LEVEL 06 · LESSON 52
APIs
APIs are software contracts for exchanging data and requesting operations.
What it is
An application programming interface, or API, is a defined way for software systems to request information or operations from each other.
Why it matters
APIs let AI applications connect to real services without relying on a person to copy information between screens.
A business example
A customer assistant calls an order API with a verified order identifier and receives a shipping status. A separate operation is required to change the delivery address.
How it actually works
An API defines operations, input formats, authentication requirements, results, and errors. The calling application handles failures, rate limits, and version changes. For operations that change data, design retries carefully: a repeated request should not accidentally create a duplicate transaction. A model may propose an API-related action through tool calling, but application code is responsible for the actual request and authorization.
A common misconception
An API makes an operation accessible to software; it does not mean every connected AI is allowed to perform it.
ONE SENTENCE TO REMEMBER
APIs are software contracts for exchanging data and requesting operations.
CHECK YOUR UNDERSTANDING
Your CRM has an API for deleting customer records, and your assistant can call tools. Does that mean the assistant may delete records?
Show the answer
Answer: C.
APIs are software contracts for exchanging data and requesting operations. An API does not mean every connected AI is allowed to perform an operation; application code is responsible for the actual request and its authorization.
Take it into your next meeting
Which API operations should your assistant be allowed to read, change, or never call?
One more concept, understood.
Mark this lesson complete to keep your place.