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Enterprise21 August 2026·3 min read

How to add enterprise SSO to an Express.js API

Moving upmarket is usually described as a go-to-market decision.

Paycux engineering

Moving upmarket is usually described as a go-to-market decision. It arrives as an engineering one: a list of requirements attached to a contract, with a date.

This piece walks through how we think about it at Paycux, what we have changed our minds about, and where the sharp edges are.

Enterprise SSO in about 15 minutes

Consider enterprise sso in about 15 minutes. The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

Price the work honestly. A quarter spent building identity plumbing is a quarter not spent on the product the customer actually chose you for, and that trade should be made deliberately rather than by default.

Why enterprise SSO is different from social login

Why enterprise SSO is different from social login deserves its own treatment. The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

The cost is not the first integration; it is the long tail. Providers disagree in small ways, certificates expire, tenants move, and each one becomes something you own indefinitely.

  • Map each requirement to the failure it prevents
  • Count the long tail, not the first integration
  • Decide who owns the plumbing for the next three years
  • Make the buy-versus-build trade explicitly

What Paycux gives you out of the box

What Paycux gives you out of the box is where this gets concrete. Price the work honestly. A quarter spent building identity plumbing is a quarter not spent on the product the customer actually chose you for, and that trade should be made deliberately rather than by default.

The cost is not the first integration; it is the long tail. Providers disagree in small ways, certificates expire, tenants move, and each one becomes something you own indefinitely.

Before you start

That brings us to before you start. Price the work honestly. A quarter spent building identity plumbing is a quarter not spent on the product the customer actually chose you for, and that trade should be made deliberately rather than by default.

The cost is not the first integration; it is the long tail. Providers disagree in small ways, certificates expire, tenants move, and each one becomes something you own indefinitely.

The requirements look arbitrary until you map each one to a failure the buyer has already lived through.

Option A: Let the CLI do it (fastest)

Option A: Let the CLI do it (fastest) deserves its own treatment. The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

Option B: Write it yourself, step by step

Option B: Write it yourself, step by step is where this gets concrete. Price the work honestly. A quarter spent building identity plumbing is a quarter not spent on the product the customer actually chose you for, and that trade should be made deliberately rather than by default.

The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

Step 1: Install the Node SDK

Consider step 1: install the node sdk. The requirements look arbitrary until you map each one to a failure the buyer has already lived through. Single sign-on exists because someone left and kept access. Provisioning exists because a contractor's account outlived their contract.

The cost is not the first integration; it is the long tail. Providers disagree in small ways, certificates expire, tenants move, and each one becomes something you own indefinitely.

Where this leaves us

If there is one thing worth taking away, it is that the expensive decisions are the ones made implicitly. Making them on purpose costs an afternoon.

If you are working through the same problem and want to compare notes, the docs cover the mechanics and the console shows the behaviour on your own data.

Everything here, already built

Sign-in, enterprise SSO, directory provisioning, roles and an audit trail behind one API. Start with the quickstart and have a working sign-in this afternoon.

Start selling to enterprise customers

Create an account, point sign-in at Paycux, and get back to the part of the product that is actually yours.