0n3
MCP servers · HubSpot · MCP server + skill

Connect Claude Code to HubSpot

One line gives Claude Code your HubSpot account as tools: 6 endpoints, contacts, companies, deals, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.

Get the line for Claude CodeConnect HubSpot first

Three steps

  1. Create a free 0n3 account and connect HubSpot. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
  3. Ask Claude Code: whoami. Then: "Create a contact in HubSpot".
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.

What Claude Code can then do in HubSpot

Contacts · Manage contacts3
Create a contactPOST /crm/v3/objects/contacts
List contactsGET /crm/v3/objects/contacts
Search contactsPOST /crm/v3/objects/contacts/search
Companies · Manage companies1
Create a companyPOST /crm/v3/objects/companies
Deals · Manage deals2
Create a dealPOST /crm/v3/objects/deals
List dealsGET /crm/v3/objects/deals

HubSpot in other AI clients

Claude (desktop & claude.ai) + HubSpotconnectorChatGPT + HubSpotconnector · GPT actionCodex CLI + HubSpotMCP serverGemini CLI + HubSpotMCP serverCursor + HubSpotMCP serverVS Code (Copilot) + HubSpotMCP serverWindsurf + HubSpotMCP server

Claude Code with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints