MCP server - Cube — ContextQMD

Cube MCP (Model Context Protocol) lets MCP-compatible AI clients connect to Cube over HTTPS using OAuth.

<Note>

The MCP server is available on Premium and Enterprise plans. Users need the Viewer role or higher to interact with the MCP server.

</Note>

What is MCP?

Model Context Protocol (MCP) is an open standard that enables AI assistants to securely connect to external data sources and tools. The Cube MCP server acts as a bridge between your AI assistant and Cube's analytics platform, allowing you to ask data questions directly from your coding environment.

Overview

Cube hosts an MCP server endpoint for your tenant. MCP clients connect over HTTPS and authenticate via OAuth.

Endpoint: https://<cube-mcp-server-host>/api/mcp
OAuth discovery: https://<cube-mcp-server-host>/.well-known/oauth
OAuth flow: Authorization Code + PKCE, client_id = cube-mcp-client, scope = mcp-agent-access
Deployment selection: On connect, the client lands on the tenant default deployment set by your admin (or the first deployment you can access). Clients can also target a specific deployment and agent per request — see Select a deployment and agent.

Admin setup

Prerequisites

Before enabling MCP, make sure you have:

Admin privileges in your Cube instance
An active Cube tenant
MCP server URL configured

1) Confirm MCP server URL

MCP uses your Cube MCP server host. If the URL isn’t configured, the MCP page will show “MCP configuration is unavailable.”

2) Configure deployment access

Go to Admin → MCP Server and use the Deployment Access section to control which deployments MCP clients can reach and where they connect by default:

Default deployment — the deployment MCP clients connect to unless they explicitly request another one. Choose Automatic (first available) to land each user on the first deployment they can access.
Limit available deployments — when off (the default), MCP clients can access all deployments the user is permitted to see. Turn it on to restrict MCP to a chosen subset.
Available deployments — when the limit is on, pick the deployments MCP clients may access. Selecting none disables MCP access for the account.

<Note>

Deployment access is always intersected with the user's role-based permissions — clients can only reach deployments the authenticated user is allowed to see.

</Note> <Frame> </Frame>

Connect to Claude

Claude Code

bash

claude mcp add --transport http cube-mcp-server https://<cube-mcp-server-host>/api/mcp

Authentication and usage flow:

Run the command copied from Admin → MCP Server → AI Clients → Claude Code.
Then run Claude and use /mcp to list available servers.
Select cube-mcp-server and choose Authenticate.
A browser window opens for authentication.
Log into Cube and choose your tenant.
Return to Claude Code and start asking questions.

Claude (Team/Enterprise)

Open Settings in Claude (web or desktop).
Scroll to Integrations and click Add more.
Use:
- Integration name: Cube MCP
- Integration URL: https://<cube-mcp-server-host>/api/mcp
Complete the OAuth flow to grant access.
Enable tools in any new chats.

Use Cube in Claude chat

Start a new chat in Claude.
Open the tools menu and enable Cube MCP (use the tools search if you have many tools).
Ask a data question. Toggle the tool off to disable it for that chat.

Claude (Desktop app)

json

{
  "mcpServers": {
    "cube-mcp-server": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "--transport", "http", "https://<cube-mcp-server-host>/api/mcp"]
    }
  }
}

Connect to Cursor

Add the MCP endpoint under Tools & MCP Settings, then complete the OAuth flow.

json

{
  "mcpServers": {
    "cube-mcp-server": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "--transport", "http", "https://<cube-mcp-server-host>/api/mcp"]
    }
  }
}

Connect to Codex

Preferred (CLI):

bash

codex mcp add cube-mcp-server --url https://<cube-mcp-server-host>/api/mcp

If this is your first time using MCP in Codex, enable the feature in ~/.codex/config.toml:

editorconfig

[features]
rmcp_client = true

Manual setup:

editorconfig

[features]
rmcp_client = true

[mcp_servers."cube-mcp-server"]
url = "https://<cube-mcp-server-host>/api/mcp"

Then run codex mcp login cube-mcp-server to authenticate.

Connect to other MCP clients

For any MCP-compatible client:

Add a new server with the MCP endpoint.
The client will auto-discover OAuth and prompt for authentication.
Complete the OAuth flow to grant access to your Cube deployment.

Select a deployment and agent

An MCP client is not locked to a single deployment for the whole session. After connecting, it can discover the deployments and agents you can access and target a specific one on each request.

Three tools work together:

listDeployments — discovery. Returns every deployment you can access via MCP (already filtered by the admin's deployment-access settings and your permissions) and each deployment's agents. Use it to find valid deploymentId and agentId values before calling chat. Every deployment offers an Auto agent (agentId: null) in addition to any configured agents.
chat — accepts two optional selection parameters:
- deploymentId — the deployment to use for this request. When omitted, the chat uses the deployment from the current session (the default resolved at connect time).
- agentId — the agent to use for this request. When omitted or null, the deployment's Auto agent is used. Pass a specific agentId to route to a configured agent.
loadQueryResults — paginates through the results of a previous query on the same deployment context.

A typical client workflow:

<Steps> <Step title="Connect"> Complete the OAuth flow. The session is scoped to the tenant default deployment (or the first one you can access). </Step> <Step title="Discover"> Call `listDeployments` to see the available `deploymentId` / `agentId` values. </Step> <Step title="Chat"> Call `chat` with your `input`, optionally passing `deploymentId` and/or `agentId` to target a specific deployment or agent. Omit both to use the session default deployment with its Auto agent. </Step> </Steps>

Requests are always validated against the admin's deployment-access settings. A deployment that is outside the allow-list — or that you don't have permission to see — is rejected with a 403 Forbidden (Deployment <id> is not available via MCP for this account), so neither listDeployments nor the chat selection can reach an excluded deployment.

Available actions

Discover accessible deployments and agents with listDeployments
Chat with a Cube AI agent over MCP, optionally targeting a specific deployment and agent
Query data and request analysis
Receive responses directly in your MCP client

Example workflows

Ask a data question in natural language
Get SQL generated by the agent
Request summaries, trends, and insights

Troubleshooting

MCP configuration is unavailable: Configure the MCP server URL.
MCP OAuth integration is not configured: Enable MCP in Admin → Team & Security → OAuth Integrations.
No deployments available / MCP access is disabled: In Admin → MCP Server → Deployment Access, make sure Limit available deployments is off, or that at least one deployment is selected and the user has permission to access it.
Deployment <id> is not available via MCP for this account (403): The requested deployment is excluded by the deployment-access allow-list or by the user's permissions. Call listDeployments to see which deployments are reachable, or adjust the allow-list in Admin → MCP Server → Deployment Access.