Documentation good enough that a developer integrates without talking to you.
The measure of an API is how long it takes a competent stranger to make their first successful call. We write the reference, the examples, the error catalogue, and the getting-started path that gets them there.
It also reduces your own support load, which is usually the argument that gets it funded.
We learn how this works for you today, from the people involved in it.
We agree what good looks like, who owns which step, and how success is measured.
We deliver the work in a narrow first slice you can see functioning.
We measure it, correct it, and widen it only once it holds.
Credentials are vaulted, access is scoped to what the job needs, and every call is attributable. Least privilege is the default rather than an upgrade.
Monitoring surfaces the failure quickly and the interface is documented, so the fix is a change rather than an archaeology project.
From the data flow and the owners first, so the estimate reflects what has to move and who decides, not how many endpoints there are.
Tell us what you are trying to accomplish. If aPI documentation and developer onboarding is not the right starting point, we will say so.