What we're building—and what we're learning.
Engineering notes, public-specification work, product releases, research, and company announcements from XSI.
Provably Ours: why XSI signs its work
A "humanizer" hides that AI helped make something. XSI does the reverse: a verifiable signature, a content fingerprint, and an invitation to check it. On EU AI Act Article 50 and the maker's mark for the agentic era.
Press release2026-07Extended Systems (XSI) now available in the Microsoft Marketplace
XSI-AIMS™ for the Microsoft Agent Framework is now available in the Microsoft Marketplace. It is the governance layer that records who authorized an agent action, under what policy, with auditable evidence.
Press release2026-07Do you have an apprentice? — XSI Apprentice™ learns a task by watching, then runs it under your sign-off
XSI Apprentice is a governed programming-by-demonstration tool built on the Microsoft Agent Framework. A worker demonstrates a repetitive task once, and Apprentice runs it only with human sign-off.
Press release2026-06XSI puts the agentic coworker in the room: voice support, now in preview
Conversational voice support is in preview for XSI LodeStone and XSI-AIMS for the Microsoft Agent Framework: an agent that joins the meeting and takes the huddle, under the same human-gated governance, on infrastructure the customer controls.
Blog2026-06The agents are already acting. The governance layer isn't there.
Agents take actions now, on someone's behalf. The layer that supervises them, on any model or cloud or none, is mostly missing. Why XSI is publishing ours in the open.
Blog2026-06Why agentic AI needs a spec
Frameworks tell you how to build an agent. A specification tells everyone what a governed agent must do. The case for XSI-AIMS as an open specification.
Blog2026-06Biodiversity of virtual lifeforms
Why the future of agentic systems looks less like one giant model and more like an organism of routed specialists, and what that demands of governance.
Press release2026-06XSI-AIMS v2.0 ships: an open governance specification for agentic systems
Extended Systems Intelligence publishes XSI-AIMS v2.0 with the public agent registry and commercial implementations XSI Atlas™ and XSI Compass™. Substrate-, model-, and deployment-agnostic.
Blog2026-06Least-cost routing, reborn
Requirements-scored routing in XSI Compass: the cheapest model that meets each call's declared requirements, on every call.
Blog2026-06Why does XSI-AIMS have eight kinds of memory?
Eight memory subsystems and the TMS bus that ties them together: how XSI Atlas routes memory across the XSI-AIMS architecture.
Milestone2026-05XSI-AIMS™ for MAF listing approved on Microsoft AppSource
Microsoft approved XSI-AIMS™ for the Microsoft Agent Framework for listing on AppSource. The Contact-Me listing went live June 22.
Press release2026-06XSI-AIMS™ for the Microsoft Agent Framework is live on AppSource
A substrate runtime of the XSI-AIMS open specification is live on Microsoft AppSource, one click from any team building on the Microsoft Agent Framework.