Lucanto API | Lucanto | Documentation

The Lucanto API lets you integrate invoicing, contacts, banking data, and workspace workflows into your e-shop, accounting software, CRM, or custom automation. The same scoped access can be handed to an AI agent over MCP.

Quickstart

Create an API key and make your first call in under five minutes.

Authentication

Personal access tokens vs. workspace tokens, and how scopes work.

Pagination

Cursor-based pagination for large collections.

Idempotency

Safe retries on POST with the Idempotency-Key header.

Errors

The canonical error envelope and how to handle it.

MCP server

Connect Claude, Cursor, or ChatGPT to your Lucanto workspace.

Base URL

All endpoints are served from:

https://app.lucanto.eu/api/v1

Most business resources are scoped to a workspace via the workspace_id path segment, e.g. GET /api/v1/workspaces/{workspace_id}/invoices. User profile, workspace discovery, registry lookup, and device registration are auth-scoped and therefore do not carry a workspace ID.