8 Best APIs for NGN support in Nigeria

XE Currency Data API delivers enterprise-grade foreign exchange rate data from XE, the world most trusted currency authority with over 300 million users globally. XE has been publishing currency data since 1993 and has built its reputation on the accuracy and reliability of its mid-market exchange rates. The XE Currency Data API extends this trusted rate data to developers and enterprises who need audit-grade FX information for financial systems, banking applications, ERP platforms, and compliance reporting. XE mid-market rates represent the midpoint between buy and sell prices in the global forex market, sourced from aggregated quotes across the global interbank market. These mid-market rates serve as the internationally recognized reference point for currency conversions in financial reporting, audit, and compliance contexts. Many Nigerian financial institutions, accounting firms, and corporate treasury teams use XE rates specifically because XE is recognized as a credible, independent source that satisfies auditor and regulator expectations for rate substantiation. The Nigerian Naira is fully supported across all XE Currency Data endpoints. Given the Naira's significant volatility in recent years and the importance of accurate NGN rates for Nigerian businesses with international operations, XE's multi-source rate aggregation methodology provides better rate accuracy than single-source alternatives. Nigerian importers, exporters, and companies with foreign currency debt obligations particularly benefit from rate data that accurately captures current market conditions. Real-time rate delivery ensures that XE Currency Data always reflects the current state of global forex markets. Rates are updated continuously throughout the trading day as market prices move. For Nigerian payment processors, money transfer operators, and foreign exchange bureaux integrating XE rates into customer-facing pricing, the currency rate freshness directly affects the quality of the rates presented to customers and the accuracy of the margins being applied. Historical rate data is available going back many years, enabling retrospective financial calculations and reporting. Nigerian companies preparing financial statements under IFRS, which requires foreign currency transactions to be recorded at transaction-date exchange rates, can use XE historical rates to retrieve the rate that applied on any specific past date. This historical accuracy is critical for audit compliance where the company must be able to substantiate the exchange rates used in financial reporting. The convert endpoint performs currency conversions using XE rates, accepting source currency, target currency, and amount. For applications where only the converted amount is needed rather than the underlying rate, this endpoint simplifies implementation. The API also supports retrieving rate information for a specific list of currency pairs rather than the full currency matrix, optimizing bandwidth for applications with defined currency requirements. XE Currency Data integrates with the full XE product ecosystem. Customers using XE for business money transfers can ensure their operational systems and their FX data layer are using consistent, source-consistent rates. For Nigerian companies that use XE for international payments alongside their own applications, this alignment eliminates discrepancies between system-calculated rates and actual transfer rates. The API is offered through paid subscription plans starting at accessible monthly rates for smaller usage volumes and scaling to enterprise contracts for high-volume financial applications. All plans include access to XE's trusted mid-market rates, historical data, and support from XE's team. Nigerian enterprises with specific data requirements or integration support needs can access dedicated account management through enterprise plans. The REST API uses API key authentication with JSON responses. Comprehensive documentation, SDKs for popular programming languages, and integration guides make implementation straightforward for Nigerian development teams building currency-aware financial applications across banking, fintech, trade finance, and ERP integration contexts.

ExchangeRate-API is one of the most developer-friendly and widely-used currency exchange rate APIs available globally. Founded to provide reliable, accurate, and affordable foreign exchange data, the platform delivers real-time and historical exchange rates for 165 currencies across 200 countries — including the Nigerian Naira (NGN) — through a clean, well-documented RESTful API. It is particularly popular among Nigerian developers building fintech apps, e-commerce platforms, and financial tools that require accurate NGN conversion rates against major world currencies. **What ExchangeRate-API Does** The API provides two primary services: real-time exchange rates and historical rate data. The standard endpoint returns the latest exchange rates for all 165 supported currencies relative to a chosen base currency. The pair conversion endpoint returns the conversion rate between any two specific currencies. The enriched data endpoint includes additional localization information such as currency symbols, decimal separators, and locale-specific formatting — useful for building polished financial UIs. **Nigeria Support** NGN (Nigerian Naira) is fully supported as both a base and target currency. Nigerian developers can fetch the current USD/NGN, EUR/NGN, GBP/NGN rates in a single API call, or query any cross rate between NGN and any of the other 164 supported currencies. This makes ExchangeRate-API suitable for any Nigerian application that