Integrations

Connect thelawin.dev with your existing tools to automate e-invoice generation. Every integration uses the same REST API — one POST request to /v1/generate, and you get a valid ZUGFeRD/XRechnung PDF back.

Automation Platforms

Platform	Use Case	Guide
n8n	Self-hosted workflow automation	n8n Guide
Zapier	No-code automation	Zapier Guide
Make.com	Visual workflow builder	Make Guide
AI Agents	Claude Code, MCP, LLM-driven invoicing	AI Agents Guide

E-Commerce

Platform	Use Case	Guide
Stripe	Payment webhook → automatic invoice	Stripe Guide
Shopify	Order → ZUGFeRD invoice	Shopify Guide
WooCommerce	Order → e-invoice PDF	WooCommerce Guide

Buchhaltung / Accounting

Software	Use Case	Guide
DATEV	ZUGFeRD-Rechnungen fuer DATEV-Import	DATEV Guide
lexoffice	Cloud-Buchhaltung + thelawin	lexoffice Guide
sevDesk	E-Rechnungen automatisieren	sevDesk Guide

Quick Start

Every integration follows the same pattern:

1. Trigger — An event fires (webhook, schedule, manual)
2. Build JSON — Construct the invoice payload
3. Call thelawin.dev — POST /v1/generate with your API key
4. Process result — Save PDF, send email, upload to storage

curl -X POST https://api.thelawin.dev/v1/generate \
  -H "Content-Type: application/json" \
  -H "X-API-Key: env_sandbox_demo" \
  -d '{"invoice":{"number":"001","date":"2026-01-15","seller":{"name":"Acme GmbH"},"buyer":{"name":"Customer AG"},"items":[{"description":"Service","quantity":1,"unit_price":100}]}}'

Demo Key

Use env_sandbox_demo to test any integration immediately — no account required. PDFs will have a SANDBOX watermark.

API Key

For production use, sign up and create an API key in the dashboard. See Authentication for details.