The Maton Agent Toolkit enables MCP integration across agent frameworks to call Maton APIs via function calling, with TypeScript support. This repository provides an MCP server for HubSpot that lets developers expose HubSpot API actions as MCP actions, enabling agents to perform HubSpot operations through function calling. To run the HubSpot MCP server, use: npx -y @maton/mcp hubspot --agent --api-key=YOUR_MATON_API_KEY. You can bootstrap all actions or specific ones with --actions=all or --actions=create-contact,list-contacts, etc. Authentication is via a MATON_API_KEY passed on the command line or set in environment variables. Claude Desktop users can configure mcpServers with a small JSON snippet to run the HubSpot server. The HubSpot MCP server exposes standard HubSpot operations, including creating, retrieving, listing, searching, merging, updating, and deleting contacts and deals (e.g., create-contact, get-contact, list-contacts, search-contacts, merge-contacts, update-contact, delete-contact, create-deal, get-deal, list-deals, search-deals, merge-deals, update-deal, delete-deal). The README also enumerates a broad set of API actions across many apps. While focused on HubSpot, the toolkit is TypeScript-enabled and inspired by Stripe’s Agent Toolkit, and is not a completeMaton API.