JVLink MCP Server

Instructions

Implementation Reference

• src/jvlink_mcp_server/database/high_level_api.py:715-723 (handler)

  Implementation of nar_horse_history via delegation to _horse_history_impl with source='nar'.

  def get_nar_horse_history(
      db_connection,
      horse_name: str,
      year_from: Optional[str] = None
  ) -> pd.DataFrame:
      """NAR地方競馬の馬の戦績を取得（JRA版に委譲）"""
      return _horse_history_impl(
          db_connection, horse_name=horse_name, year_from=year_from, source='nar'
      )

• src/jvlink_mcp_server/server.py:600-616 (handler)

  MCP tool registration for 'nar_horse_history' which calls _get_nar_horse_history.

  @mcp.tool(name="nar_horse_history")
  def get_nar_horse_race_history(
      horse_name: str,
      year_from: Optional[str] = None
  ) -> dict:
      """NAR地方競馬の馬の過去レース戦績を取得
  
      地方競馬で出走した馬の戦績を一覧できます。
      """
      with DatabaseConnection() as db:
          df = _get_nar_horse_history(db, horse_name=horse_name, year_from=year_from)
          return {
              "horse_name": horse_name,
              "total_races": len(df),
              "data": df.to_dict(orient="records"),
              "columns": df.columns.tolist()
          }