Advanced authentication for agentic payments and instant settlement - the modern risk and intelligence layer for bank payments.
GrailPay's mark, a green “G” on midnight navy - the badge of a New York fintech trying to make a $86-trillion payment rail think before it moves money.
GrailPay sells something most people never think about until it fails: certainty that a bank payment will clear, that the account is real, and that the party on the other end is who they claim to be. The New York company builds a software layer that sits on top of ACH and instant bank rails, scoring each transaction for fraud, credit and identity risk before the money leaves.
Bank payments are enormous and, by fintech standards, strangely under-served. ACH alone processes north of $86 trillion a year, yet the tooling around it - verification, risk scoring, indemnification - has lagged the decades of innovation poured into credit cards. GrailPay's pitch is to close that gap: give fintechs, processors, lenders and software companies a single API that turns a risky bank transfer into a de-risked one.
The company frames its work around where payments are heading - instant settlement, stablecoins, and “agentic” commerce where AI agents move money on a business's behalf. In that world, the question is not just how fast money can move, but whether the risk decision can keep pace. GrailPay is building for that pace.
“Credit cards have seen decades of innovation. But the same hasn't happened for bank payments. We're building the modern intelligence layer to unlock the next growth wave.”- Will Messina, Co-Founder & CEO
GrailPay's platform is modular - customers can adopt a single risk feature or run everything from verification through settlement in one place.
Real-time risk scoring on each payment, blending fraud, identity and credit signals to decide whether money should move.
Bank account validation with roughly 99% US coverage, including real-time routing and account checks.
Live account connections for balance checks, account-owner identity verification and transaction oversight.
Standard, fast and instant ACH plus flexible settlement and payout routing through one interface.
Dynamic indemnification on underwritten transactions to shift risk off the platform's books.
A proprietary data network that verifies counterparties and compounds risk intelligence across GrailPay's customer base.
GrailPay's customers are fintechs, payment platforms and processors, lenders, banks and software companies that embed payments into their products. These are businesses where a single failed or fraudulent bank transfer can mean real losses, chargebacks or compliance headaches. The company reports supporting more than 10,000 businesses.
The problems are familiar to anyone who has run an ACH program: payments that fail after the fact, accounts that can't be verified, fraudsters who slip through onboarding, and settlement that arrives too slowly to manage risk. GrailPay's answer is to move the decision upstream - score the risk, verify the account and confirm the identity before authorizing the transfer, then move the money on the rail that fits.
Because the platform is API-first and modular, a lender might use only account and identity verification, while a payments platform runs the full stack from onboarding through guaranteed settlement. GrailPay pairs the software with what it describes as white-glove support for fintech customers.
The through-line is de-risking. Every product exists to answer one question a business must ask before it presses send: is this bank payment safe to make right now?
Bank-payment tooling is a crowded field - account verification here, fraud scoring there, money movement somewhere else. GrailPay's wager is that combining them into one intelligence layer, tuned for instant and agentic B2B payments, is more useful than a stack of point tools.
| Capability | Typical point tools | GrailPay's approach |
|---|---|---|
| Risk scoring | Separate fraud vendor | Real-time score bundled with movement |
| Account verification | Standalone API | ~99% US coverage in-platform |
| Money movement | Processor integration | ACH, fast & instant via one API |
| Risk transfer | Rarely offered | Guaranteed ACH indemnification |
| Data network | Siloed per vendor | Shared Payments Identity Network |
Competitors and alternatives include bank-payment and verification players such as Plaid, Sardine, Trustly, Dwolla, Moov and Astra. GrailPay positions itself less as a rail and more as the decision layer that makes any rail safer to use.
GrailPay has raised about $18 million since 2021. The Series A, led by MissionOG, arrived as the company reported approaching $5 billion in annualized payment volume - roughly a 20-fold jump year over year.
| Round | Amount | Date | Lead & Investors |
|---|---|---|---|
| Seed | $6.7M | Jun 2025 | Construct Capital (lead), Commerce Ventures, Broadhaven Ventures, Soma Capital, Grasshopper Bank |
| Series A | $10.5M | Jun 2026 | MissionOG (lead), EJF Ventures, Counterpart Ventures, Construct Capital, Commerce Ventures, SSC Venture Partners |
GrailPay was founded in 2021 by Will Messina (Co-Founder & CEO) and Lee Jones (Co-Founder & CTO). Messina committed to the company full-time after graduating in 2022. The team numbers roughly 23 people and works from 447 Broadway, in Manhattan's SoHo neighborhood.
The business model is B2B: GrailPay sells API access to its risk, verification and money-movement products, typically earning through a mix of per-transaction and API pricing alongside payment-processing economics. The modular design means customers can start narrow and expand.
Its expertise sits at the intersection of payments infrastructure, machine learning and risk modeling - building the data network and models that let a bank payment be scored in real time. The Series A funds go toward data analytics, modeling research, go-to-market in agentic and instant payments, and expanding the Payments Identity Network.
Where it fits: GrailPay is infrastructure. It rarely touches the end consumer. Instead it sits behind the fintechs and platforms that do, quietly deciding whether each bank payment is safe to make.
Will Messina and Lee Jones start GrailPay in New York to build a risk layer for bank payments.
Will Messina commits full-time to GrailPay after graduating.
GrailPay raises $6.7M led by Construct Capital to build the risk and intelligence layer for bank payments.
MissionOG leads a $10.5M Series A as GrailPay approaches $5B in annualized payment volume.
GrailPay provides a risk and intelligence layer for bank payments - real-time transaction risk scoring, bank account and identity verification, open banking connections, and ACH/instant money movement, all via API.
GrailPay was founded in 2021 by Will Messina (Co-Founder & CEO) and Lee Jones (Co-Founder & CTO), and is headquartered in New York.
About $18 million total, including a $6.7M seed round in 2025 and a $10.5M Series A led by MissionOG in 2026.
Fintechs, payment platforms and processors, lenders, banks and software companies embedding payments. GrailPay reports supporting over 10,000 businesses.
It bundles risk scoring, account and identity verification, and money movement into a single intelligence layer purpose-built for instant, agentic and B2B bank payments, rather than offering these as separate point tools.