JVLink MCP Server

Instructions

Implementation Reference

• src/jvlink_mcp_server/server.py:566-581 (handler)

  The MCP tool definition for "nar_favorite_performance". It wraps the database logic into an MCP-compatible tool handler.

  @mcp.tool(name="nar_favorite_performance")
  def analyze_nar_favorite_performance(
      ninki: int = 1,
      venue: Optional[str] = None,
      year_from: Optional[str] = None,
      distance: Optional[int] = None
  ) -> dict:
      """NAR地方競馬の人気別成績を分析
  
      大井、船橋、川崎、浦和、名古屋、園田など地方競馬場の人気別勝率を調べられます。
      """
      with DatabaseConnection() as db:
          return _get_nar_favorite_performance(
              db, venue=venue, ninki=ninki,
              year_from=year_from, distance=distance
          )

• src/jvlink_mcp_server/database/high_level_api.py:688-699 (helper)

  The database logic handler for NAR favorite performance, which delegates to a shared implementation function with 'nar' source identifier.

  def get_nar_favorite_performance(
      db_connection,
      venue: Optional[str] = None,
      ninki: int = 1,
      year_from: Optional[str] = None,
      distance: Optional[int] = None
  ) -> Dict[str, Any]:
      """NAR地方競馬の人気別成績を取得（JRA版に委譲）"""
      return _favorite_performance_impl(
          db_connection, venue=venue, ninki=ninki, year_from=year_from,
          distance=distance, source='nar'
      )