When Your Systems Don't Talk: APIs Explained Over a Cup of Tea
It is ten o'clock, chai time, and Nyambura, who runs an online homeware shop, corners her cousin Omondi in the office kitchen. Omondi works in software. Nyambura has a problem: her website, her accounting system and her M-Pesa payments all live in separate worlds, and her staff spend hours every day copying information between them. Somebody told her the answer is "APIs" and maybe API integration services in Nairobi from a local software company. She has no idea what that means. Omondi pours two cups and begins.
So what is an API?
"Think about a restaurant," Omondi says. "You sit at the table. The kitchen has the food. But you do not walk into the kitchen and start cooking. You tell the waiter what you want, the waiter takes the order to the kitchen, and brings back your food."
"The waiter is the API," he continues. "An API is a set of agreed rules that lets one system ask another system for something, or tell it something, without anyone walking into the kitchen."
API stands for Application Programming Interface, but the name matters less than the idea. It is a structured way for software to talk to other software, automatically.
What that looks like in a real business
Nyambura frowns. "Fine, but what would it actually do for me?"
Omondi lists a few examples on a napkin:
When a customer pays by M-Pesa, the payment system tells the website, and the order is marked paid instantly.
When an order is paid, the accounting system creates the sale record automatically, with no retyping.
When stock drops, the warehouse system alerts the website so you stop selling items you do not have.
When an invoice is created, it goes to the customer and to the tax system without anyone copying it.
Every evening, a summary of the day\'s sales lands in your inbox.
"Every one of those," he says, "is something your staff are currently doing by hand."
Why systems refuse to talk
Nyambura asks the obvious question. "If APIs are so useful, why do my systems not talk already?"
There are a few common reasons:
Older software has no API. Some systems were never built to share data.
Nobody has connected them. Two systems can both have APIs, but someone still has to build the bridge between them.
Different languages. One system calls it a customer, another calls it a client, a third calls it an account. Integration means translating between them.
Security worries. Rightly so. Connections must be secured properly, especially where payments and personal data are involved.
Getting API integration services in Nairobi right
Omondi gets serious for a moment. Integration is powerful, he explains, but it needs care. A good integration handles failures gracefully: if the internet drops or another system is down, it retries and alerts someone instead of quietly losing an order. It keeps logs, so you can see exactly what was sent and when. And it uses proper authentication, so only the right systems can talk to each other.
He also warns against building everything at once. Start with the connection that saves the most time, usually payments, because money is where errors hurt most. Platforms like PesaVista exist precisely so businesses can collect payments, make payouts and send invoices through one API, rather than juggling several.
The tea is finished
Nyambura puts down her cup. "So I do not need new systems. I need my current systems to talk."
"Often, yes," says Omondi. "Sometimes an old system needs replacing, but many times the quickest win is just connecting what you already have."
If your systems are refusing to speak to each other, talk to Philsoft about connecting them, or see the integration and development work on our services page. Bring your own chai. We will bring the napkins.