mcp-fitbit/build/weight.js

Model Context Protocol (MCP) server for accessing Fitbit health and fitness data. Connect AI assistants like Claude to your Fitbit data for personalized health insights.

import { registerTool, CommonSchemas, handleFitbitApiCall } from './utils.js';
// --- Tool Registration ---
/**
 * Registers a single, parameterized Fitbit weight tool with the MCP server.
 * @param server The McpServer instance.
 * @param getAccessTokenFn Function to retrieve the current access token.
 */
export function registerWeightTool(server, getAccessTokenFn) {
    registerTool(server, {
        name: 'get_weight',
        description: "Get the raw JSON response for weight entries from Fitbit for a specified period ending today. Requires a 'period' parameter such as '1d', '7d', '30d', '3m', '6m', '1y'",
        parametersSchema: {
            period: CommonSchemas.period,
        },
        handler: async ({ period }) => {
            const endpoint = `/body/weight/date/today/${period}.json`;
            return handleFitbitApiCall(endpoint, { period }, getAccessTokenFn, {
                successDataExtractor: (data) => data['body-weight'] || [],
                noDataMessage: `the period '${period}'`,
                errorContext: `period '${period}'`
            });
        }
    });
}