Deterministic Intelligence for Core Financial Infrastructure.
Financial infrastructure cannot run on probability. GreyStele is built so that the same inputs always give the same result, every action is recorded, and nothing leaves your control.
No probabilistic drift
The number an agent produces is the number the rules produce.
Δ 0.00
A close is sealed only when debits equal credits to the cent. There is no tolerance setting and no rounding away of a difference.
Deployed inside your perimeter
Your data stays on your infrastructure, in your region, under your keys.
- Your environment
- GreyStele runs in your cloud account or data centre. Ledger data is not sent to GreyStele.
- Your keys
- Data at rest and in transit is encrypted with keys you hold. Revoking them stops the agents.
- No training on your data
- Nothing from your systems is used to train or tune any model, GreyStele's or anyone else's.
- Least privilege
- Each agent holds only the credentials its one job needs, issued by your identity provider and expiring with the run.
Controls people keep
Agents surface exceptions. People decide them.
Thresholds are set by your controllers, not by the agents. Anything outside a threshold stops and is routed to a named person with the evidence attached. The decision, and who made it, is written into the record.
Posting back to a ledger goes through the same approval controls your team uses today. An agent cannot approve its own work, and two agents cannot approve each other's.
Evidence, not assurance
Every claim on this page can be checked in the record.
The audit record is complete, hashed and replayable. Your internal audit team and your external auditors can reproduce any run from its inputs and arrive at the same figures.
Security documentation, penetration test summaries and our compliance roadmap are shared under NDA as part of a briefing.
Bring your security team to the briefing.
We would rather answer the hard questions first. Ask for the architecture review and we will walk through it on your terms.