ChatGPT MCP Servers: The Complete List (2026)
ChatGPT speaks MCP. Since OpenAI adopted the Model Context Protocol at DevDay in October 2025, the same servers that power Claude and Cursor can power ChatGPT — either through the apps OpenAI has already packaged for you, or through a custom connector you paste in yourself. Below is the running list of MCP servers worth connecting to ChatGPT, grouped by what they do, with an honest note on which ones are genuinely official, what each plan unlocks, and the one limit that survives every connection on the page.
If you want the protocol itself explained first, What Is MCP? does it in a sentence and a diagram. If you want the setup walkthrough rather than the catalog, How to Use MCP Servers in ChatGPT covers Developer Mode step by step. This page is the map.
Three different things get called “ChatGPT MCP”
They are constantly conflated, and which one you want changes the whole answer:
- Built-in apps (formerly connectors). OpenAI packaged the integration; you click connect and sign in. No URL, no Developer Mode. Gmail, Google Drive, SharePoint, GitHub and the rest live here.
Connectors, apps, plugins: same mechanism, three names in eighteen months. The December 2025 rename made connectors into apps, and the July 2026 directory merge made apps into plugins. Screenshots and guides written at any point in that window are still describing the same thing.
- Custom MCP connectors. You paste a remote MCP server’s HTTPS URL into ChatGPT yourself. This is what people mean by “adding an MCP server to ChatGPT,” and it’s the only path for a server OpenAI hasn’t packaged.
- Apps SDK. The builder-side path: how a company ships an MCP-backed integration that any ChatGPT user can install, with in-chat UI and a review process. If you’re publishing rather than installing, that’s your lane.
There’s now a fourth word in the mix.
OpenAI's app directory became a plugin directory on July 9, 2026, shared between ChatGPT and Codex. Plugins are packages that can carry apps, skills, or app templates. It is a repackaging of how things are listed and discovered, not a change to the MCP plumbing underneath.
You can browse it as the plugin directory in OpenAI’s own help center. If you’re keeping score: plugins (2023) died, connectors became apps (2025), and apps now ship inside plugins (2026). The plumbing has been MCP the whole time since DevDay.Which plans get custom MCP servers
The built-in apps are broadly available. Custom MCP connectors sit behind Developer Mode, and that’s the gate that catches people:
- Free — no custom connectors. Built-in apps only, and a limited set of those.
- Plus and Pro — Developer Mode available, custom MCP servers allowed.
- Business, Enterprise, and Edu — available, but a workspace admin can switch Developer Mode off org-wide or allowlist specific connectors. If your toggle is missing, that’s usually policy rather than a bug.
Developer Mode is web-first and still labelled beta. OpenAI has also moved the toggle more than once. It used to live under Settings → Connectors → Advanced, and it is now under Settings → Security and login. The server itself goes in from Plugins → Add → Create MCP App, and that menu item only appears once Developer Mode is on. Two things stay true across every version: ChatGPT never launches a server itself. It connects to an HTTPS endpoint, so a local npx/node stdio server has to be hosted or run behind OpenAI’s Secure MCP Tunnel. And ChatGPT asks you to confirm before any write action, every conversation.
Plan limits bite here in a second way: tool calls burn messages, so an agentic loop that chains half a dozen server calls eats through your allowance far faster than a plain chat does.
The MCP servers worth connecting to ChatGPT
Every link goes to a full breakdown of that app’s server — official or community, what it exposes, how to connect it, and where it stops.