displays, converts, or tracks exchange rates. **Historical Data** ExchangeRate-API provides access to historical exchange rate data going back to 1990 — available on all plans including the free tier. This is a rare feature among free exchange rate APIs and makes the platform valuable for building Naira devaluation charts, historical FX analysis tools, and financial reports requiring period-specific exchange rates. **Authentication** The API uses API key authentication. Keys are issued immediately upon free sign-up with just an email address — no credit card required. The key is appended to every request URL as a query parameter. For developers who want to test without even signing up, ExchangeRate-API also offers a no-key open access endpoint that returns exchange rates without authentication, though at a lower rate limit. **Pricing Plans** ExchangeRate-API offers three tiers: - **Free**: $0/month — 1,500 requests/month, daily rate updates, no credit card required - **Pro**: $10/month ($100/year) — 30,000 requests/month, hourly rate updates - **Business**: $30/month ($300/year) — 125,000 requests/month, rate updates every 5 minutes, priority support All plans include historical data, enriched data, high availability, and a long-term support (LTS) commitment — meaning the API will not break without advance notice of deprecation. **Rate Limits** Rate limits are enforced on a monthly basis. The quota consumed is tracked and the remaining allowance is provided in response headers. When the monthly quota is exhausted, the API returns HTTP 429 (Too Many Requests). After 20 minutes without requests, rate-limited open-access (no-key) IPs are automatically unblocked. **No Sandbox (Test with Free Tier)** ExchangeRate-API does not provide a dedicated sandbox environment. Testing is done using the free tier itself — since the free tier requires no credit card and provides 1,500 real API calls per month, this is typically sufficient for development and integration testing. **Use Cases for Nigerian Developers** ExchangeRate-API is appropriate for any Nigerian project that needs exchange rate data as a data source rather than as a core payment processing feature. It does not process transactions — it only provides rate data. Common Nigerian use cases include: displaying live NGN rates on remittance platforms, powering multi-currency invoice tools, building Naira rate trackers, and auto-converting product prices in NGN to USD/EUR for international storefronts. **Important Limitation for Nigeria** ExchangeRate-API provides mid-market exchange rates sourced from financial data providers. These rates are the "official" interbank rates, not the parallel market (black market) NGN rate that often differs significantly in Nigeria. For apps that need to track or display the Nigerian parallel market rate, Monierate is a more appropriate data source. ExchangeRate-API's NGN rates reflect the official CBN/interbank rate. **Challenges** The free tier's daily update frequency means the rate data can be up to 24 hours stale — not suitable for high-frequency trading or real-time FX conversion in production payment flows. For production fintech use where real-time accuracy matters, the Pro plan ($10/month) with hourly updates is the minimum recommended tier. **Frequently Asked Questions** Q: Do I need a credit card to start? A: No. The free plan requires only an email address. Q: Does ExchangeRate-API support NGN? A: Yes. NGN is one of 165 supported currencies. Q: How current are the rates on the free plan? A: Updated once per day. For hourly updates, upgrade to Pro ($10/month). Q: Does it provide black market / parallel market NGN rates? A: No. Only official mid-market rates. Use Monierate for Nigerian parallel market rates. Q: Can I use this for live payment processing in production? A: For rate display yes, but not for actual transaction processing — this is a data API, not a payment gateway.

CurrencyScoop is a foreign exchange data API that provides developers with real-time and historical exchange rate data for over 168 currencies worldwide, including the Nigerian Naira. Built for fintech developers, e-commerce platforms, and financial applications, CurrencyScoop delivers accurate, up-to-date rates through a simple RESTful API with clear documentation and reliable uptime. The API provides several core endpoints suited to different integration scenarios. The latest rates endpoint returns current exchange rates for all supported currencies relative to a specified base currency, updated throughout the trading day to reflect market movements. This endpoint is the foundation for currency conversion features in payment processors, e-commerce storefronts, and financial calculators. The convert endpoint accepts an amount and currency pair and returns the converted value directly, simplifying client-side implementation for applications that only need conversion functionality rather than rate tables. Historical rates represent one of CurrencyScoop's strongest features. Developers can query exchange rates for any past date going back years, enabling applications that need to calculate the Naira value of historical transactions, compare current rates against past periods, or build time-series visualizations of currency movements. Nigerian accounting and invoicing platforms can use historical rates to accurately record the Naira value of foreign currency transactions at the time they occurred. The time-series endpoint enables querying rates across a date range, returning a day-by-day series of exchange rates. This powers trend charts and analytics features showing how the Naira has moved against major trading currencies like the USD, EUR, GBP, and CNY over weeks, months, or