---
title: Overview & Architecture
slug: devdocs
docTags: 
createdAt: 2026-10-16T12:03:50.624Z
---

Expressoft exposes one developer API, built on **GraphQL**. You use it for two kinds of integrations:

| Integration                                           | **What you use it for**                                                                             | **What it supports**            |
| ----------------------------------------------------- | --------------------------------------------------------------------------------------------------- | ------------------------------- |
| **[Delivery API](docId\:FLvY0y91jiU4mJgCcn--o)**      | Locations, products, prices, customers, addresses, companies, and orders for delivery integrations  | Queries, mutations and webhooks |
| **[CRM & Loyalty API](docId\:GRd4F83r0q71WP1tD9Krp)** | Customers, points balance, wallet, vouchers, promotions, the points of each receipt, and gift cards | Queries and mutations           |

Both use the same endpoint, the same schema, and the same token.

## What both have in common

- **One GraphQL endpoint.** Every request is a `POST`.
- **One authentication flow.** You get a Bearer token from a single token endpoint.
- **Cursor pagination.** Lists accept `first`, `after`, `last` and `before`, and return `totalCount`, `pageInfo` and `items`.
- **One result shape for mutations.** Every mutation returns `result`, `errorCode`, `errorMessage` and `errorData`.
- **Expressoft is the source of truth.** Don't recalculate or cache values that the API already gives you (loyalty balances, stock, prices). Query them when you need them.

## What differs

|                    | **Delivery API**                            | **CRM & Loyalty API**                   |
| ------------------ | ------------------------------------------- | --------------------------------------- |
| Push notifications | Yes, through webhooks                       | No. You query for changes.              |
| Main data          | Orders, locations, products, delivery areas | Customers, points, vouchers, gift cards |

## Where to start

1. Read [Getting Access](docId\:omwWQICbEQIUeF101PxuL) to get your credentials.
2. Read [Authentication Overview](docId\:J2FmZrijHggXl3Jouft5R) to generate a token.
3. Open the section for the integration you need and follow it from top to bottom: [Delivery API](docId\:FLvY0y91jiU4mJgCcn--o)  or [CRM & Loyalty API](docId\:GRd4F83r0q71WP1tD9Krp).