CRM & Sales Salesforce · HubSpot · Pipedrive · Attio · Apollo · GoHighLevel · Gong
Email & Marketing Gmail · Outlook · Mailchimp · Klaviyo · ActiveCampaign · Instantly · Google Ads · Meta Ads · Semrush · Ahrefs · Customer.io · Resend · SendGrid
Productivity & Docs Notion · Airtable · Coda · Google Sheets · Google Docs · Google Slides · Confluence · TickTick · Contentful
Project Management Asana · Monday · ClickUp · Trello · Basecamp · Wrike · Todoist · Jira · Linear · Shortcut
Communication & Messaging Slack · Microsoft Teams · Discord · Telegram · WhatsApp · Zoom
Customer Support Zendesk · Freshdesk · Freshservice · Intercom · PagerDuty
Files & Storage Dropbox · Box · Google Drive · SharePoint
E-commerce & Payments Shopify · Stripe · Square · Wix · Webflow · PandaDoc · WooCommerce · Amazon
Accounting & Finance QuickBooks · Xero · YNAB · Brex
Analytics Google Analytics · Google Search Console · Apify
Social & Content LinkedIn · YouTube · Reddit · Canva · Adobe · Miro · Figma · Instagram
Forms, HR & Suites Typeform · Rippling · Zoho · Ashby
For the protocol-wide view that isn’t ChatGPT-specific, MCP Servers: The Complete List is the parent page.
Official versus “there’s a GitHub repo” — the distinction that matters
A vendor marketing page about MCP is not a shipped server, and this trips people constantly. Before you paste a URL into ChatGPT, know which kind you’re pasting. From our per-app research:
Genuinely official, vendor-hosted — Notion (mcp.notion.com), Stripe, Intercom, Square, Airtable, Asana, Canva, HubSpot, Salesforce, Slack, Trello, Typeform, Xero, Shopify, PagerDuty, Monday, Dropbox.
Official but genuinely awkward to switch on — Gmail is real but Developer-Preview-gated behind a Google Cloud project and OAuth setup, and it has no send tool at all. Outlook exists from Microsoft but is not a toggle. QuickBooks is official from Intuit and still not plug-and-play. Google Drive is official and more gated than most people expect. Adobe is official but fragmented across three separate servers.
No official server — anything you find is community — Google Sheets, Zendesk, WhatsApp (nothing from Meta), LinkedIn. Community servers can be excellent, but you’re trusting someone else’s code with an OAuth token, and you’re hosting it.
The general rule when a first-party endpoint exists: use it. Point at mcp.notion.com rather than a third-party wrapper of Notion’s API.
Many of these don’t need MCP at all in ChatGPT
Worth checking before you go near Developer Mode: a lot of the apps above are already packaged as built-in ChatGPT apps, which means no URL, no hosting, no OAuth scopes to reason about. If a one-click version exists, take it.
Our per-app breakdowns cover what ChatGPT can genuinely do with each one today — including where it’s read-only:
Gmail · Google Calendar · Google Drive · Google Sheets · Google Docs · Outlook · OneDrive · SharePoint · Notion · Slack · Microsoft Teams · GitHub · Linear · Jira · Asana · Trello · ClickUp · Monday · HubSpot · Salesforce · Pipedrive · Stripe · Shopify · QuickBooks · Xero · Airtable · Zendesk · Intercom · Canva · Figma · Zoom · Todoist
The full catalog, with plan gates and what each one can write, is in ChatGPT Connectors: The Complete List.
Two capability notes that decide whether any of this is useful to you. On email:
The question is not whether they can send, it is what happens when nobody is at the keyboard. ChatGPT sends from Gmail and Outlook on confirmation. Claude sends from Gmail, and from Microsoft 365 once an admin turns write tools on, minus attachments. Carly is the one that answers the message that arrived at midnight, from all of the mailboxes you gave it.
On calendar:ChatGPT can put something on your Google Calendar when you ask. It does not document taking it off again, and the write path is conditional: re-authorize anything connected before mid-June 2026, get an admin to enable the app on a Workspace org, and keep company knowledge off. Carly books, moves and cancels on every calendar you connect, Google and Outlook, without an admin toggle in the way.
Running a bigger deployment? ChatGPT for Business covers admin controls, and company knowledge covers what ChatGPT does with connected data across a workspace.
The limit every server on this page shares
Connect all of them and the same thing is still true, because it’s a property of the protocol rather than any one server:
Connecting an MCP server used to give an assistant reach and nothing else. ChatGPT changed that with automations that fire on MCP events, yet the standard is still a draft, and OpenAI's docs list just three apps whose events can start a task: Gmail, Slack and GitHub. Everything else still waits to be asked. Carly covers more of it: its workflows start from an incoming email, a booking, a CRM change or a new spreadsheet row, and it can check any app with an API, then report back in the same chat.