years. For Nigerian financial analysts and import businesses tracking their currency exposure, these trend charts provide valuable context for hedging and procurement timing decisions. Nigerian Naira is fully supported across all CurrencyScoop endpoints, reflecting the service's coverage of all globally traded and many exotic currencies. For Nigerian payment companies, remittance platforms, and e-commerce businesses serving both local and international customers, having accurate NGN rates is non-negotiable. CurrencyScoop sources rates from financial data providers that cover African currencies, ensuring NGN rates reflect current market conditions rather than stale approximations. For e-commerce platforms serving Nigerian consumers who prefer to see prices in familiar Naira terms, CurrencyScoop enables real-time price conversion from USD or EUR product prices to NGN. Given the volatility of the Naira exchange rate in recent years, real-time rates are significantly more accurate than rates hardcoded into the application. This ensures customers always see accurate Naira prices that reflect actual conversion rates they would experience at checkout. Remittance and international money transfer platforms operating in Nigeria use currency APIs like CurrencyScoop to display indicative exchange rates and calculate how much Naira a recipient will receive for a given foreign currency amount. Transparency in exchange rate display is increasingly important for Nigerian remittance customers who compare services based on the rates and fees displayed before initiating a transfer. The API is available through a freemium model with a free plan offering enough requests for development and low-traffic applications. Paid plans scale with request volume to accommodate production applications handling thousands of conversions daily. All plans include access to the same data quality and endpoints; higher tiers simply remove request limits and unlock faster support response times. Integration is designed to be developer-friendly with straightforward authentication using an API key included in request headers or query parameters. The JSON response format is consistent across endpoints, and the documentation includes examples in multiple programming languages. Nigerian developers can typically integrate CurrencyScoop into an existing application in under an hour, making it one of the fastest paths to reliable FX data.

CurrencyLayer is one of the most widely-used and long-established exchange rate APIs in the world, providing real-time and historical foreign exchange data for 168 currencies and precious metals. Now owned and operated by APILayer — a platform aggregating developer APIs across multiple categories — CurrencyLayer benefits from enterprise-grade infrastructure, high availability, and a large developer community built up over years of operation. Nigerian Naira (NGN) is fully supported as both a source and target currency. **What CurrencyLayer Does** CurrencyLayer delivers exchange rate data sourced from banks and commercial data providers, providing accurate mid-market rates for 168 world currencies alongside precious metals including gold (XAU), silver (XAG), platinum (XPT), and palladium (XPD). The API supports real-time rate queries, historical rate lookups for any past date, and currency conversion calculations. All responses are delivered in JSON format via simple HTTPS GET requests. **Nigeria Support** NGN (Nigerian Naira) is one of 168 supported currencies. On paid plans (Basic and above), NGN can be used as the base currency — allowing Nigerian apps to fetch NGN-denominated rates for all other currencies in a single call. On the free plan, the base currency is locked to USD (developers can still get NGN rates but must calculate conversions from the USD base). **Authentication** API access requires an API key, which is appended to all request URLs as the access_key query parameter (e.g., ?access_key=YOUR_KEY). API keys are issued immediately upon free signup at currencylayer.com. The service uses HTTPS for all requests to protect key confidentiality. **Pricing Plans** CurrencyLayer offers five tiers: - **Free**: 100 API calls/month, USD base currency only, hourly update frequency - **Basic**: $13.99/month — 10,000 calls/month, all 168 base currencies, conversion endpoint - **Professional**: $52.99/month — 100,000 calls/month, 10-minute rate updates - **Professional Plus**: $84.99/month — 500,000 calls/month, 60-second rate updates - **Enterprise**: Custom pricing for very high volume requirements The critical limitation of the free plan is the USD-only base currency restriction. Nigerian developers who need NGN as a base currency (e.g., to display NGN/USD rather than USD/NGN) must upgrade to at least the Basic plan ($13.99/month). **Update Frequency** Like ExchangeRate-API and other tiered providers, CurrencyLayer's rate freshness scales with plan: - Free and Basic: Updated every 60 minutes - Professional: Updated every 10 minutes - Professional Plus: Updated every 60 seconds For production Nigerian fintech applications requiring near real-time accuracy, the Professional Plus plan's 60-second updates are appropriate. **Historical Data** Historical exchange rate data is available on paid plans, enabling developers to query the exact NGN exchange rate on any specific past date. This is critical for Nigerian businesses that need to record foreign-currency transactions at the exchange rate prevailing on the transaction date — a requirement under IFRS accounting standards used by many Nigerian companies. **Precious Metals** CurrencyLayer is one of the few exchange rate APIs that includes gold and silver prices in its currency list. Gold (XAU) and