MCP server

CyberTemp MCP server

Give Claude, Cursor, and other AI agents access to disposable inboxes. Free to install — each tool call counts against your CyberTemp plan.

Get your free API key View API docs

The MCP server is free to install. It authenticates with your CyberTemp API key, and any account can create one, Free included. Each tool call counts against your plan's limits; paid plans raise them.

Install in Claude Desktop

Edit claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\)

json

{
  "mcpServers": {
    "cybertemp": {
      "command": "npx",
      "args": ["-y", "@cybertemp/mcp"],
      "env": {
        "CYBERTEMP_API_KEY": "tk_..."
      }
    }
  }
}

Restart Claude Desktop — the new tools appear under the "+" attachments menu.

Install in Cursor

Drop into .cursor/mcp.json in your project or the global Cursor config.

json

{
  "mcpServers": {
    "cybertemp": {
      "command": "npx",
      "args": ["-y", "@cybertemp/mcp"],
      "env": {
        "CYBERTEMP_API_KEY": "tk_..."
      }
    }
  }
}

Other MCP clients

Any MCP client that supports the stdio transport.

bash

CYBERTEMP_API_KEY=tk_... npx -y @cybertemp/mcp

Available tools

Six tools mapped onto CyberTemp's API. Tier gating matches your plan.

Tool	Description	Plan
create_inbox	Allocate a new disposable inbox and return its address.	Any
list_inboxes	List inboxes the agent has created.	Any
read_messages	Fetch messages from an inbox.	Any
wait_for_message	Block until a new message arrives.	Any
extract_otp	Wait for the next message and return just the OTP code.	Core+
delete_inbox	Delete an inbox and its messages.	Any

Try it

A natural-language prompt that exercises the full flow.

Sign me up to example.com using a fresh disposable email,
wait for the verification OTP, and paste the code back into
the signup form.

Start free, upgrade when you need more

Every account can create an API key. Paid plans from €1.99/mo raise rate limits and inbox caps; Elite adds webhooks.

Get your free API key See plans