For a long time, I thought building APIs meant writing endpoints.

You know the pattern:

Define a route

Validate input

Query the database

Transform the result

Send a response

Do that over and over again.

Different routes. Same structure.

The Illusion of Control

Writing endpoints feels productive.

You’re in control of everything:

The logic

The validation

The data flow

But after a while, something becomes obvious:

You’re not building systems.

You’re repeating patterns.

The Real Problem

Most APIs look like this:

app . get ( ' /users/:id ' , async ( req , res ) => { const id = req . params . id ;

if ( ! id ) { return res . status ( 400 ). json ({ error : ' Missing id ' }); }

const user = await db . users . findById ( id );

if ( ! user ) { return res . status ( 404 ). json ({ error : ' Not found ' }); }

return res .…