silver (XAG) prices are returned in the same API response as fiat currencies, making CurrencyLayer useful for Nigerian commodity investment platforms and jewellery businesses that need to track both precious metal values and NGN FX rates. **APILayer Ecosystem** As part of the APILayer product suite, CurrencyLayer users can manage their API key, view usage analytics, and access support through the APILayer dashboard. APILayer also offers complementary APIs (VAT rates, IP geolocation, etc.) that can be purchased and managed in the same account — convenient for developers building multi-feature financial applications. **Important Limitation for Nigeria** CurrencyLayer provides official mid-market exchange rates from banks and data providers. It does not provide Nigerian parallel market (black market) or Bureau de Change rates. In periods of significant Naira volatility or divergence between official and parallel rates, CurrencyLayer rates may not reflect what Nigerian consumers or informal businesses actually transact at. For parallel market tracking, use Monierate. **Comparison with ExchangeRate-API** CurrencyLayer is older and more widely deployed but has a more restrictive free tier (100 calls vs. 1,500 calls on ExchangeRate-API). The Basic plan at $13.99/month is more expensive than ExchangeRate-API Pro at $10/month for comparable features. CurrencyLayer's advantage is the inclusion of precious metals and the APILayer ecosystem. Choose CurrencyLayer if precious metals rates or APILayer ecosystem integration matter; choose ExchangeRate-API for a more generous free tier and lower entry-level paid pricing. **Frequently Asked Questions** Q: Can I use NGN as a base currency on the free plan? A: No. The free plan is locked to USD as the base currency. Upgrade to Basic ($13.99/month) for NGN base currency support. Q: Does CurrencyLayer include gold prices? A: Yes. Gold (XAU), silver (XAG), platinum (XPT), and palladium (XPD) are included in the 168-currency response. Q: How do I authenticate API requests? A: Append your API key as access_key=[YOUR_KEY] in the request URL query string. Q: Is there a sandbox for testing? A: No dedicated sandbox — testing uses the live API with free tier credentials. Q: Who owns CurrencyLayer? A: CurrencyLayer is owned by APILayer, a platform aggregating developer-focused APIs.

Currencyapi.com is a modern, developer-first currency conversion API that provides real-time and historical exchange rate data for over 170 fiat currencies and major cryptocurrencies. Built for developers who need accurate, fast, and reliable FX data with a clean developer experience, Currencyapi.com stands out for combining both traditional fiat currencies (including Nigerian Naira, NGN) and cryptocurrency rates in a single unified API endpoint — a rare feature that reduces the number of integrations needed for multi-asset financial applications. **What Currencyapi.com Does** The API delivers exchange rate data in two primary modes: real-time rates (updated as frequently as every 30 seconds on the highest tier) and historical rates (available on paid plans). All responses are in JSON format. The API is RESTful and authentication uses an API key, which can be passed as a Bearer token in the Authorization header or as a query parameter. A Postman collection and SDKs in multiple programming languages are available to accelerate integration. **Nigeria Support (NGN)** Nigerian Naira (NGN) is fully supported as both a base and target currency. Nigerian developers can fetch the current rate of NGN against any of the 170+ supported currencies, convert NGN amounts to USD or EUR, or pull historical NGN rates for accounting and reporting purposes. **Cryptocurrencies + Fiat in One Call** Unlike most exchange rate APIs that handle only fiat currencies, Currencyapi.com includes major cryptocurrency rates (Bitcoin, Ethereum, and other prominent tokens) alongside fiat currencies in the same API response. This makes it particularly useful for Nigerian crypto/fintech hybrid applications that need to display both NGN fiat values and crypto asset values without calling separate APIs. **Pricing Plans** - **Free**: $0/month — 300 requests/month, daily updates, 1 API key, personal use only - **Small**: $9.99/month — 15,000 requests/month, hourly updates, 1 API key, commercial use - **Medium**: $39.99/month — 600,000 requests/month, 60-second updates, 2 API keys, sandbox access - **Large**: $79.99/month — 1.7 million requests/month, 30-second updates, 5 API keys, sandbox access The free tier (300 req/month) is suitable for prototyping and small personal projects. Commercial applications should use at minimum the Small plan ($9.99/month). Production applications needing near real-time rates require the Medium or Large plan. **Sandbox Environment** A dedicated sandbox environment is available on the Medium ($39.99/month) and Large ($79.99/month) plans. This allows developers to test API integrations, simulate responses, and validate error-handling scenarios without consuming live API quota. The sandbox is not available on the Free or Small plans. **Rate Limits & Quotas** Rate limits are enforced per calendar month. Quotas are tracked in API response headers. Once the monthly quota is exhausted, additional requests return an error response until the quota resets at the start of the next month. **Update Frequency** Exchange rate freshness is tied to plan tier: - Free: Updated once per day - Small: Updated every hour - Medium: Updated every 60 seconds - Large: Updated every 30 seconds For production Nigerian fintech applications that need accurate live rates (e.g., payment conversions, live rate displays), the Medium plan's 60-second update cycle is typically