Garmin Health MCP Server

Instructions

Implementation Reference

• src/index.ts:254-278 (handler)

  The handler function for the 'get_training_load' tool. Fetches the most recent training load data from the Supabase 'training_load' table, computes latest values and provides a history list.

  async function getTrainingLoad(days: number = 30) {
    const { data, error } = await supabase
      .from("training_load")
      .select("*")
      .order("calendar_date", { ascending: false })
      .limit(days);
  
    if (error) throw error;
  
    const latest = data?.[0];
    return {
      latest: {
        date: latest?.calendar_date,
        acute_load: latest?.acute_load,
        chronic_load: latest?.chronic_load,
        status: latest?.acwr_status,
      },
      history: data?.map((t) => ({
        date: t.calendar_date,
        acute: t.acute_load,
        chronic: t.chronic_load,
        status: t.acwr_status,
      })),
    };
  }

• src/index.ts:380-390 (registration)

  Tool registration in the ListTools handler, including name, description, and input schema definition.

  {
    name: "get_training_load",
    description:
      "Get training load data including acute/chronic workload ratio to assess overtraining risk",
    inputSchema: {
      type: "object",
      properties: {
        days: { type: "number", description: "Number of days (default: 30)" },
      },
    },
  },

• src/index.ts:423-425 (registration)

  Dispatch case in the CallToolRequestSchema handler that invokes the getTrainingLoad function.

  case "get_training_load":
    result = await getTrainingLoad(a.days || 30);
    break;