{"product_id":"gated-mcp-server-in-n8n-for-claude-chatgpt-crm-read-write-tools","title":"Gated MCP Server in n8n for Claude \u0026 ChatGPT CRM Read\/Write Tools","description":"\u003ch3\u003eSecure MCP Server in n8n so Claude \u0026amp; ChatGPT can safely read\/write your business data\u003c\/h3\u003e\n\u003cp\u003eThis n8n automation exposes an authenticated MCP server endpoint that lets MCP clients (like Claude Desktop or ChatGPT) look up customer and order information and write back notes, tasks, meetings, and email drafts—using Google Sheets, Google Calendar, Gmail, and Slack.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eRuns a gated MCP server endpoint\u003c\/b\u003e in n8n, protected by a \u003cb\u003eheader token\u003c\/b\u003e, and waits for tool calls from an MCP client.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eReads CRM-style data from Google Sheets\u003c\/b\u003e so the client can:\n    \u003cul\u003e\n      \u003cli\u003eFind customer records\u003c\/li\u003e\n      \u003cli\u003eCheck order status\u003c\/li\u003e\n      \u003cli\u003eReview stock levels\u003c\/li\u003e\n      \u003cli\u003eView open invoices\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003ePulls upcoming meetings\u003c\/b\u003e from \u003cb\u003eGoogle Calendar\u003c\/b\u003e within a provided time window, with an optional text query.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eWrites back follow-up information\u003c\/b\u003e by appending customer notes and follow-up tasks into dedicated \u003cb\u003eGoogle Sheets\u003c\/b\u003e tabs (Customers, Orders, Inventory, Invoices, Notes, Tasks).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eCreates customer email drafts\u003c\/b\u003e in \u003cb\u003eGmail\u003c\/b\u003e and \u003cb\u003eposts notifications to a Slack channel\u003c\/b\u003e for your account team.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSupport or sales staff use Claude\/ChatGPT to quickly answer: “What’s the status of this order, and what invoices are open?”\u003c\/li\u003e\n  \u003cli\u003eDuring account management, the AI drafts a Gmail reply and logs next steps (notes + tasks) into Google Sheets.\u003c\/li\u003e\n  \u003cli\u003eWhen planning follow-ups, the AI retrieves Google Calendar meetings for a time range and schedules outreach accordingly.\u003c\/li\u003e\n  \u003cli\u003eYour team receives Slack notifications whenever an AI-generated draft or follow-up is created.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cb\u003eMCP server authentication:\u003c\/b\u003e header token with a long random value\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eGoogle integrations:\u003c\/b\u003e OAuth2 for Google Sheets and Google Calendar\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003eMessaging:\u003c\/b\u003e OAuth2 for Gmail (drafts) and Slack (channel notifications)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cb\u003en8n nodes referenced:\u003c\/b\u003e if, code, gmail, slack, switch, sticky note\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAfter activation, copy the MCP server URL from the trigger and configure it in your MCP client along with the same header token.\u003c\/p\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45850717061299,"sku":"N8N-18118","price":60.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/apCiKDmkoqr3F8xiVvNPQ_35roEsGx.png?v=1786871546","url":"https:\/\/buyflowscripts.com\/products\/gated-mcp-server-in-n8n-for-claude-chatgpt-crm-read-write-tools","provider":"N8N Commerce","version":"1.0","type":"link"}