2 Best APIs for 200+ Countries in Nigeria

Mocean SMS API is a global communications platform providing SMS messaging, voice OTP, and number verification services through a developer-friendly REST API, with strong coverage across Asian and African mobile networks including all four major Nigerian operators — MTN, Airtel, Glo, and 9mobile. Founded in Malaysia and operating as part of the APAC telecommunications technology ecosystem, Mocean brings carrier-grade SMS infrastructure with direct connectivity to regional operators that gives it reliable delivery performance in markets including Nigeria, where indirect routing through global aggregators can reduce deliverability. The SMS sending endpoint accepts the sender ID, recipient MSISDN (international format phone number), and message text, returning a message ID and status response. Mocean supports both standard text SMS and binary SMS for encoding special content, and handles character counting and multi-part SMS assembly for messages exceeding the standard 160-character limit — automatically concatenating long messages into multiple parts while charging per part based on the message length. Nigerian apps sending detailed transaction receipts or lengthy notification texts benefit from automatic long message handling. Voice OTP delivery through Mocean's voice channel provides an alternative verification method when SMS OTP delivery is uncertain or unreliable. For Nigerian users with feature phones, poor SMS connectivity in rural areas, or DND restrictions, voice OTP calls the recipient's number and reads the OTP code aloud using text-to-speech. Mocean's voice OTP supports multiple languages. Nigerian fintech and healthcare apps can implement SMS OTP with automatic voice fallback — if SMS delivery is not confirmed within 30 seconds, trigger the voice call to the same number. Number verification through Mocean's verification API provides a managed OTP flow: request a verification for a number, receive the code by SMS or voice, then verify the code entered by the user. This abstracted flow handles code generation, delivery, expiry management, and verification — removing these concerns from the developer's application code. Nigerian apps requiring phone number verification for user registration can integrate Mocean's verification API to implement verified phone number onboarding in minutes. Two-way SMS through Mocean uses long numbers or short codes to receive inbound messages from Nigerian phone numbers, enabling SMS-based customer interactions. Nigerian businesses running SMS-based surveys ("Reply YES to confirm your appointment"), opt-in campaigns ("Text JOIN to receive promotions"), or customer support channels can use Mocean's inbound SMS capability to receive and process replies programmatically. Delivery reports from Mocean are returned via webhook callback to the developer's endpoint — when message status changes from sent to delivered or failed, Mocean sends a POST request with the updated status. Nigerian developers can implement reliable delivery confirmation workflows by registering a webhook endpoint that processes these callbacks and updates application state accordingly. Mocean API pricing is based on per-message rates that vary by destination country and message type, with a free trial credit for new accounts. Nigerian developers can test Mocean SMS delivery to Nigerian numbers using the trial credit before committing to a paid plan, verifying delivery quality before integration. The API uses Basic Auth with an API key and API secret, and returns JSON responses with clear status codes. Mocean's APAC-rooted infrastructure provides reliable routing to Nigerian mobile networks, and the platform's experience across Asian markets with diverse carrier environments translates to robust handling of the Nigerian carrier complexity that challenges some global SMS providers.

Abstract Holidays API is a clean, developer-friendly public holiday data API offered by AbstractAPI — a company known for building simple, well-documented API products for common developer tasks. The Abstract Holidays API provides national public holiday data for 200+ countries with straightforward API design: a single endpoint, simple API key authentication, and clean JSON responses that make integration quick and the data immediately usable. For Nigerian developers who want a polished, modern API experience for holiday data without the complexity of larger API platforms, Abstract Holidays is one of the most accessible entry points to global public holiday data. Country holiday data retrieval from the Abstract Holidays API is straightforward: pass the country code (NG for Nigeria), year, and API key, and receive a JSON array of public holidays for Nigeria in that year. Each holiday object includes the name, name in the local language, date in YYYY-MM-DD format, day of the week, type (national or observed), and a description where available. This clean, consistent response format is easy to parse and display in any Nigerian application regardless of the programming language or framework being used. Nigeria coverage in the Abstract Holidays API includes all federal public holidays, with moveable holidays like Easter and Islamic observances calculated for each requested year. Nigerian developers do not need to maintain a local database of holiday dates or write their own calendar calculation logic — querying the API with the year and country code returns the complete set of correctly dated Nigerian holidays for that year. Multiple country support in a single API account enables Nigerian businesses with international operations to retrieve holiday data for multiple countries using the same API key and endpoint, just changing the country code parameter. A Nigerian holding company with subsidiaries in Ghana, Kenya, and South Africa can build a multi-country holiday awareness system using Abstract Holidays without managing separate holiday data subscriptions for each market. Data freshness and accuracy from Abstract Holidays is maintained by the AbstractAPI team, who update holiday datasets when countries announce changes to their official public holiday schedules. Nigerian public holidays are occasionally modified by government proclamation (for example, a holiday may be moved to an adjacent Monday for a long weekend), and API-driven holiday data that is maintained by the provider requires fewer manual updates by Nigerian development teams than hardcoded holiday lists. The Abstract Holidays API is available on a freemium model — the free tier provides a limited number of API calls per month that is sufficient for small applications and development/testing. The free tier includes access to national holidays for all supported countries including Nigeria. Paid plans increase the monthly call limit for production applications with higher traffic, and pricing is affordable for individual Nigerian developers and small startups. Integration uses a single HTTP GET request with API key authentication via query parameter. The AbstractAPI documentation provides code examples in Python, Node.js, PHP, Ruby, and other languages. Nigerian developers can register for a free API key at abstractapi.com and make their first holiday API call within minutes, without setting up complex OAuth flows or SDK installations. AbstractAPI's consistent API design philosophy across its product suite means Nigerian developers familiar with other AbstractAPI products can onboard to Abstract Holidays with minimal learning curve. The same authentication pattern, response format conventions, and error handling approach used across all AbstractAPI products applies here, making multi-product AbstractAPI integrations efficient.