Heeros invoice APIs for purchase and sales

Heeros purchase-invoice and sales-invoice processing can be automated through the JSON interfaces described on the Heeros financial-management integrations page. Sales invoices have a JSON REST API for importing invoices created in another system. Purchase invoices have APIs for importing and retrieving invoices, posting details, registers, images, and attachments. The purchase-invoice page says Heeros is now part of Finago and that this solution will soon be known as Finago Modular Purchase Invoices. Published list prices start at 219 euro per month excluding VAT. The same pages name Finvoice 3.0, TEAPPS 3.0, and PEPPOL as European transfer formats through OpenText, without stating which direction each format uses. They also name an ERP connector service and many ready-made accounting connections. They do not document authentication, a base URL, or a request schema, and they do not document an MCP server, SDK, CLI, or webhook contract. Zapier, Make, Power Automate, and n8n listings were not opened. Computer-use viability is unassessed. The API scores 4 because a documented import and retrieval path exists and the public developer detail needed to run it is missing. No other path can be scored from the pages opened.

Best path today: api · Overall automatability: 4/10