Payments
Payments
Grow your merchant base without growing your risk
Every good merchant you slow down or reject is lost volume. Every bad one you approve is a loss or a scheme penalty. Sardine helps you onboard merchants others can't and catch risk as it changes.


One platform for merchant risk
Underwriting, monitoring, and payment risk share one record, so what you learn at onboarding improves every later decision.

Network Intelligence beyond your portfolio
Shared signals across merchants, devices, and entities fill gaps in your own data, so even new merchants with no history get a confident decision.
Expose shell sites and linked merchants
Link merchants, domains, devices, and cards to expose shell sites and related merchants tied to violations.

Automate merchant research
Agents research each business, check declared MCCs against what it sells, and flag what needs review, so KYB moves faster with every step recorded.
Manage merchant risk from application to settlement
Merchant underwriting
Approve more of the merchants you want
Combine KYB, website presence, and acquiring data with device and behavior signals to onboard new merchant types and verticals with confidence.

Run KYB checks 90% faster across 450+ sources in 195 countries.
Analyze websites, linked domains, and social presence to compare declared MCCs and NAICS codes against actual products.
Configure rules and workflows by risk tier, industry, geography, or card-network requirements.

Merchant monitoring
Know when a good merchant starts looking different
Approval is only the start. Sardine catches sudden growth, behavioral shifts, and deterioration before they result in losses.
Merchant fraud protection
Protect every merchant from payment fraud
Merchants count on their payment provider to catch fraud, and smaller ones have no team of their own. Sardine scores every payment and links attacks across your whole portfolio.

Score every payment in real time using identity, device, behavior, and transaction history.
Investigate shared devices, IPs, emails, and cards linked to coordinated abuse across merchants.
Set rules by merchant segment, so smaller merchants are covered without a fraud team.

Compliance and scheme risk
Keep merchant risk from becoming regulatory and scheme exposure
Risky merchants push your portfolio past card-network thresholds, which brings added controls like 3D Secure, fees, and lower approval rates.
Automate merchant reviews and disputes with AI agents
AI agents take on merchant research and dispute evidence, and log every action with the reasoning behind it.

We’ve built modern risk systems in production at scale
Scalable
Scalable
Proven risk infrastructure trusted by hundreds of enterprises to protect over $1.6T in payment volume.
Real-time
Real-time
Risk decisions in milliseconds, built for payment authorization, live merchant onboarding, and ongoing monitoring.
Reliability
Reliability
99.999% uptime for always-on payment decisioning.
Enterprise-grade from day one

Soc 2 Type II

ISO 27001

Zero-data retention

GDPR compliant

Dedicated infrastructure / private cloud

Full transparency & auditability

Data encrypted at rest and in transit
Backed by the industry’s leading data platform
Device and behavior
High-confidence identity verification
Device and behavioral intelligence establishes whether a real person is present, if the environment is trustworthy, and if identity claims are consistent across sessions.


Network Intelligence
Add historical risk context
Shared signals across devices, identities, and merchants surface repeat abuse and coordinated fraud you can’t see in your own portfolio.

Rules and workflows
Auditable no-code rules and workflows
Set review paths by merchant type, escalation thresholds, and routing, with clear audit trails and no hardcoded logic.

Machine learning
Let our models do the rest
Sardine’s models score merchant applications and payments alongside your rules, with full visibility into what drives each decision.
Frequently
asked questions

How does Sardine help payments companies onboard more merchants?
Sardine combines business verification with web, device, behavioral, payment, and network intelligence to give underwriting teams more context behind every application. Configurable rules and workflows help fast-track lower-risk merchants and escalate higher-risk applications for deeper review.
How is ongoing merchant monitoring different from KYB?
KYB helps establish whether a business is legitimate at onboarding. Merchant monitoring continues after approval, looking for changes in transaction behavior, disputes, authorization rates, ownership, digital footprint, and other signals that can indicate emerging risk.
Can payments companies offer Sardine's fraud capabilities to their merchants?
Yes. Sardine's fraud decisioning can sit behind your own merchant-facing product, managed service, or payment experience, giving merchants fraud protection without requiring a separate risk stack.
How does Sardine help us stay current with PSD2, PSD3, and card-network programs?
Sardine lets you configure decisioning and workflows around PSD2 and PSD3 requirements as they take effect, AML/CTF obligations, and card-network monitoring programs such as VAMP. Every decision carries reason codes, supporting evidence, and an audit trail you can hand to a regulator or a card network.
How does Sardine help when we have limited first-party data?
Sardine combines your own data with business, device, behavioral, and network intelligence to provide additional context on merchants, users, devices, and transactions that may be difficult to assess from first-party data alone.
Which payment rails does Sardine support?
Sardine supports risk decisioning across cards and global bank payment rails including ACH, wires, SEPA, RTP, FedNow, and other account-to-account payments, with a platform designed to extend across modern payment methods.
Can Sardine support both fraud and AML teams?
Yes. Fraud prevention, merchant monitoring, transaction monitoring, investigations, rules, and case management can operate from shared risk data and workflows across Sardine.