Introduction

Cedius is a business-management platform designed to help small businesses keep customers, invoices, payments, expenses, team access, and financial visibility in one place.

The Cedius API is designed for developers building external applications, internal tools, automations, reporting systems, or workflow integrations.

Portfolio note: Cedius is an illustrative API specification created to demonstrate developer-documentation skills. The example endpoints and credentials are not connected to a live production service.

What you can do

• Business — read and update workspace details.
• Customers — create and manage customer records.
• Invoices — create, retrieve, update, and manage invoices.
• Payments — record and inspect invoice payments.
• Expenses — track business spending.
• Team — inspect members and manage invitations or roles.
• Analytics — retrieve summary business metrics.

Base URL

https://api.cedius.app/v1

The /v1 path identifies the current major version.

Request format

Requests with a JSON body should send:

Content-Type: application/json

Authenticated requests use:

Authorization: Bearer YOUR_API_KEY

Response format

Single resources are returned inside data.

{
  "data": {
    "id": "cus_4d7c21",
    "name": "Adewale Johnson"
  }
}

Collections also include pagination metadata.

{
  "data": [],
  "meta": {
    "page": 1,
    "limit": 20,
    "total": 86,
    "total_pages": 5
  }
}

Resource IDs

Prefix	Resource
biz_	Business
cus_	Customer
inv_	Invoice
itm_	Invoice item
pay_	Payment
exp_	Expense
usr_	User
evt_	Webhook event
req_	Request

Timestamps

Timestamps use ISO 8601 in UTC.

2026-09-09T14:35:22Z

Currency values

For this portfolio specification, monetary values are represented as integers in the currency's normal whole unit.

{
  "amount": 150000,
  "currency": "NGN"
}

The example represents ₦150,000.

Next step

Continue to the Quickstart.