AI agent skills, which became common in 2025, have traditionally been distributed using Git repositories. A new approach allows these skills to be delivered via NuGet packages, offering an alternative distribution mechanism.
Distributing skills through NuGet packages addresses two main issues: filling gaps in AI model knowledge and prescribing specific task approaches. This method ensures that new skills are available immediately, preceding model training cycles, which facilitates just-in-time skill delivery.
Agents can access and learn from content within the NuGet cache, including README.md files and assembly metadata, to understand package functionalities.
Skills are defined in markdown files named SKILL.md, which include a YAML header, following the agentskills.io specification. This format is consistent for both conventional and NuGet-delivered skills.
An example skill demonstrates how to direct agents to perform vulnerability checks on project dependencies using the `dotnet package` command to list vulnerable NuGet packages.
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AI agent skills, previously distributed via Git repositories, can now be delivered through NuGet packages. This new distribution method allows for just-in-time skill delivery, ensuring agents have access to the latest capabilities ahead of model training.