getWaterLogs
Retrieve daily water intake data from Fitbit to track hydration levels and monitor consumption patterns for health management.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| date | No | Date in YYYY-MM-DD format. If not specified, will use today. |
Implementation Reference
- src/server.ts:435-470 (handler)Handler function that fetches water intake logs from the Fitbit API for the specified date (defaults to today), formats the response as JSON text, or returns an error message.async ({ date }) => { try { const formattedDate = formatDate(date); const endpoint = `/user/-/foods/log/water/date/${formattedDate}.json`; const data = await makeApiRequest(endpoint); return { content: [ { type: "text", text: JSON.stringify( { date: formattedDate, water: data.water || [], summary: data.summary || {}, }, null, 2 ), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error: ${ error instanceof Error ? error.message : String(error) }`, }, ], isError: true, }; } }
- src/server.ts:429-434 (schema)Zod input schema defining an optional 'date' parameter for the tool.{ date: z .string() .optional() .describe("Date in YYYY-MM-DD format. If not specified, will use today."), },
- src/server.ts:427-471 (registration)Complete registration of the 'getWaterLogs' tool on the MCP server, including name, input schema, and inline handler function.server.tool( "getWaterLogs", { date: z .string() .optional() .describe("Date in YYYY-MM-DD format. If not specified, will use today."), }, async ({ date }) => { try { const formattedDate = formatDate(date); const endpoint = `/user/-/foods/log/water/date/${formattedDate}.json`; const data = await makeApiRequest(endpoint); return { content: [ { type: "text", text: JSON.stringify( { date: formattedDate, water: data.water || [], summary: data.summary || {}, }, null, 2 ), }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error: ${ error instanceof Error ? error.message : String(error) }`, }, ], isError: true, }; } } );
- src/server.ts:68-73 (helper)Helper function used by getWaterLogs to format the date parameter or default to today's date in YYYY-MM-DD format.function formatDate(date?: string): string { if (date) return date; const today = new Date(); return today.toISOString().split("T")[0]; // YYYY-MM-DD }
- src/server.ts:44-65 (helper)Shared helper function used by getWaterLogs to make authenticated HTTP requests to the Fitbit API.async function makeApiRequest(endpoint: string): Promise<any> { try { const url = `${baseUrl}${endpoint}`; const response = await fetch(url, { headers: { Authorization: `Bearer ${accessToken}`, Accept: "application/json", }, }); if (!response.ok) { throw new Error( `Fitbit API error: ${response.status} ${response.statusText}` ); } return await response.json(); } catch (error) { console.error(`Error making request to ${endpoint}:`, error); throw error; } }