Agent Skill

Claude Code: claude plugin marketplace add typesafe-ai/skills, then claude plugin install typesafe@typesafe-ai. Other agents: npx skills add typesafe-ai/skills --skill typesafe-ai, installed project-local unless you pass -g.

It is agent guidance rather than a runtime library, and the caveat says a stale copy can make the agent invent request or response fields, so update it after SDK changes. SKILL.md is readable on GitHub without installing.

The repository lists exactly one skill, typesafe-ai, whose stated purpose is to design TypeSafe workflows, find current docs and cookbooks, and compose typed judgments in code. It is guidance an agent reads, not a package your build imports: nothing in your application depends on it, and it does not vendor an SDK, a model or API access.

Ask in plain language. The README's example is telling your agent to use TypeSafe to route incoming support tickets by department, with human review for uncertain decisions. In Claude Code you can invoke the plugin skill explicitly as /typesafe:typesafe-ai; in other agents there is no slash command, so naming the TypeSafe skill in the prompt is what triggers it.

Yes. SKILL.md is readable on GitHub at github.com/typesafe-ai/skills under skills/typesafe-ai/SKILL.md, and the raw Markdown can be fetched directly from raw.githubusercontent.com. That makes the skill reviewable as a document, which matters given that it is the only thing standing between your agent and a hallucinated request shape.

It lives in the typesafe-ai/skills GitHub repository, which is MIT licensed and currently holds a single skill directory under skills/. Distribution differs by host: Claude Code takes the plugin marketplace route, and every other agent goes through skills.sh with npx skills add, which prompts you to pick the agent and installs project-local by default. The docs page at docs.typesafe.ai/agent-skill adds a prompt to paste to your agent, manual installation steps, and how updates work.

The README is short and points to the installation guide at docs.typesafe.ai/agent-skill#installation for three things it does not spell out: a prompt you can paste straight to your agent, how to install manually, and how updates work. That page is the canonical location, so it is where to look when the two commands above are not enough, for instance when you vendor the skill into a repository instead of installing it.