mcp-appstore

Implementation Reference

• server.js:1165-1377 (handler)

  The core handler function for the 'get_developer_info' tool. Fetches developer apps using platform-specific scrapers (gplay.developer for Android, appStore.developer for iOS), resolves developer IDs, aggregates portfolio metrics (installs, ratings), and optionally includes detailed app information.
  async ({ developerId, platform, country, lang, includeApps }) => { try { let developerInfo = { developerId, platform, name: "", website: null, email: null, address: null, privacyPolicy: null, supportContact: null, totalApps: 0, metrics: { totalInstalls: 0, averageRating: 0, totalRatings: 0 }, apps: [] }; if (platform === "android") { // Get developer's apps from Google Play Store const apps = await memoizedGplay.developer({ devId: developerId, country, lang, num: 100 // Get up to 100 apps }); if (apps && apps.length > 0) { // Get full details of the first app to extract developer info const firstApp = await memoizedGplay.app({ appId: apps[0].appId, country, lang }); // Set developer details developerInfo = { ...developerInfo, name: firstApp.developer || developerId, website: firstApp.developerWebsite || null, email: firstApp.developerEmail || null, address: firstApp.developerAddress || null, privacyPolicy: firstApp.privacyPolicy || null, totalApps: apps.length, metrics: { totalInstalls: 0, averageRating: 0, totalRatings: 0 } }; // Calculate metrics across all apps let totalRating = 0; let totalRatings = 0; let totalInstalls = 0; if (includeApps) { // Get full details for all apps const appDetailsPromises = apps.map(app => memoizedGplay.app({ appId: app.appId, country, lang }).catch(err => null) ); const appDetails = await Promise.all(appDetailsPromises); const validAppDetails = appDetails.filter(app => app !== null); validAppDetails.forEach(app => { if (app.score) totalRating += app.score; if (app.ratings) totalRatings += app.ratings; if (app.minInstalls) totalInstalls += app.minInstalls; }); developerInfo.metrics = { totalInstalls, averageRating: totalRating / validAppDetails.length, totalRatings }; // Add normalized app information developerInfo.apps = validAppDetails.map(app => ({ appId: app.appId, title: app.title, icon: app.icon, score: app.score, ratings: app.ratings, installs: app.minInstalls, price: app.price, free: app.free, category: app.genre, url: app.url })); } } } else { // For iOS, first get the numeric developer ID if not provided const isNumericId = /^\d+$/.test(developerId); let numericDevId = developerId; if (!isNumericId) { // Search for an app by this developer to get their numeric ID const searchResults = await memoizedAppStore.search({ term: developerId, num: 1, country }); if (searchResults && searchResults.length > 0) { const firstApp = await memoizedAppStore.app({ appId: searchResults[0].appId, country }); numericDevId = firstApp.developerId; } } // Get developer's apps from App Store const apps = await memoizedAppStore.developer({ devId: numericDevId, country, lang }); if (apps && apps.length > 0) { // Get full details of the first app to extract developer info const firstApp = await memoizedAppStore.app({ id: apps[0].id, country, lang }); // Set developer details developerInfo = { ...developerInfo, name: firstApp.developer || developerId, website: firstApp.developerWebsite || null, totalApps: apps.length, metrics: { totalInstalls: null, // App Store doesn't provide install numbers averageRating: 0, totalRatings: 0 } }; if (includeApps) { // Get full details for all apps const appDetailsPromises = apps.map(app => memoizedAppStore.app({ id: app.id, country, lang, ratings: true }).catch(err => null) ); const appDetails = await Promise.all(appDetailsPromises); const validAppDetails = appDetails.filter(app => app !== null); // Calculate metrics let totalRating = 0; let totalRatings = 0; validAppDetails.forEach(app => { if (app.score) totalRating += app.score; if (app.ratings) totalRatings += app.ratings; }); developerInfo.metrics = { totalInstalls: null, // Not available in App Store averageRating: totalRating / validAppDetails.length, totalRatings }; // Add normalized app information developerInfo.apps = validAppDetails.map(app => ({ appId: app.appId, title: app.title, icon: app.icon, score: app.score, ratings: app.ratings, price: app.price, free: app.free, category: app.primaryGenre, url: app.url })); } } } return { content: [{ type: "text", text: JSON.stringify(developerInfo, null, 2) }] }; } catch (error) { return { content: [{ type: "text", text: JSON.stringify({ error: error.message, developerId, platform }, null, 2) }], isError: true }; } }
• server.js:1159-1164 (schema)

  Input validation schema using Zod for the get_developer_info tool parameters.
  developerId: z.string().describe("The developer identifier. For Android: the name (e.g., 'Google LLC') or ID ('570031...'). For iOS: the numeric artist ID (e.g., '284882218') or the developer name ('Facebook'). If a name is provided for iOS, the tool will attempt to find the numeric ID."), platform: z.enum(["ios", "android"]).describe("The platform associated with the developer ('ios' or 'android')."), country: z.string().length(2).optional().default("us").describe("Two-letter country code for store localization. Default 'us'."), lang: z.string().optional().default("en").describe("Language code for results. Default 'en'."), includeApps: z.boolean().optional().default(true).describe("Whether to fetch and include details of the developer's apps in the response (up to 100 for Android, potentially more for iOS). Setting to false returns only developer metadata.") },
• server.js:1156-1378 (registration)

