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Skills are how you teach Fleet Prime Agent your workflows. Two flavors: markdown skills that describe what to do, and Python skills that run real code.

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When to reach for a skill

  • You’ve explained the same procedure to the agent three times this week.
  • Your team has a shared runbook (deploy, release, incident) you want the agent to follow.
  • You want the agent to load a private CLI’s schema or a project-specific convention every time.

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Anatomy

  • MarkdownSkill — a SKILL.md file with front matter and a body. The front matter names the skill and describes when it should apply; the body is instructions the model reads on load.
  • PythonSkill — an importable Python module. Add real functions, decorators, or IPython magics that the model can invoke during a session.
Skills register through the extension runtime (ExtensionRuntime, ExtensionAPI). Registering a skill adds its tools, slash commands, and keyboard shortcuts to the session automatically.

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Load skills

Point Fleet Prime Agent at a directory of skills:
Or wire it into your config so skills load every session. Under the hood the runtime calls loadSkills and loadSkillsFromDir.

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Personal vs project

Personal skills live under your home directory and load in every session. Project skills live in the repo (usually under ./skills/) and only load when you launch Fleet Prime Agent from that repo.

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The built-in skill creator

When Fleet Prime Agent notices a recurring pattern in a session, the built-in skill creator can propose a skill from that trajectory. Accept it and the workflow becomes a first-class capability.
Last modified on August 17, 2026