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Docker and CNCF partner on an open spec for agent permissions
Docker and CNCF: Making what an agent may do as portable as the agent itself
Ten years ago, the software industry faced a choice. Every vendor could ship its own image format and its own runtime, and developers would have to pick a side. Or the industry could agree on one artifact. The second option won. Docker donated its image format and the Runc runtime to the Linux Foundation, and the Open Container Initiative (OCI) formed around them. Today, a Docker image built anywhere can run anywhere. The format is the backbone of the cloud native ecosystem and a de facto standard.
Now, we see a similar problem forming around agents. There is no shared format for what an agent is allowed to do. We are proposing the same kind of answer: one artifact, built on OCI, governed in the open.
Containers were built for immutable software. The image is the application. If you want to change it, you rebuild it, and it behaves the same way everywhere. That’s why a container image describes how software is built and says nothing about what it may do once it runs. For a web service, that was fine. It got a network and a port, and that was enough.
Agents are mutable by definition. Claude Code and Codex install packages, call APIs, and use credentials on your behalf. They change the environment they run in, and they decide what to do next. So, every team writes its own rules for what an agent may reach: a network rule here, a token there, a volume mount to get a task done. Those rules live in shell history, in dashboards, and in someone’s memory. A few months in, nobody can answer a simple question: what is this agent allowed to do?
Every team answers that on its own today, and every runtime vendor could ship its own way of answering it. That’s the kind of fragmentation OCI was created to prevent.
Kits are not new. Kits have been part of Docker Sandboxes as the way you package an agent, its tools, and what it may reach into something a team can share. What’s new is the artifact. A Kit is now an ordinary OCI image, and the format that describes it is open.
Today at WeAreDevelopers, we announced the Docker Sandbox Kit Spec, open source under Apache 2.0. A Kit carries three things in one image: the agent, its tools, and a typed list of everything it asks to reach, such as hosts, credentials, and volumes. Because the list is part of the image, pinning the image pins the agent and its requests together.
A Kit is not a new artifact type and not a fork of any OCI specification. It uses an extension point OCI already defines. It builds, pushes, pulls, signs, and scans like any image you run today, because it is one.
Today, we’re bringing the spec to CNCF, under their neutral governance, just like we did when the image format went to OCI.
Adoption is free. Because a Kit is an OCI image, every registry, scanner, and signing tool you already run handles it. There is nothing new to deploy.
Docker and CNCF: Making what an agent may do as portable as the agent itself
Ten years ago, the software industry faced a choice. Every vendor could ship its own image format and its own runtime, and developers would have to pick a side. Or the industry could agree on one artifact. The second option won. Docker donated its image format and the Runc runtime to the Linux Foundation, and the Open Container Initiative (OCI) formed around them. Today, a Docker image built anywhere can run anywhere. The format is the backbone of the cloud native ecosystem and a de facto standard.
Now, we see a similar problem forming around agents. There is no shared format for what an agent is allowed to do. We are proposing the same kind of answer: one artifact, built on OCI, governed in the open.
Containers were built for immutable software. The image is the application. If you want to change it, you rebuild it, and it behaves the same way everywhere. That’s why a container image describes how software is built and says nothing about what it may do once it runs. For a web service, that was fine. It got a network and a port, and that was enough.
Agents are mutable by definition. Claude Code and Codex install packages, call APIs, and use credentials on your behalf. They change the environment they run in, and they decide what to do next. So, every team writes its own rules for what an agent may reach: a network rule here, a token there, a volume mount to get a task done. Those rules live in shell history, in dashboards, and in someone’s memory. A few months in, nobody can answer a simple question: what is this agent allowed to do?
Every team answers that on its own today, and every runtime vendor could ship its own way of answering it. That’s the kind of fragmentation OCI was created to prevent.
Kits are not new. Kits have been part of Docker Sandboxes as the way you package an agent, its tools, and what it may reach into something a team can share. What’s new is the artifact. A Kit is now an ordinary OCI image, and the format that describes it is open.
Today at WeAreDevelopers, we announced the Docker Sandbox Kit Spec, open source under Apache 2.0. A Kit carries three things in one image: the agent, its tools, and a typed list of everything it asks to reach, such as hosts, credentials, and volumes. Because the list is part of the image, pinning the image pins the agent and its requests together.
A Kit is not a new artifact type and not a fork of any OCI specification. It uses an extension point OCI already defines. It builds, pushes, pulls, signs, and scans like any image you run today, because it is one.
Today, we’re bringing the spec to CNCF, under their neutral governance, just like we did when the image format went to OCI.
Adoption is free. Because a Kit is an OCI image, every registry, scanner, and signing tool you already run handles it. There is nothing new to deploy.