  Registration of the 'get_developer_info' tool on the MCP server using server.tool(), including inline schema and handler.
  server.tool( "get_developer_info", { developerId: z.string().describe("The developer identifier. For Android: the name (e.g., 'Google LLC') or ID ('570031...'). For iOS: the numeric artist ID (e.g., '284882218') or the developer name ('Facebook'). If a name is provided for iOS, the tool will attempt to find the numeric ID."), platform: z.enum(["ios", "android"]).describe("The platform associated with the developer ('ios' or 'android')."), country: z.string().length(2).optional().default("us").describe("Two-letter country code for store localization. Default 'us'."), lang: z.string().optional().default("en").describe("Language code for results. Default 'en'."), includeApps: z.boolean().optional().default(true).describe("Whether to fetch and include details of the developer's apps in the response (up to 100 for Android, potentially more for iOS). Setting to false returns only developer metadata.") }, async ({ developerId, platform, country, lang, includeApps }) => { try { let developerInfo = { developerId, platform, name: "", website: null, email: null, address: null, privacyPolicy: null, supportContact: null, totalApps: 0, metrics: { totalInstalls: 0, averageRating: 0, totalRatings: 0 }, apps: [] }; if (platform === "android") { // Get developer's apps from Google Play Store const apps = await memoizedGplay.developer({ devId: developerId, country, lang, num: 100 // Get up to 100 apps }); if (apps && apps.length > 0) { // Get full details of the first app to extract developer info const firstApp = await memoizedGplay.app({ appId: apps[0].appId, country, lang }); // Set developer details developerInfo = { ...developerInfo, name: firstApp.developer || developerId, website: firstApp.developerWebsite || null, email: firstApp.developerEmail || null, address: firstApp.developerAddress || null, privacyPolicy: firstApp.privacyPolicy || null, totalApps: apps.length, metrics: { totalInstalls: 0, averageRating: 0, totalRatings: 0 } }; // Calculate metrics across all apps let totalRating = 0; let totalRatings = 0; let totalInstalls = 0; if (includeApps) { // Get full details for all apps const appDetailsPromises = apps.map(app => memoizedGplay.app({ appId: app.appId, country, lang }).catch(err => null) ); const appDetails = await Promise.all(appDetailsPromises); const validAppDetails = appDetails.filter(app => app !== null); validAppDetails.forEach(app => { if (app.score) totalRating += app.score; if (app.ratings) totalRatings += app.ratings; if (app.minInstalls) totalInstalls += app.minInstalls; }); developerInfo.metrics = { totalInstalls, averageRating: totalRating / validAppDetails.length, totalRatings }; // Add normalized app information developerInfo.apps = validAppDetails.map(app => ({ appId: app.appId, title: app.title, icon: app.icon, score: app.score, ratings: app.ratings, installs: app.minInstalls, price: app.price, free: app.free, category: app.genre, url: app.url })); } } } else { // For iOS, first get the numeric developer ID if not provided const isNumericId = /^\d+$/.test(developerId); let numericDevId = developerId; if (!isNumericId) { // Search for an app by this developer to get their numeric ID const searchResults = await memoizedAppStore.search({ term: developerId, num: 1, country }); if (searchResults && searchResults.length > 0) { const firstApp = await memoizedAppStore.app({ appId: searchResults[0].appId, country }); numericDevId = firstApp.developerId; } } // Get developer's apps from App Store const apps = await memoizedAppStore.developer({ devId: numericDevId, country, lang }); if (apps && apps.length > 0) { // Get full details of the first app to extract developer info const firstApp = await memoizedAppStore.app({ id: apps[0].id, country, lang }); // Set developer details developerInfo = { ...developerInfo, name: firstApp.developer || developerId, website: firstApp.developerWebsite || null, totalApps: apps.length, metrics: { totalInstalls: null, // App Store doesn't provide install numbers averageRating: 0, totalRatings: 0 } }; if (includeApps) { // Get full details for all apps const appDetailsPromises = apps.map(app => memoizedAppStore.app({ id: app.id, country, lang, ratings: true }).catch(err => null) ); const appDetails = await Promise.all(appDetailsPromises); const validAppDetails = appDetails.filter(app => app !== null); // Calculate metrics let totalRating = 0; let totalRatings = 0; validAppDetails.forEach(app => { if (app.score) totalRating += app.score; if (app.ratings) totalRatings += app.ratings; }); developerInfo.metrics = { totalInstalls: null, // Not available in App Store averageRating: totalRating / validAppDetails.length, totalRatings }; // Add normalized app information developerInfo.apps = validAppDetails.map(app => ({ appId: app.appId, title: app.title, icon: app.icon, score: app.score, ratings: app.ratings, price: app.price, free: app.free, category: app.primaryGenre, url: app.url })); } } } return { content: [{ type: "text", text: JSON.stringify(developerInfo, null, 2) }] }; } catch (error) { return { content: [{ type: "text", text: JSON.stringify({ error: error.message, developerId, platform }, null, 2) }], isError: true }; } } );