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Enterprise24 September 2025·3 min read

Localization: AuthKit in 90 Languages

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.

What is localization?

Consider what is localization?. 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.

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.

Selling to Enterprise requires localization

Selling to Enterprise requires localization 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.

  • 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

How it works

Consider how it works. 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.

Multilingual previews

Multilingual previews 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.

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.

Custom text

Custom text is where this gets concrete. 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.

Access user locale via API

That brings us to access user locale via api. 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.

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.

Reach international markets today

Consider reach international markets today. 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

The pattern repeats across every system we have looked at: the hard part is not the mechanism, it is keeping the mechanism honest as the surrounding assumptions change.

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.