sufficient. **Historical Data** Historical exchange rate data is available on paid plans — allowing developers to query the NGN exchange rate on any specific past date. This is essential for accounting applications, audit trail generation, and period-specific financial reporting. **Developer Experience** Currencyapi.com provides a Postman collection for immediate API exploration, SDKs in multiple languages to accelerate integration, and clear documentation at currencyapi.com/docs. The API follows standard REST conventions, making it straightforward to integrate into any backend stack. **Important Limitation** Like most global exchange rate APIs, Currencyapi.com provides official mid-market exchange rates, not Nigerian parallel market (black market) or Bureau de Change rates. For Nigerian parallel market rates, use a Nigeria-specific source like Monierate. The official rates may diverge significantly from street rates during periods of high Naira volatility. **Frequently Asked Questions** Q: Can I use Currencyapi.com for free in production? A: The free plan allows 300 requests/month for personal use only. For commercial production use, the Small plan ($9.99/month) with 15,000 requests is the minimum. Q: Does Currencyapi.com support NGN? A: Yes. NGN is one of 170+ supported currencies. Q: Does it include cryptocurrency prices? A: Yes. Major cryptocurrencies (BTC, ETH, and others) are included alongside fiat currencies in the same API endpoint. Q: Is there a sandbox for testing? A: Yes, but only on Medium ($39.99/month) and Large ($79.99/month) plans. Free and Small plan users test against the live API. Q: Does it provide Nigerian black market rates? A: No. Only official mid-market rates. Use Monierate for Nigerian parallel market data.

CurrencyFreaks is a foreign exchange rate API providing real-time and historical currency data for over 150 global currencies, with particular value for Nigerian developers and businesses needing reliable Naira exchange rate data. The service aggregates rates from multiple financial data sources to deliver accurate mid-market rates with consistent uptime, making it a dependable choice for fintech applications, payment systems, and currency-aware business software. The API delivers current exchange rates across all supported currency pairs, with rates refreshed regularly throughout the trading day to track market movements. For applications where currency rate freshness matters — such as payment processing, order pricing, or customer-facing currency displays — CurrencyFreaks provides the up-to-date data needed to reflect actual market conditions rather than stale approximations. The Nigerian Naira is among the supported currencies, ensuring NGN/USD, NGN/EUR, NGN/GBP, and other critical Naira pairs are available for Nigerian applications. Historical exchange rate data is available from 2000 onwards, giving developers access to over two decades of FX rate history. This extensive archive is valuable for multiple use cases: financial modeling that requires long-term currency trend analysis, accounting systems that need to reconstruct historical transaction values at the exchange rates prevailing at the time of each transaction, and research applications analyzing the relationship between currency movements and economic events in Nigeria and globally. The historical depth is particularly significant for Nigerian context. The Naira has experienced several major devaluation episodes since 2000, including the 2016 exchange rate liberalization, the 2023 unification of official and parallel market rates, and subsequent volatility. Applications built for Nigerian financial analysis, research, or compliance can access the complete historical rate record through CurrencyFreaks to accurately model and document the impact of these exchange rate changes on business performance or asset values. Currency conversion is directly supported through a dedicated convert endpoint. Rather than retrieving raw rates and performing conversion on the client side, applications can submit a source currency, target currency, and amount and receive back the converted value. This simplifies integration for applications where only conversion functionality is needed, such as product pricing widgets, invoice currency selectors, or quick calculator features. For Nigerian e-commerce platforms running multicurrency storefronts, CurrencyFreaks enables automatic price adjustment in multiple currencies based on live rates. When a Nigerian business displays prices in USD for international customers or in GBP for diaspora buyers, using live rates ensures the foreign currency price accurately reflects the current Naira equivalent, protecting the business from pricing errors due to rate movements. Remittance service providers and mobile money platforms operating in Nigeria rely on accurate FX data to calculate and display the Naira amount recipients will receive. Compliance and transparency requirements in the Nigerian financial services sector mean that displayed rates must be accurate and traceable. CurrencyFreaks provides the rate data foundation while applications handle the display and audit trail requirements. The API uses simple API key authentication included in request query parameters or headers. The JSON response format is clean and consistent, with currency codes following ISO 4217 standards for interoperability. The free plan provides 1,000 monthly requests — sufficient for development, testing, and low-traffic applications — while paid plans scale up request limits to accommodate production workloads. Nigerian developers benefit from a straightforward onboarding process requiring only email registration to obtain a working API key.