E*TRADE MCP Server

Instructions

Implementation Reference

• etrade_mcp/server.py:85-107 (handler)

  The handler function for the 'etrade_authenticate' tool. It is registered via the @mcp.tool() decorator. The function signature and docstring define the input schema (verifier: str). It completes the OAuth flow using the previously obtained request token and verifier, creates a MarketClient session, and returns a success message.

  @mcp.tool()
  def etrade_authenticate(verifier: str) -> str:
      """
      Complete E*TRADE OAuth authentication with verification code.
      
      Args:
          verifier: The verification code received after authorizing the application
          
      Returns:
          Success message
      """
      global _market_client, _request_token, _request_token_secret
      
      if not _request_token or not _request_token_secret:
          raise ValueError(
              "No request token found. Please call etrade_get_auth_url first."
          )
      
      auth = get_auth()
      session = auth.get_session(_request_token, _request_token_secret, verifier)
      _market_client = MarketClient(session, auth.base_url)
      
      return f"Successfully authenticated! Using {auth.environment} environment at {auth.base_url}"