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Docker·Sep 25, 2026·v3·open source

Sandbox Kit Specification

The Docker Sandbox Kit Specification v3 is an open-source standard for packaging AI agent environments, including network rules, credentials, and volumes, into a single, reproducible OCI image. It enables developers to define agent authority as code, ensuring that security policies and environment configurations are versioned, diffable, and portable across different runtimes.

AI AgentsSecurityOCIInfrastructure as Code
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overview

The Docker Sandbox Kit Specification v3 is an open-source standard for packaging AI agent environments, including network rules, credentials, and volumes, into a single, reproducible OCI image. It enables developers to define agent authority as code, ensuring that security policies and environment configurations are versioned, diffable, and portable across different runtimes.

key features
  • 01Packages agent authority, network rules, and credentials into a single OCI image
  • 02Enables reproducible and diffable security policies for AI agents
  • 03Supports composition of workloads and mixins for modular environment building
  • 04Compatible with standard OCI registries and existing container tooling
  • 05Experimental specification with a clear path toward community-driven evolution
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