AI-native software infrastructure
Rextail is building AI-native infrastructure for software created, changed, delivered, and operated by AI agents.
Rextail makes software intent, system state, permissions, changes, and outcomes machine-readable—giving agents the context and infrastructure required to work safely across the complete software lifecycle.
Intent, state, permissions, changes, and outcomes are published as structured records: what an agent reads before it acts, and what its work is verified against afterwards.
| Layer | What it states | Read by | Status |
|---|---|---|---|
| 01 / intent | what the system is required to do | agent | readable |
| 02 / state | what production is actually doing | agent | readable |
| 03 / permissions | what may be changed, and by whom | gate | readable |
| 04 / changes | what changed, and what it was for | gate | readable |
| 05 / outcomes | whether the required result held | operator | verified |
An illustration, not a live system. Context is infrastructure: an agent can only work safely on a system that can describe itself.
01 / Architecture
Four properties an autonomous software system needs from the layer beneath it. Rextail is building all four as one substrate rather than as four disconnected tools.
Intent, system state, permissions, changes, and outcomes are published as structured records rather than prose, dashboards, and tribal knowledge. An agent can read what a system is for before it changes it.
Output / context an agent can act onAgents are first-class operators of the system rather than scripts driving an interface built for a person. Work is requested, bounded, and executed through surfaces designed for software.
Output / agents as supported operatorsChanges are checked against the intent they claim to serve—before release, and again once they are live. Verification is a property of the infrastructure, not a stage someone remembers to run.
Output / changes verified, not assumedRunning software is maintained, repaired, and recovered by agents working inside explicit permissions, with actions attributable and outcomes verified.
Output / operation without a human in every loopThe complete lifecycle
One substrate carries a system from the moment an agent is given intent, through the change it makes, the release that delivers it, and the production behaviour that follows.
One layer, not four tools. Intent, state, permissions, changes, and outcomes stay connected across the whole lifecycle—which is what makes an outcome traceable back to the intent that asked for it.
02 / Products
Rextail Gate is the verification side of the lifecycle; Rook is the operating side. Both are being built on the same machine-readable record of intent, state, permissions, changes, and outcomes.
Verification infrastructure for agent-generated changes and software releases.
| Type | Verification infrastructure |
|---|---|
| Subject | Agent-generated changes and software releases |
| Lifecycle stage | Created, changed, delivered |
| Question it answers | Has this change been verified, or only produced? |
A change is not trusted because an agent made it. Gate is the verification boundary between generated software and production consequences.
An autonomous production operator that continuously verifies, maintains, repairs, and recovers critical software.
| Type | Autonomous production operator |
|---|---|
| Subject | Critical software |
| Lifecycle stage | Operated |
| What it does | Continuously verifies, maintains, repairs, and recovers |
Verify, maintain, repair, recover. Rook is designed to do the production work, not to report that it needs doing.
03 / Company
AI-native infrastructure for software development and operation—for a world where software is created, changed, delivered, and operated by AI agents.
Intent is captured as a record the generating agent can read, rather than a prompt that disappears.
Every change carries what it was for, what it touched, and which permissions allowed it.
Releases are verified against intent before they reach customers.
Production is continuously verified, maintained, repaired, and recovered.
Rextail is at the design-partner stage. The architecture should be shaped against real systems, real agents, and real production consequences rather than in isolation—which is why the first partners matter more than the first customers.
04 / Design partners
Design partners shape Rextail while it is being built. If agents already create, change, or operate software your customers depend on, this is the stage at which that experience changes the architecture rather than arriving after it.
| Who this is for | Teams where agents already create, change, or operate software that customers depend on. |
|---|---|
| What you shape | What intent, state, permissions, changes, and outcomes must express to be genuinely useful to an agent. |
| What you get | Early access to Rextail Gate and Rook as they become usable, and direct access to the people building them. |
| What we ask | One real system, honest feedback, and a working relationship rather than a procurement cycle. |