A Share MCP

Instructions

Implementation Reference

• src/tools/date_utils.py:53-59 (handler)

  The MCP tool handler for 'next_trading_day'. It is decorated with @app.tool() which registers it, and executes the core logic by delegating to the use case layer via run_tool_with_handling.
  @app.tool() def next_trading_day(date: str) -> str: """Get the next trading day after the given date.""" return run_tool_with_handling( lambda: uc_date.next_trading_day(active_data_source, date=date), context=f"next_trading_day:{date}", )
• src/use_cases/date_utils.py:73-79 (helper)

  Core implementation logic of next_trading_day. Fetches trading days from data source, filters future trading days after the input date, and returns the earliest one.
  def next_trading_day(data_source: FinancialDataSource, *, date: str) -> str: target = datetime.strptime(date, "%Y-%m-%d") end = (target + timedelta(days=31)).strftime("%Y-%m-%d") df = _fetch_trading_days(data_source, start_date=date, end_date=end) days = df[df["is_trading_day"] == "1"]["calendar_date"].tolist() next_day = min([d for d in days if d > date], default=None) return next_day or date
• mcp_server.py:56-56 (registration)

  Invocation of the register_date_utils_tools function, which defines and registers the next_trading_day tool (and other date utils) to the FastMCP app.
  register_date_utils_tools(app, active_data_source)