Add login, billing, and paywalls
to your app in minutes.
Stop building auth and payments from scratch. Plug in our API, let your users sign up, pick a plan, and pay — so you can focus on your product.
Free to start · No credit card needed · Works with any language or framework
// Exchange the auth code for a token
const { access_token } = await fetch(
"https://astapa.com/api/token",
{ method: "POST", body: JSON.stringify({ code }) }
);
// Verify and check the user's plan
const user = verifyToken(access_token);
if (user.plan === "pro") {
/* unlock features */
}user.plan === "pro" — doneHow it works
From zero to production in three steps.
Create a project, add a few lines of code, and you're live. No servers to manage.
Create a project
Sign up, name your project, and grab your API keys. Takes about a minute.
Add login to your app
Send users to our login page. After they sign in, you get back a token with their info and plan.
Launch and grow
Set up plans, control who sees what, and watch your users grow from the dashboard.
Weeks of plumbing, or thirty minutes.
Every SaaS needs login, billing, and paywalls. You can spend weeks building them, or plug in ours and move on.
Build it yourself
Use Astapa
What you get
Everything your SaaS needs, ready to go.
Use one module or all three. They work great together, but each one stands on its own.
Pricing
Scales with your product.
Start free. Upgrade as you grow. No surprise bills, cancel anytime.
Free
100 MAUTest your idea for free. Login, sessions, and basic feature gating included.
- Hosted login page
- Google & GitHub login
- Secure tokens
- 1 project
Starter
1K MAUFor launched products with paying customers.
- Everything in Free
- Plan-based feature gating
- Webhooks
- 3 projects
Scale
10K MAUFor established SaaS with serious traffic.
- Everything in Starter
- Priority support
- Custom domain
- Unlimited projects
API reference
Standard OAuth 2.0. Works with anything.
Simple HTTP calls — no special library needed. Use any language, any framework. We also have helpers if you want them.
Ready to ship?
Create a free project and go live in under ten minutes.
Start building — freeFree to start · No credit card needed