Free · No gate
How SENTR works
Ingest → detect → decide → explain → investigate → improve — beside the stack you already run.
Read the explainer →Resources
Make the next decision with a clearer picture.
All free. No sales call attached.
Guides, frameworks and tools for risk and compliance teams at European payment businesses.
Start with the question you need answered.
For evaluators
Shadow Mode overview
A plain-English walkthrough of how the qualified 50-day read-only evaluation works — and what you decide at Day 50.
How Shadow Mode works →For compliance leads
EU AI Act notes
How explainability evidence relates to deployer assessment. SENTR produces evidence — compliance remains yours.
Read the notes →For operations leads
Fraud operations readiness
A self-read canvas across owners, events, data and proof conditions — practical questions to prepare or work through with us.
Open the readiness canvas →Featured resource
Shadow Mode · Free · No gate
Shadow Mode: How the 50-day parallel evaluation works
What Shadow Mode is, how the read-only connection works, what happens during the parallel run, and what you decide at Day 50. Qualified SENTR.Citadel evaluation — your incumbent stays live.
More resources
Free · No gate
Provider-native or independent
When a provider fraud tool is enough, and when a separate decision layer helps. Compared by approach.
Read the decision guide →Free · Optional email
SENTR Insights
The public notes, and a separate email series that starts only if you subscribe.
Open Insights →Free · No gate
Provider-native vs independent layer
When included processor tools are enough — and when fragmentation across events or investigation justifies a separate decision layer.
Read the comparison →Free · Interactive
Fit & Value
Explore which way of operating SENTR fits your team, with a reasoned recommendation and no email required.
Find your operating model →Free · No gate
Pricing method
Compare both operating models, inspect SENTR.Citadel rates and use the product-aware cost and value calculator.
See pricing →Free · No gate
Product status
Inspect available AI scoring, rule-building and operational capabilities, with a separate view of what remains on the roadmap.
Open product status →Free · No gate
Security & data
Entity, hosting regions, subprocessors and public control facts. Restricted packs go through a security review.
Read security & data →Turn the reading into a working conversation.
Book a 60-minute Architecture Session. We map your current risk setup and tell you whether Shadow Mode, SENTR.Tower fit or Discovery is the honest next step — or whether it is not a fit.
- Ungated Fit & Value
- Choose a session for your question
- Optional, qualified SENTR.Citadel Shadow Mode
Take the useful next step
Book a Session → Find your operating model →No pitch deck. If it is not a fit, we will say so on the call.
Insights
SENTR Insights
Five practical emails on fraud decisions, investigations and proving what works. Relevant SENTR insights, with no obligation to book.