Startups & builders

Add payments
without the sting

You’re building a product. Payments should be an afternoon’s work and a rate you can predict — not a metered surprise that scales faster than your revenue. Sandbox keys the moment you sign up, one clean API, and every price published.

Get sandbox keys Read the docs
Built for builders

Predictable from your first transaction to your millionth

Build tonight

Test API keys at signup, no approval needed. A sandbox that behaves like production — including webhooks and settlement timing.

💵

Rates that don’t creep

Every price on the pricing page. Invoicing and billing included free — nothing metered on top as you grow.

🔗

Checkout in one line

An in-page checkout embed for your site, hosted flows when you’d rather not build, a full API when you would.

🔁

Recurring without a catalogue

Subscriptions, instalments and any schedule on cards or Direct Debit — no product-catalogue ceremony first.

🚀

A platform path when you’re ready

If your product onboards other businesses, become a platform: your customers take payments, you earn on every one.

🔒

No surprise freezes

Underwritten up front — so the week your volume takes off is a celebration, not a risk review.

No code → API

Start at your speed. Graduate when ready.

Every level uses the same account and the same rates — nothing to migrate when you level up.

NO CODE

Payment links & invoices

Get your MVP charging money today — share a link, send an invoice, print a QR. Zero build.

ONE LINE

Embedded checkout

Paste one script tag and your site sells — in-page, no redirect. See it live →

LOW CODE

Subscriptions & billing

Recurring plans, instalments and card on file with hosted flows — on cards or Direct Debit.

FULL API

Build it your way

One payment object across every rail, webhooks for everything, terminals when you go physical. Docs →

FAQ

Startup questions

Why do startups get stung on payment pricing?
Metered extras add up: percentage fees on invoicing, billing add-ons, higher blended rates and paid features that arrive exactly when volume does. Quadriel publishes every rate, includes invoicing and billing free, and the rate you sign at is the rate you scale at.
Can I build before I am approved?
Yes — signup issues sandbox API keys instantly, before underwriting. Build the whole integration against test data, then flip to live keys when approval completes.
What if my product will onboard other businesses?
Then you are a platform — your customers become fully-underwritten merchants under your agreement and you earn on every payment they take. Your full economics are disclosed transparently when you create your organisation.
Is there a fee to integrate or a monthly minimum?
No. No setup fee, no monthly minimum, no integration charge — you pay per successful transaction at published rates.
Get started

Sandbox keys in 60 seconds.
Build tonight.

Start now Read the docs