Post by Tanvi Narain

Consumer account authentication is largely a solved problem. B2B payment authentication is not, and the opportunity there is enormous. What got us excited about GrailPay is the 360-degree view they take of the payment process. GrailPay checks how much to trust a bank account before it ever transacts, watches every payment in real time as it happens, and then stands behind the result with a guarantee. Entity, context, and a backstop, the three things bank payments need now that instant rails have stripped away the old safety nets. As payments migrate to RTP and FedNow, the old buffers, settlement delay, the window to claw a payment back disappear. When ACH now moves within seconds vs. days, the risk call becomes even more critical. Getting that real-time check right is the whole game. Couple that with AI agent payments becoming a near-term reality, where the risk models are still in their infancy. As an early entrant, GrailPay steps in to make a real-time risk call before the payment is ever processed. Beyond the business and the massive opportunity in agentic payments, what convinced us was Will Messina. Will takes a methodical, first-principles approach. He built an ACH processing business first, which was foundational for their risk intelligence layer. It's the kind of patient, deliberate strategy we think this problem requires. Congratulations to Will and the team on the Series A! Patrick Eggen, myself and the entire team at Counterpart Ventures are proud to back you! Patrick Eggen, Joe Saijo, Mikey Kailis, Abbie Wolf