# Build: Wallets & Payments API

Aurea has two products for developers, each with its own documentation and its own keys. This site documents **Build**: the API that runs your users' sign-in, wallets, sends, swaps, ramps and cards under your brand.

## Overview

- **Build** — this site, `docs.aureahub.com`. You are a tenant: your server and your apps call `https://api.aureahub.com/v1` for your own users ([Overview](https://docs.aureahub.com/docs/introduction.md)).
- **Pay** — [`pay.aureahub.com/docs`](https://pay.aureahub.com/docs). You are a merchant: you take payments with payment links and a hosted checkout, and receive them in your wallet ([Pay: Payment Links & Checkout](https://docs.aureahub.com/docs/products-pay.md)).

## Two Portals

Pick the portal by what you are building. Both can be used by the same company, with separate accounts and keys.

- Your own app with wallets for your users, sends and swaps, bank or card ramps: **Build**, here.
- Accepting a payment on your website or in a shop, with a link or a checkout page: **Pay**, on [pay.aureahub.com/docs](https://pay.aureahub.com/docs).

## Keys Compared

|  | Build (this site) | Pay |
| --- | --- | --- |
| Keys | One API key `ak_live_…` and one secret `as_…` per tenant, or server credentials | A secret key per environment: `sk_test_…` and `sk_live_…` |
| Test vs live | Chosen per request with `isTestnet`; the same key for both ([Test and Live](https://docs.aureahub.com/docs/guide-environments.md)) | Chosen by the key: an `sk_test_` key makes test sessions that move no money |
| How a call is signed | HMAC headers or a server token from your server; your users' access tokens from your apps ([Authentication](https://docs.aureahub.com/docs/authentication.md)) | The secret key, from your server only |
| Where you get them | From Aurea when your tenant is created; your administrators read and rotate them ([Credentials](https://docs.aureahub.com/docs/guide-credentials.md)) | In the Pay dashboard, Settings › Developers |

A key of one product never works on the other.

## Where to Start

1. [Quickstart](https://docs.aureahub.com/docs/quickstart.md) — from your API key to a first transaction on a test network.
2. No tenant yet: [request sandbox access](https://access.aureahub.com/login?request=build&source=sandbox) — we reply within one business day.
3. Questions: [help@aureahub.com](mailto:help@aureahub.com).

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