Our story and mission
About Sibylline.
Sibylline blends industry founders and a battle-tested platform in service of one mission: to build the financial frontier.
Where this came from
Origins
Sibylline was formed in 2023 by product executives and engineers out of finance, technology and cybersecurity. We had been running AI agents at scale since 2021, and the gap was already obvious: the financial system was never built for software that acts on its own behalf.
So we built the missing parts ourselves rather than waiting for someone else to. Sumvin is the primitive layer — identity, authorization and settlement. Atlas is the platform those agents run on. The studio takes both into production alongside our partners’ own teams.
The name comes from the Sibylline oracles, who dealt in foresight. We take the less mystical route: build the thing rather than predict it.
Mission
One mission: build the financial frontier. That means shipping the rails agent-initiated money actually needs, and proving them on real volume rather than in a demo.
Sumvin is the flagship venture born out of this studio, and Sibylline is the services arm around it. Forward-deployed engineers embed with your team and build on the same primitives and platform we run ourselves — from the first commit through to the first real users.
We stay after launch, because the work has to hold up in production, not in a pitch.
The model
Forward-deployed, on our own stack
Most firms that will sell you an AI programme are starting from your requirements and a blank repository. We are starting from a payments stack that is already in production, and the engineers who put it there.
Four layers of the stack — Sigil, Errand, Envoy and Atomic Money — are built and running in production. A programme that starts from nothing spends its first two to three quarters reaching that point. Yours starts at the fifth stop, your own use case.
- 01Sigilidentity
- 02Errandmandates
- 03Envoyagent runtime
- 04Atomic Moneysettlement
- 05Your use casewhere we start
01–04 · Most programmes spend two to three quarters getting this far
01 · A conventional programme starts here
05 · You start here
Four layers already stand. Week one starts at the fifth — the part only you can specify.
01
Engineers in your team, not a statement of work
Forward-deployed means what it says. Our engineers sit in your standups, commit to your repositories and are accountable for the thing working — not for a document describing how it might.
02
We run this stack ourselves
Sumvin is our own venture, built on Atlas and shipped to production. When something in the substrate is wrong for your use case, we fix it at the source rather than working around it.
How we work
Four stages, and we are still there after
No discovery theatre. The hard part of an agentic system is not the demo, it is everything the demo elides — so the riskiest path through the whole stack gets proven before anything gets polished.
- Sibylline engineers
- your team
the lanes cross at Productise
The work is fully held in every phase. What moves across the band is whose hands are on it.
What we build
Two shapes of engagement
Both run on the same substrate. The difference is who the agent is acting for — your operators, or your customers.
Internal agentic finance
Tools your own operators use — treasury, procurement, reconciliation, vendor spend — with scoped authority and an audit trail.
Productised for your customers
A consumer or business product with identity, mandates and money built in, shipped under your brand on our primitives.
What happens next
Have an agentic finance use case?
Bring us the problem. We will tell you what it takes on our stack — and then build it with you.