Lucanto API
Programmatic access to invoices, expenses, contacts, and your workspace data
The Lucanto API lets you integrate invoicing into your e-shop, accounting software, CRM, or custom automation. Everything you can do in the Lucanto app, you can do over a clean REST API — or hand 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 on every list endpoint.
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:
Every resource is scoped to a workspace via the workspace_id path segment,
e.g. GET /api/v1/workspaces/{workspace_id}/invoices.