FlexRay · Open source · Developer tool

One integration. Every way to sign in.

FlexRay is a visual builder for Bitcoin-native authentication. Developers compose their sign-in flow, see it live, and copy production-ready code, no boilerplate.

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FlexRay, One integration. Every way to sign in.

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Client: FlexRay
Engagement: 2025
Our role: Design & build
Timeline: Open source

Live preview

build & see instantly

OAuth 2.1

PKCE, passkeys, wallets

Copy-paste

generated better-auth code

Product designDeveloper experienceFull-stack developmentNext.jsbetter-authTypeScript

What it is

A builder where developers toggle and reorder sign-in methods, Sigma Identity (BSV signature + BAP), BSV wallets, social OAuth, email and magic-link, and WebAuthn passkeys, preview the result live, then copy the generated better-auth code. It ships OAuth 2.1 with PKCE, device authorization, token-gating, and smart sessions.

Our role

We designed and built the configurator and its developer experience: a live-preview builder that turns a fiddly integration into a few clicks for any team adding wallet or identity login to a BSV app.

Next project

Primate.cash, A privacy-first web wallet for everyday crypto

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