Causa Prima raises $20M seed for agent-to-agent payment platform

The platform addresses the inefficiency of manual approval processes in accounts payable and receivable. According to a 2025 report by Ardent Partners, nearly half of executives in these roles cite slow invoice approvals as their primary challenge, with average processing times exceeding eight days. Causa Prima’s agents negotiate directly with counterpart agents to facilitate early payments, monetizing the service by taking a percentage of the transaction. The company currently has 25 employees in Madrid and Munich and plans to open a New York office to expand its presence in the United States.

The founders, who met nearly a decade ago while pitching earlier startups, identified the gap in current AI automation, which often stalls when waiting for human intervention across organizational boundaries. They aim to build a network where agents handle the handoff between companies, targeting a market that Fortune Business Insights estimates at roughly $98 trillion in annual B2B payments.