Developer API

A crypto payments API you'll actually enjoy.

One clean REST API to create payments, spin up checkouts and receive webhooks. Predictable responses, clear docs, and copy-paste snippets that get out of your way.

Read the docs
REST + webhooks
Webhook simulator
Ship in a day
curl -X POST https://noteller.com/api/user/createPayment \  -H "x-api-key: $NOTELLER_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "amount": 50,    "redirect_uri": "https://yoursite.com/thanks"  }'# The response includes checkout_url —# send your customer there.# Confirm fulfilment with the payment.succeeded webhook.

Test end-to-end with a real $1–2 Litecoin payment — fees are a fraction of a cent.

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Payments settled this month

On-chain, straight to merchant wallets

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Countries served

Checkout in 6 languages

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Uptime, last 90 days

Automated checks around the clock

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Median time to settle

On fast networks

Built for builders

Everything you need to integrate

A focused API surface, sensible defaults and the tooling to go from idea to live payment fast.

Clean REST API

Predictable endpoints and JSON responses for payments, checkouts and payouts.

Reliable webhooks

Signed, retried events so your backend always knows what happened.

Real-chain testing

One live key. Test end-to-end with a $1–2 Litecoin payment, then fire simulated underpaid, expired or failed webhooks at your endpoint.

Clear docs

Copy-paste examples, a full reference, and auth you can grok in minutes.

Snippets & embeds

Ready-to-run examples, a drop-in Buy Button and Elements for React.

Scoped keys

Publishable and secret keys with the right access, rotatable anytime.

Start building in minutes.

Grab your live key, test with a small Litecoin payment, and start accepting crypto — free to start.

Free to start
First payment fee-free
Non-custodial
No monthly fees