Cloudflare Containers

Container sandbox management.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Container Initialize: Start or restart the container. Use this tool to initialize a container before running any python or node.js code that the user requests ro run.
  • Container Ping: Ping the container for liveliness. Use this tool to check if the container is running.
  • Container Exec: Run a command in a container and return the results from stdout. If necessary, set a timeout. To debug, stream back standard error. If you're using python, ALWAYS use python3 alongside

What data it sees

Do you need an account

No: the server works without sign-in

Container sandbox management. Spin up isolated development environments on Cloudflare.

How to connect

How to connect Cloudflare Containers to Claude

The server address to paste into Claude settings:

https://cloudflare-containers.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Cloudflare Containers to ChatGPT

The server address to paste into ChatGPT settings:

https://cloudflare-containers.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Cloudflare Containers to Cursor

The server address to paste into Cursor settings:

https://cloudflare-containers.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (7)

Raw names from tools/list. Only developers need these.

container_initializeStart or restart the container. Use this tool to initialize a container before running any python or node.js code that the user requests ro run.
container_pingPing the container for liveliness. Use this tool to check if the container is running.
container_execRun a command in a container and return the results from stdout. If necessary, set a timeout. To debug, stream back standard error. If you're using python, ALWAYS use python3 alongside pip3
container_file_deleteDelete file in the working directory
container_file_writeCreate a new file with the provided contents in the working direcotry, overwriting the file if it already exists
container_files_listList working directory file tree. This just reads the contents of the current working directory
container_file_readRead a specific file or directory. Use this tool if you would like to read files or display them to the user. This allow you to get a displayable image for the user if there is an image file.