Celerlinks

Developer API

Build payments
into anything.

A clean REST API for SMS, vouchers, airtime, data, and bill payments. Integrate Celerlinks into your product in minutes.

Request API access Talk to sales
POST /v2/sms/bulk
curl -X POST https://api.celerlinks.com/v2/sms/bulk \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "sender_id": "MyBrand",
    "recipients": [
      "+2348012345678",
      "+2349087654321"
    ],
    "message": "Your order #1042 has been confirmed.",
    "schedule_at": null
  }'
200 OK
{
  "success": true,
  "message": "Messages queued successfully",
  "data": {
    "batch_id": "sms_01HX4Y9Z...",
    "total": 2,
    "queued": 2,
    "failed": 0,
    "cost": 2.00
  }
}

Built for developers

Everything you need to ship fast

Designed by developers, for developers. Clear docs, predictable behavior, no surprises.

Lightning-fast responses

Sub-100ms response times with 99.9% uptime SLA. Built for production workloads.

Secure by default

API key authentication, IP allowlisting, and webhook signature verification.

RESTful & predictable

Consistent JSON responses, standard HTTP status codes, and clear error messages.

Webhook events

Real-time event delivery for payments, voucher redemptions, and SMS status updates.

Usage analytics

Monitor your API usage, response times, and error rates from the dashboard.

SDK support

Official SDKs for Node.js, Python, and PHP. More languages coming soon.

Endpoints

Core API surface

Base URL: https://api.celerlinks.com

POST/v2/sms/bulkSend SMS to multiple recipients
POST/v2/vouchersCreate and issue vouchers
GET/v2/vouchers/{id}Retrieve a voucher by ID
POST/v2/airtime/purchasePurchase airtime for a number
POST/v2/data/purchasePurchase a data bundle
POST/v2/electricity/payPay an electricity bill
GET/v2/transactionsList transaction history
POST/v2/wallet/transferTransfer funds between wallets

Quick start

From zero to
first API call

Get your API key, make your first request, and go live — all in under 10 minutes.

1
Create a free Celerlinks business account
2
Navigate to Settings → Developer → API Keys
3
Generate a key and add it to your Authorization header
4
Make your first API call and go live
Request API access

Starter

For testing and small projects

Free

500 SMS/mo

Growth

For growing businesses

₦15,000/mo

10,000 SMS/mo

Enterprise

Volume pricing + dedicated support

Custom

Unlimited

Get building

Ready to integrate Celerlinks?

Start with the free tier and scale as you grow. No setup fees, no hidden costs.

Request API access Talk to sales