WBX Sandbox
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Connect ChatGPT or Claude

Give your AI assistant its own cloud computer in about two minutes. You add one URL, sign in to WBX Sandbox, and the assistant can start sandboxes, run code, jobs and batches, and read the results. No API key and no code.

Your MCP server URL https://sandbox.wbx.cz/mcp

Claude

Works on every Claude plan; the Free plan allows one custom connector. On Team and Enterprise plans an organisation Owner adds it once (Organization settings → Connectors → Add → Custom) and everyone then just clicks Connect.

  1. Open Customize → Connectors and click Add custom connector

    In claude.ai or the Claude desktop app.

    Customize Connectors Connectors + Add custom connector

  2. Paste the URL and click Add

    Name it WBX Sandbox, paste https://sandbox.wbx.cz/mcp. Leave the advanced OAuth settings empty – Claude registers itself.

    Add custom connector Name WBX Sandbox Remote MCP server URL https://sandbox.wbx.cz/mcp ▸ Advanced settings – leave empty Add

  3. Sign in to WBX Sandbox and click Allow access

    Claude opens our sign-in page. Approving connects your team (only team owners and admins can approve).

    sandbox.wbx.cz/oauth/authorize Connect Claude Claude is asking for access to WBX Sandbox in your team. It will be able to: create, use and delete sandboxes … Cancel Allow access

  4. In a chat, switch it on and ask

    Click + → Connectors and turn on WBX Sandbox. Then ask for something that needs a computer – see the prompts below.

    Connectors› WBX Sandbox Create a sandbox and compute the 50th Fibonacci number in Python. +

ChatGPT

Custom MCP connectors need Developer mode, available on Plus, Pro, Business, Enterprise and Edu. In a workspace an admin may need to allow it first. OpenAI renames these menus from time to time – if a label differs, look for the same steps nearby.

  1. Turn on Developer mode

    Settings → Apps & Connectors → Advanced settings → Developer mode.

    Settings Apps & Connectors Apps & Connectors Advanced settings Developer mode

  2. Create the connector

    Back in Apps & Connectors click Create. Name: WBX Sandbox, URL: https://sandbox.wbx.cz/mcp, Authentication: OAuth. Click Create.

    New connector Name WBX Sandbox MCP server URL https://sandbox.wbx.cz/mcp Authentication OAuth▾ Create

  3. Sign in to WBX Sandbox and click Allow access

    Same as above – ChatGPT opens our sign-in page.

    sandbox.wbx.cz/oauth/authorize Connect ChatGPT ChatGPT is asking for access to WBX Sandbox in your team. It will be able to: create, use and delete sandboxes … Cancel Allow access

  4. Start a new chat and ask

    Make sure WBX Sandbox is enabled for the chat (from the + menu), then ask. ChatGPT asks you to confirm before it runs actions.

Claude Code

One command, then /mcp inside Claude Code to sign in through the browser:

claude mcp add --transport http wbxsandbox https://sandbox.wbx.cz/mcp

On a server or in CI, skip the browser and pass an API key: add --header "Authorization: Bearer YOUR_API_KEY". Other MCP clients: see SDKs & MCP.

Try these prompts

“Create a sandbox and compute the 50th Fibonacci number in Python.”

“Clone https://github.com/psf/requests, run the test suite and tell me what fails.”

“Download this CSV, make a chart of monthly totals and give me the PNG.”

“Run these 20 scripts as a batch with at most 5 at a time and a $1 limit, then summarise the results.”

If something doesn't work

The assistant doesn't see the tools
Start a new chat and check the connector is switched on for it. In ChatGPT, Developer mode must stay on.
“Only team owners and admins can connect applications”
Ask an owner of your WBX team to approve the connection, or to make you an admin.
How do I disconnect?
Delete the key named “… (connected app)” in API keys, or remove the connector in the assistant.
What does it cost?
Sandboxes and jobs the assistant runs are billed to your team like any other, per second. Set spending limits under Billing.