Question 1

What does Currencyapi do?

Accepted Answer

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.

Question 2

How much does Currencyapi cost?

Accepted Answer

Currencyapi is free to start, with paid tiers for higher usage (freemium). Free: $0/month, 300 req/month, daily updates (personal use). Small: $9.99/month, 15,000 req/month, hourly updates. Medium: $39.99/month, 600,000 req/month, 60-sec updates + sandbox. Large: $79.99/month, 1.7M req/month, 30-sec updates + 5 keys + sandbox.

Question 3

How do I authenticate with the Currencyapi API?

Accepted Answer

API Key — passed as Bearer token or query parameter; instant signup, no credit card for free tier

Question 4

Is there a rate limit on Currencyapi?

Accepted Answer

Free: 300 req/month. Small: 15,000 req/month. Medium: 600,000 req/month. Large: 1.7M req/month.

Question 5

Does Currencyapi offer a sandbox or test mode?

Accepted Answer

Yes — Currencyapi provides a sandbox or test environment so you can integrate and test before going live.

Question 6

What is Currencyapi best suited for?

Accepted Answer

Developers, startups, and fintech apps needing real-time and historical currency data for 170+ currencies including NGN, with plans from free to high-volume and support for cryptocurrencies alongside fiat currencies.

Question 7

Is there anything else I should know before integrating Currencyapi?

Accepted Answer

Sandbox environment is only available on Medium ($39.99/month) and Large ($79.99/month) plans. The free tier (300 req/month) is suitable for prototyping only. Supports 170+ currencies AND major cryptocurrencies in a single API — rare among exchange rate providers.

Question 8

Where can I find Currencyapi's documentation?

Accepted Answer

The official API documentation is at https://currencyapi.com/docs. The provider's website is https://currencyapi.com.

Question 9

Does Currencyapi support Nigerian developers?

Accepted Answer

Yes — Currencyapi explicitly supports Nigerian developers/use cases.

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