Jonathan Hefner ab2ff8db3d Address upstream feedback for well-known URI doc
Add guidance for clients to warn the user when encountering an
unrecognized `type` value in skill entries, both in the format
description and client implementation steps.

Add a "Prompt injection" bullet to security considerations, noting that
skill content is loaded into agent context and can alter agent behavior.

Reword the "Trust" bullet to focus on why trusted origins matter (skills
run in agent context with access to the user's environment) and reorder
security considerations: Trust, Prompt injection, Script execution,
Digest verification, Archive safety.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ab2ff8db3d · 2026-03-23 15:06:43 -05:00
69 Commits
2025-12-18 08:46:08 -05:00
2026-02-16 13:24:53 -06:00

Agent Skills

Agent Skills are a simple, open format for giving agents new capabilities and expertise.

Skills are folders of instructions, scripts, and resources that agents can discover and use to perform better at specific tasks. Write once, use everywhere.

Getting Started

This repo contains the specification, documentation, and reference SDK. Also see a list of example skills here.

About

Agent Skills is an open format maintained by Anthropic and open to contributions from the community.

License

Code in this repository is licensed under Apache 2.0. Documentation is licensed under CC-BY-4.0. See individual directories for details.

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