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HubSpot MCP Server

HubSpot's official hosted remote MCP server (mcp.hubspot.com, GA) for reading and writing CRM objects, properties, owners, and campaigns. OAuth 2.1 + PKCE is mandatory over Streamable HTTP. Replaces the community buryhuang/mcp-hubspot listing. Note: scores other than authentication are a provisional assessment from HubSpot's documentation pending a live tool-level audit.

Overall Score76/100

Score Breakdown

Authentication & Identity1 finding↓23/25
Tool Schema Quality1 finding↓15/25
Permission Granularity1 finding↓17/20
LLM Safety11/15
Data Exposure1 finding↓5/10
Maintenance & Trust5/5

Server Info

Package
https://mcp.hubspot.com
Registry
remote
Maintainer
HubSpotVendor
Category
CRM & Sales
Tags
crmmarketingsaleshostedoauth
Last Scanned
7 Apr 2026

Findings

4 issues

Authentication & Identity

LOWImplements MCP OAuth spec for per-user authentication

Official HubSpot-hosted remote MCP at https://mcp.hubspot.com. OAuth 2.1 + PKCE is required for all connections (no API-key option); an account admin must connect before other users. All actions respect existing HubSpot user permissions, and Activity objects are blocked when the account has sensitive data enabled.

Remediation

Document the required OAuth scopes for each tool.

Tool Schema Quality

MEDIUMTool schemas not independently audited

The hosted server has no public source repository, so tool input schemas, required fields, and parameter constraints could not be verified directly. Provisional score pending a live tool-level audit.

Remediation

Run a live audit against the hosted endpoint to enumerate and score tool schemas.

Permission Granularity

LOWEnforces user permissions; sensitive-data exclusion

All actions respect the connected user's existing HubSpot permissions, and Activity objects are excluded when sensitive data is enabled. Fine-grained per-tool scope classification was not independently verified.

Remediation

Publish per-tool OAuth scope requirements and read/write classification.

Data Exposure

MEDIUMPagination and field selection not verified

Whether list operations paginate and support field selection could not be verified without a live audit of the hosted tool surface.

Remediation

Audit list operations for pagination and field-selection support.

Deploy HubSpot MCP Server securely

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