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The intelligence layer for payments

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Your payments stack
deserves wisdom.

Sayfin delivers behavioral intelligence and predictive execution across the payment stack: real-time decisions for traditional commerce and autonomous transaction systems.

Explore the API
<15msSub-15ms execution
LiveAlways learning
ZeroNon-intrusive deployment
StackPortfolio-level impact

The layer your stack
has been missing.

Sayfin sits invisibly between your infrastructure and the network. It reads signals no rule can model. It decides in milliseconds.

01

Predictive Decisioning

Real-time probability scoring across every acquirer, before you route.

<15ms

execution latency

02

Behavioral Intelligence

Every cardholder has a pattern. Sayfin reads it across every transaction.

Per-client

adaptive model

03

Continuous Learning

Every outcome improves the model. The system never stops learning.

Auto

retraining on every batch

04

Revenue Recovery

Recover revenue your current infrastructure is leaving behind.

+20–40%

soft decline recovery

05

Zero Disruption

One API call. Your existing stack stays intact. Full fail-safe if unreachable.

D 1–3

days to go live

Ingest. Predict.
Optimize.

Three phases. One continuous loop. Every transaction makes the next one smarter.

01 Ingest & Unify

Aggregate payment, identity, issuer, and acquirer data into a unified signal stream. Every cardholder. Every BIN. Every acquirer pattern.

02 Predict & Route

Behavioral AI scores approval probability in under 15ms. The single highest-confidence route is selected before the processor ever sees the transaction.

03 Optimize Continuously

Every outcome feeds the model. Issuer shifts trigger automatic recalibration. No manual rule updates. No threshold tuning. No stale logic.

04 Recover Revenue

60–70% of soft declines are recoverable with the right behavioral context. Sayfin recovers them silently before the processor ever returns a decline code.

sayfin intelligence

Every signal.
Connected.

sayfin BIN INTEL UK · Visa · 4832 AUTH HISTORY 12 of 12 ✓ GEO SIGNAL London, GB ISSUER HSBC · Active IDENTITY Verified ✓ BEHAVIOR 94.3% match FREQUENCY 3.2x monthly ORDER DATA £284.70 ROUTING Acquirer B ↑ MID PATTERN 87.1% lift VELOCITY 148 txn/s NETWORK FP Low risk

Sayfin weaves cardholder behavior, geographic signals, BIN intelligence, MID patterns, frequency, velocity, and acquirer dynamics into a single probabilistic view.

When the buyer
is an AI agent.

Agentic commerce operates at machine speed. Transactions are initiated by autonomous software agents. Small inefficiencies compound rapidly. Decision intelligence becomes structural.

15ms execution latency
Identity cryptographically verified
Modeled continuously, in real time
Visa Intelligent Commerce Mastercard Agent Pay OpenAI ACP Google Agent Commerce Stripe Agent Toolkit

Stop paying for failures
you could have predicted.

Every retry attempt carries a network fee, interchange cost, and customer friction penalty. Sayfin scores approval probability before you route — so you only send transactions that will succeed.

Latency

<15ms

Pre-auth decision latency p95

Approval Lift

+2–7%

Average authorization lift across deployments

Recovery

20–40%

Soft declines recoverable pre-attempt

Cost

$0

Wasted retry fees on predicted failures

Static retry loops waste fees on transactions that have already failed behaviorally. Sayfin intercepts before the processor sees them.

Get access →

Static rules lose money.
Consistently.

Every retry attempt carries a network fee, interchange cost, and customer friction penalty. Sayfin scores approval probability before you route — so you only send transactions that will succeed.

01

Soft declines are recoverable.

Unlike hard declines, soft declines represent real customers whose transactions can be routed correctly. 60–70% can be recovered with probabilistic intelligence.

02

Involuntary churn compounds the loss.

Subscription failures from soft declines silently erode MRR. Every failed retry is a customer you lose without knowing why.

03

Static rules cannot adapt.

Issuer behavior shifts in real time. Rule-based routing can't keep pace. Every change requires a human to intervene.

04

Silos blind the entire stack.

Each PSP sees only its own data. No cross-network intelligence. No pattern recognition across issuers or BINs.

Built for complex
payment environments.

PSPs

Lift authorization rates

Behavioral decisioning across your entire client base. Instantly.

Acquirers

Maximize approval yield

Portfolio-level intelligence, unified from a single probabilistic view.

Agentic

AI-native infrastructure

For autonomous, machine-initiated transactions.

Orchestration

Intelligent routing

Every routing decision intelligent by default.

PayFacs

Protect portfolio

Reduce merchant churn from involuntary payment failures.

Issuers

Reduce friction

Eliminate false decline friction without increasing fraud exposure.

The Platform

Real-time intelligence,
every transaction.

Sayfin Live
Today 7d 30d

Auth Rate

94.7%

+2.3% vs baseline

Latency p95

<12ms

Pre-auth decision

Recovered

$2.4M

+$180k this week

Signals

847

Active network-wide

Authorization Lift — 30d

+2.3%

Live Decisions

APPROVE Visa ••4819 $284.50
ROUTE MC ••2274 $1,204.00
BLOCK Amex ••9301 $89.99
APPROVE Visa ••7752 $432.10
ROUTE MC ••6103 $756.00

Live in days.
Zero infrastructure replacement.

One API call. Your existing stack stays intact. HMAC-SHA256 authentication. Python and TypeScript SDKs. Full REST API. Full fail-safe if unreachable.

D 1–3

Integration

Single API endpoint. HMAC-SHA256. Python and TypeScript SDKs. Your stack stays intact.

D 4–7

Model Training

Ingest historical logs. Train a dedicated model on your exact traffic patterns.

Wk 2

Shadow Mode

Live predictions. Zero production impact. Compare our routing vs. yours.

Wk 3–4

Go Live

1% to 100%. Scale with measured uplift. Pay only when we perform.

Non-intrusive

One API endpoint. Nothing else changes.

Fail-safe

If Sayfin is unreachable, transactions route normally. Always on.

Performance-based

You only pay when we perform.

POST /v1/route 200 OK · 7.2ms
// Request
"transaction_id": "txn_8f2k9d",
"amount": 284700,
"currency": "GBP",
"card_bin": "483204",
"merchant_id": "mer_xyz"
// Response
"route": {
"acquirer": "acquirer_b",
"probability": 0.943,
"confidence": "high"
},
"latency_ms": 7.2
Sub-15ms p95 · 7.2ms avg ✓ Embedded inference
SAYFIN
Behavioral Intelligence  ✦  Predictive Routing  ✦  Revenue Recovery  ✦  Agentic Commerce  ✦  Real-time Decisioning  ✦  Sub-15ms Execution  ✦   Behavioral Intelligence  ✦  Predictive Routing  ✦  Revenue Recovery  ✦  Agentic Commerce  ✦  Real-time Decisioning  ✦  Sub-15ms Execution  ✦  

Ready to start?

Your declines
are your revenue.

Explore the API