Desk3 MCP Server

Instructions

Implementation Reference

• src/desk3_service/server.py:97-108 (handler)

  The core handler function that makes an HTTP GET request to the Desk3 API endpoint for token circulating supply data given a symbol.

  async def get_token_circulating_supply(symbol: str) -> dict[str, Any]:
      """
      Get token circulating supply and total supply information.
      :param symbol: Trading pair symbol (required), format BTC -> BTCUSDT, ETH -> ETHUSDT
      :return: Token circulating supply and total supply information
      """
      url = 'https://mcp.desk3.io/v1/market/circulating'
      params = {'symbol': symbol}
      try:
          return request_api('get', url, params=params)
      except Exception as e:
          raise RuntimeError(f"Failed to fetch token circulating supply data: {e}")

• src/desk3_service/server.py:578-589 (schema)

  JSON Schema defining the input parameters for the tool, requiring a 'symbol' string matching the pattern for trading pairs.

  inputSchema={
      "type": "object",
      "properties": {
          "symbol": {
              "type": "string",
              "description": "Trading pair symbol (required), format BTC -> BTCUSDT, ETH -> ETHUSDT",
              "examples": ["BTCUSDT", "ETHUSDT", "BNBUSDT"],
              "pattern": "^[A-Z0-9]+$"
          },
      },
      "required": ["symbol"],
  },

• src/desk3_service/server.py:575-590 (registration)

  Registration of the tool in the MCP server's list_tools() handler, including name, description, and schema.

  types.Tool(
      name="get_token_circulating_supply",
      description="Get token circulating supply and total supply information",
      inputSchema={
          "type": "object",
          "properties": {
              "symbol": {
                  "type": "string",
                  "description": "Trading pair symbol (required), format BTC -> BTCUSDT, ETH -> ETHUSDT",
                  "examples": ["BTCUSDT", "ETHUSDT", "BNBUSDT"],
                  "pattern": "^[A-Z0-9]+$"
              },
          },
          "required": ["symbol"],
      },
  ),

• src/desk3_service/server.py:759-772 (handler)

  Dispatch handler in MCP server's call_tool() that validates input, calls the core handler, formats response as JSON, and returns TextContent.

  case "get_token_circulating_supply":
      if not arguments or "symbol" not in arguments:
          raise ValueError("Missing required argument: symbol")
      symbol = arguments["symbol"]
      try:
          data = await get_token_circulating_supply(symbol=symbol)
          return [
              types.TextContent(
                  type="text",
                  text=json.dumps(data, indent=2),
              )
          ]
      except Exception as e:
          raise RuntimeError(f"Failed to fetch token circulating supply data: {e}")

• src/desk3_service/server.py:23-42 (helper)

  Helper function used by the handler to make authenticated HTTP requests to the Desk3 API.

  def request_api(method: str, url: str, params: dict = None, data: dict = None) -> any:
      headers = {
          'Accepts': 'application/json',
          'X-DESK3_PRO_API_KEY': API_KEY,
      }
      try:
          logging.info(f"Requesting {method.upper()} {url} params={params} data={data}")
          if method.lower() == 'get':
              response = requests.get(url, headers=headers, params=params)
          elif method.lower() == 'post':
              response = requests.post(url, headers=headers, json=data)
          else:
              raise ValueError(f"Unsupported HTTP method: {method}")
          response.raise_for_status()
          logging.info(f"Response {response.status_code} for {url}")
          return json.loads(response.text)
      except Exception as e:
          logging.error(f"Error during {method.upper()} {url}: {e}")
          raise