2 Best APIs for Bulk Download in Nigeria

Open Exchange Rates is one of the most widely deployed foreign exchange rate APIs in the world, used by thousands of applications ranging from e-commerce platforms and accounting software to fintech apps and content management systems. The service provides clean, reliable JSON exchange rate data for over 200 currencies, with rates updated hourly on the free tier and in real time on paid plans. Historical data going back to 2001 is available for all supported currencies, making it one of the deepest historical forex datasets accessible through a simple API. For Nigerian developers building currency-aware applications, Open Exchange Rates provides dependable NGN rate data alongside every other major world currency. Nigeria's currency situation makes exchange rate data critically important for application developers. The Nigerian Naira (NGN) has experienced significant depreciation against the US Dollar and other hard currencies over the past decade, driven by oil price volatility, foreign exchange policy changes, and structural economic factors. Nigerian applications that deal with foreign currencies — e-commerce platforms, accounting tools, remittance services, salary calculation apps for multinational employees, and investment platforms — all need accurate, regularly updated exchange rate data to function correctly. The /latest.json endpoint is the most commonly used endpoint, returning current exchange rates for all 200+ currencies from the specified base currency. On the free plan, only USD is available as the base currency — meaning all rates are expressed as units of currency per 1 USD. The USD/NGN rate is available on the free plan. For Nigerian applications that need NGN as the base currency (showing how much USD, EUR, or GBP costs in naira terms), the Starter plan ($12/month) enables any base currency. For most Nigerian applications, the USD-base approach with client-side inversion is functionally equivalent. Historical rates are available via /historical/{YYYY-MM-DD}.json, returning exchange rates as they were on any past date. This capability is essential for Nigerian accounting software and ERP systems that need to record foreign currency transactions at the exchange rate on the transaction date — a requirement under International Financial Reporting Standards (IFRS) and a common requirement in Nigerian corporate accounting practice. With rates available back to 2001, Nigerian finance teams can reconstruct historical exchange rate data for any period their records cover. The /convert endpoint performs currency conversion: specify an amount, a from-currency, and a to-currency, and receive the converted amount at the current rate. For Nigerian e-commerce platforms that display product prices in multiple currencies, this endpoint handles the arithmetic server-side without the developer needing to fetch rates and calculate manually. The /time-series endpoint returns exchange rate data over a date range, ideal for building trend charts and calculating average rates over periods. A Nigerian corporate treasurer tracking the average USD/NGN rate over each quarter, or a Nigerian researcher analyzing the correlation between naira depreciation and inflation, can use time-series data directly without downloading and processing historical files. Open Exchange Rates also provides OHLCV (open, high, low, close, volume) daily rate data for currency pairs — useful for Nigerian forex analytics tools that need to display candlestick charts or calculate volatility metrics for currency pairs. The free plan provides 1,000 API requests per month with hourly rate updates — sufficient for a low-traffic application or prototype. The Starter plan ($12/month) provides 10,000 requests per month, unlocks any base currency, and removes the USD-only restriction. The Production plan ($97/month) provides real-time rate updates and 100,000 requests per month, appropriate for high-traffic Nigerian fintech applications. All plans use a simple app_id API key parameter with no request signing, making integration extremely quick.

FoodData Central API is the official USDA (United States Department of Agriculture) food and nutrient database service, providing developer access to one of the world most comprehensive and authoritative collections of food composition data. Maintained by the USDA Agricultural Research Service, FoodData Central contains detailed nutrient profiles for over 400,000 food items spanning branded products, restaurant foods, foundation foods, survey foods, and experimental foods, making it the most complete publicly available food nutrition database. The database is organized into several distinct food datasets, each serving different research and application needs. Foundation Foods contains nutrient data for the most common foods in the American and global diet with detailed analytical methodology documentation. SR Legacy Foods is the classic USDA nutrient database maintained for continuity with long-running research studies. The Branded Food Products Database includes nutrition label data for commercially packaged foods from US manufacturers and retailers. FNDDS (Food and Nutrient Database for Dietary Studies) contains data for foods consumed in national nutrition surveys. Experimental Foods covers novel and research-purpose food items. Each food item in FoodData Central includes detailed nutrient values for macronutrients — protein, fat, carbohydrates, and fiber — as well as extensive micronutrient data covering vitamins A through K, B vitamins, all dietary minerals and trace elements, amino acid profiles, fatty acid breakdowns, and phytochemicals where measured. The depth of nutrient data makes FoodData Central the reference standard for clinical nutrition research and precise dietary analysis applications. The API supports multiple query types for flexible integration. Full-text search allows querying foods by name with filtering by food category, data type, and brand name. Barcode search enables food lookup by GTIN or UPC code for branded products. Direct food ID lookup retrieves complete nutrient profiles for known food items. Nutrient search enables finding all foods containing high levels of a specific nutrient, enabling use cases like identifying vitamin B12 rich foods for Nigerian consumers concerned about dietary deficiencies common in plant-heavy diets. For Nigerian health and wellness application developers, FoodData Central provides the comprehensive food composition data needed to build serious nutrition tracking features. While the database is US-centric for branded products, the foundation foods database covers staple foods found in Nigerian diets — cassava, yam, beans, plantain, rice, leafy vegetables, fish, chicken, beef, eggs, groundnuts, and palm oil are all represented. Nigerian food apps can combine FoodData Central data for these staple ingredients with locally sourced data for prepared Nigerian dishes to create comprehensive nutrition tracking for Nigerian users. Dietitians and nutritionists serving Nigerian clients use nutrition data APIs like FoodData Central to access authoritative nutrient values for clinical dietary assessments, meal plan creation, and patient education. The USDA imprimatur on the data provides the credibility that health professionals require when making nutritional recommendations. Restaurant and food service businesses in Nigeria can use FoodData Central to calculate approximate nutritional information for their menu items based on ingredient composition, enabling menu labeling and marketing to health-conscious consumers. As Nigerian consumer awareness of nutrition grows alongside rising rates of diet-related non-communicable diseases, nutritional transparency becomes an increasingly important differentiator for food businesses. The API is free to use with an API key obtained by registering with the USDA NutritionDB portal. The generous rate limit of 3,600 requests per hour accommodates high-traffic production applications without charge, making FoodData Central exceptional value as the foundation for any serious nutrition data application targeting Nigerian health-conscious consumers and healthcare professionals.