Causa Prima raises $20 million to enable AI agents to negotiate business-to-business invoices

The start-up, founded by three German entrepreneurs, aims to connect the AI agents of suppliers’ and customers’ services across different companies to resolve billing disputes and speed up payments.

Causa Prima, registered in Delaware and founded in 2026 by Maex Ament, Henrik Gebbing and Philip Stanislaus, announced on 13 October a 20 million dollar seeding tour, completed in September. Lead by Base10 Partners with QED Investors, FJ Labs and historical investors Creandum, Kfund and Borusan Ventures, it raises its total financing to $30 million after a pre-start of $10 million. The valuation was not communicated.

Automate the border between two companies

Its platform engages AI agents representing, on the one hand, the accounting suppliers of one company and, on the other, the accounting customers of its partner. These agents negotiate terms and conditions of payment, resolve differences on invoices and reduce payment times. Where most of the tools automate tasks within a single company, Causa Prima aims to switch between two companies.

The company has 25 employees divided between Madrid and Munich and will use the funds to open an office in New York and grow in the United States.