identifies the closed-won deal condition and prepares a message for the Slack channel I choose. Verify the trigger path and every action from the available forms; flag any step that needs the web app. Show the payload and duplicate-message handling before saving or running it.
What to expect
A proposed deal alert with a verified trigger path and channel-specific message payload.
03
Sync management
Review HubSpot field validation failures
Inspect my HubSpot sync issues and current field mappings. Identify failures caused by property formats, permissions or missing required values. Propose a correction for each group with example affected record IDs. Ask me to choose any retry, revert or ignore operation before executing it.
What to expect
An actionable breakdown of HubSpot property errors without silently discarding updates.
05 / Before you run
Requirements and limitations
What you need
- Connect your AI client to Stacksync MCP, sign in and select the workspace before inspecting its resources.
- Reuse an authorized app connection or open the secure connection link from Stacksync. Enter credentials in the connection form, never in the chat.
- Confirm the HubSpot plan and permissions needed for the selected objects; custom objects require HubSpot Enterprise.
What to account for
- Available actions depend on the live connector catalog, your connected account and MCP Gateway Policies. Inspect the action and its form before using it.
- The published sync list marks Campaigns as coming soon and Feedback Submissions as unsupported. Other objects may require HubSpot plan entitlements.
- Association and per-field direction changes use the Stacksync web app. A duplicate custom field named id is excluded where it conflicts with HubSpot’s record ID.
Your workspace. Your permissions.
OAuth access follows your Stacksync role. Choose read-only access during sign-in when appropriate. Workspace owners can enable “Ask before every change”; it is a configurable setting. Direct connector actions also follow gateway policies.
Read about permissions and approvals ↗If setup does not work
- The MCP server does not appear
- Check your client’s custom MCP settings and any plan or administrator prerequisites. Reconnect using the setup instructions above.
- Your workspace or app is missing
- Verify the Stacksync account and workspace selected during OAuth, then inspect the workspace’s connections. Add missing app credentials through the secure connection flow.
- An action is unavailable or denied
- Inspect the current connector modules and required inputs. Check your workspace role, read-only consent, gateway policy, and the source app’s API permissions.
06 / Common questions
HubSpot MCP questions
Which HubSpot records are supported?
The sync documentation includes contacts, companies, deals, tickets and many other objects. That list describes sync support; the available direct MCP actions must be discovered separately in the connector catalog.
Can I include HubSpot custom objects?
The sync connector documents custom-object support, but the HubSpot account must have the required Enterprise entitlement and the connection must expose the object.
Can the assistant configure HubSpot associations entirely in chat?
It can inspect the sync and prepare the mapping plan. The current sync skill directs association settings and per-field direction to the Stacksync web app.
Reviewed · Product documentation and connector references
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