Causa Prima has raised $20 million in a seed round to expand software that lets AI agents negotiate payment terms between companies. The Delaware-based startup says its platform is designed to resolve billing disputes and speed up payment times between buyers and suppliers.
The round closed in September and was announced Tuesday. Base10 Partners led the financing, with participation from QED Investors, FJ Labs, and existing backers Creandum, Kfund, and Borusan Ventures. Causa Prima declined to disclose its valuation.
The company says the new money brings total funding to $30 million after a previous $10 million pre-seed round. It has 25 employees across offices in Madrid and Munich and plans to open a New York office as it expands into the United States.
Causa Prima was cofounded by German entrepreneurs Maex Ament, Henrik Gebbing, and Philip Stanislaus in 2026. Ament said the company is targeting a problem that remains stubbornly manual. 'The status quo today is that a lot of things are still somewhat manual,' he told Fortune. 'What we need is a network of agents, and… the area that felt natural to us was… accounts payable of one company and accounts receivable of another.'
Base10 general partner Rexhi Dollaku said in a written statement that 'every dollar going into [accounts payable and accounts receivable] automation today assumes the bottleneck sits inside one company. Causa Prima is building for the handoff between companies.'
The company monetizes by taking a cut whenever its agents successfully negotiate early payments between buyers and suppliers. It is entering a payments market that Fortune Business Insights values at roughly $98 trillion a year, while Mastercard estimates the broader opportunity at $125 trillion. A 2025 report by Ardent Partners found that nearly half of executives working in accounts payable say slow invoice approvals are their biggest challenge, and processing takes more than eight days on average.
Ament is a veteran of the payments and fintech world. He began as a software engineer at SAP SE and later worked at fintech companies focused on accounts payable and receivable before founding Taulia in 2009. In 2017, he founded Centrifuge, a decentralized finance company that tokenizes and trades real-world assets. Gebbing left McKinsey & Company in 2018 to cofound Finoa, a fintech company that helps bring businesses on-chain. Stanislaus previously led engineering under Ament at Centrifuge and later joined as chief technology officer.
The market has already voted on a simple truth: businesses want cash moving faster, not sitting in approval chains. Causa Prima is pitching AI as a tool for that job, and investors are backing the bet with fresh capital.
For free enterprise, the story is straightforward. The taxpayer is not the customer here; private firms are. If AI can reduce friction, shorten delays, and cut the cost of doing business, margins improve where it matters most: at the company level and in the broader market for capital.
