Skills

Overview

A skill is a Markdown instruction file in the Agent Skills format. Environments list skills by name; each session gets them written to .claude/skills/<name>/SKILL.md, where Claude Code loads them on demand. Skills are versioned. Adding a skill whose name already exists creates version N+1; environments pin the exact version they resolved at creation, so editing a skill never changes an existing environment version.

veri skills add pdf-processing --file ./skills/pdf.md -d "Use when the task involves PDF files" --allowed-tool Read --allowed-tool Bash
veri skills list
veri skills get pdf-processing --version 1
veri skills delete pdf-processing

client.skills.add(
    "pdf-processing",
    open("skills/pdf.md").read(),
    description="Use when the task involves PDF files",
    allowed_tools=["Read", "Bash"],
)

Field	Meaning
`name`	`[a-z0-9][a-z0-9_-]{0,63}`. Reusing a name adds a version.
`description`	One line the harness uses to decide when the skill applies.
`instructions`	The SKILL.md body. At most 256 KiB per skill, and 256 KiB total per environment.
`allowed_tools`	Advisory tool list written into the skill’s frontmatter.

Reference a skill from an environment as "pdf-processing" (latest at creation time) or "pdf-processing@2" (pinned).

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Overview