# Pay: Payment Links & Checkout

Aurea Pay takes payments for merchants — payment links, a hosted checkout and refunds — and has its own documentation at [pay.aureahub.com/docs](https://pay.aureahub.com/docs).

## Overview

- Pay is for a **merchant** taking a payment from a buyer: your server creates a checkout session, the buyer pays on Aurea's hosted page, and a signed webhook tells your server.
- Build — this site — is for a **tenant** running wallets and payments for its own users ([Build: Wallets & Payments API](https://docs.aureahub.com/docs/products-build.md)).

## Keys

- Pay's keys are made in the Pay dashboard (Settings › Developers › API Keys), one kind per environment: `sk_test_…` for development — test sessions, no money moves — and `sk_live_…` for production.
- They are not this site's keys: Build has one API key and secret per tenant for both environments, and chooses the environment per request with `isTestnet` ([Environments › Test and Live](https://docs.aureahub.com/docs/guide-environments.md)).
- Keep every secret key on your server only, whichever product it belongs to.

## Open the Pay Docs

[Open the Pay docs](https://pay.aureahub.com/docs)

Questions about either product: [help@aureahub.com](mailto:help@aureahub.com) — we reply within one business day.

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Web version: https://docs.aureahub.com/#products-pay