Which means, concretely:
- Almost every action is one you typed. Unless its app ships event support, an MCP server sits there until asked. It will happily create the Notion page — after you tell it to, in a chat, in words.
- One app per server. The Slack server knows Slack. Getting a closed deal to create a doc and post to Slack and book the kickoff means wiring three servers and hoping ChatGPT juggles them in one turn.
- You own the plumbing. Hosting, OAuth scopes, token rotation, and the blast radius of write access are yours for anything that isn’t a packaged app.
- Write actions need confirmation. Useful as a safety rail, fatal to anything unattended: ChatGPT prompts before every write, so nothing completes while you’re away.
Scheduled Tasks closed part of this in 2026 — ChatGPT will now run a prompt on a timer against your connected accounts, unattended. That’s real, and it kills the old “only works in a chat you have open” complaint. But it moved the line rather than erasing it:
Give Claude's scheduled tasks a time and they will run. Give them something that just happened and they will not. ChatGPT goes further, but only on web and mobile, and only for apps whose plugin supports events: OpenAI documents Gmail, Slack and GitHub and has not named the rest. A lead moving stage, a form landing, an invoice clearing: neither one has a published way to start on it. Carly starts on all of it.
Where the event trigger comes from
That gap — react to something happening, across several apps, without anyone typing — is what Carly is for. Carly connects to thousands of apps, most of the ones on this page included. No server to host, no remote URL to keep alive, no Developer Mode toggle to hunt for.
The difference is what starts the work:
- When a deal is marked won in your CRM → create the onboarding doc, post it in the right Slack channel, and book the kickoff — the moment it happens, not on the next hourly sweep.
- When an invoice goes past due in QuickBooks → draft the follow-up, log the task, ping the account owner.
- When a form comes in → enrich the contact, route it, and reply — while the lead is still warm.
Carly is free for Zapier-style workflows, with AI agents from $35/month, so the plumbing between your apps isn’t metered.
MCP in ChatGPT is the right tool when you want to ask an app something, or make an edit while you’re sitting there. Carly is for when the work should happen whether or not anyone opened a chat.
FAQ
Does ChatGPT support MCP servers? Yes. OpenAI adopted the Model Context Protocol at DevDay in October 2025, and ChatGPT connects to MCP servers two ways: built-in apps that OpenAI packaged for you, and custom connectors where you paste a remote server URL yourself. Custom connectors require Developer Mode on a paid plan.
How do I add an MCP server to ChatGPT? Turn on Developer Mode under Settings → Security and login. Then open Plugins, click Add, choose Create MCP App, paste the server’s HTTPS URL (or pick a Secure MCP Tunnel for a private server), choose the authentication type, and create it. The full walkthrough has the steps.
Can ChatGPT run a local MCP server?
Not by launching it. Anything whose setup instructions start with npx or node is a local stdio server, and ChatGPT won’t start one. OpenAI’s Secure MCP Tunnel runs a small client on your machine or network that wraps the server and connects it to ChatGPT without a public URL; otherwise you host it. Claude Desktop and Cursor launch local servers directly.
Is MCP in ChatGPT the same as in Claude? Same protocol, different surface. A well-built remote server works in both. The differences are practical: ChatGPT reaches local servers only through a tunnel and confirms every write action, while Claude launches local servers directly. Carly’s own server works with either — see Carly MCP.
Do I need Plus for ChatGPT MCP servers? For custom MCP connectors, yes — Developer Mode requires a paid plan (Plus, Pro, Business, Enterprise, or Edu), and on workspace plans an admin can disable it. Built-in apps reach further down, though the Free tier gets a reduced set.
Can an MCP server in ChatGPT trigger an automation? Only if its app supports it. Since September 2026, supported plugins can use MCP events to start an automation when something changes in a connected app, but OpenAI’s docs list just three supported events: new Gmail messages, Slack channel messages and GitHub pull request activity. Nothing documented starts because a deal closed or an invoice went past due. For that you need an automation layer like Carly.
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