Skills

Reusable expertise. Module: regista/skills.py.

A Skill is declarative data: a named instruction fragment plus the tools that make it actionable. Loading skills into an Agent appends each fragment to the system prompt as an Instructions section titled Skill: {name} and registers the tools alongside the agent's own.

from regista import Agent, Skill

reviewer = Skill(
    name="code-review",
    instructions="Review diffs for correctness first, style second. Cite line numbers.",
    tools=[fetch_diff, post_comment],
)

agent = Agent(provider=..., instructions="You are a maintainer.", skills=[reviewer])

Skills compose: pass several and each becomes its own section, each tool joins the one registry (a name collision with an existing tool fails fast at construction, like any duplicate).

Nothing new to trace

A skill is sugar over two primitives that are already recorded: the rendered instructions (fragments included) and the full tool schemas land in session.start exactly as always, plus the skill names for provenance. A skilled session therefore replays like any other — there is no separate "skill state" to persist or reconstruct.