Again, we want to enforce that your server adheres to the specification. Luckily, we have some fancy middleware that will make sure our requests and responses match the specification. Let’s use openapi-express-validator.

We can then use it as middleware to make sure that our responses are up-to-snuff.

app.use(
	OpenApiValidator.middleware({
		apiSpec: './openapi.json',
		validateRequests: true,
		validateResponses: true,
	}),
);