Manage agent skills with gh skill (Public Preview)

Agent skills are portable sets of instructions, scripts, and resources that teach AI coding agents how to perform specific tasks. The new gh skill command makes it easy to discover, install, manage, and publish agent skills from GitHub repositories - right from the CLI.

# Discover skills
gh skill search copilot

# Preview a skill without installing
gh skill preview github/awesome-copilot documentation-writer

# Install a skill
gh skill install github/awesome-copilot documentation-writer

# Pin to a specific version
gh skill install github/awesome-copilot documentation-writer --pin v1.2.0

# Check installed skills for updates
gh skill update --all

# Validate and publish your own skills
gh skill publish --dry-run

Skills are automatically installed to the correct directory for your agent host. gh skill supports GitHub Copilot, Claude Code, Cursor, Codex, Gemini CLI, and Antigravity. Target a specific agent and scope with --agent and --scope flags.

gh skill publish validates skills against the Agent Skills specification and checks remote settings like tag protection and immutable releases to improve supply chain security.

Read the full announcement on the GitHub Blog.

gh skill is launching in public preview and is subject to change without notice.

Official extension suggestions

When you run a command that matches a known official extension that isn't installed (e.g. gh stack), the CLI now offers to install it instead of showing a generic "unknown command" error.

This feature is available for github/gh-aw and github/gh-stack.

When possible, you'll be prompted to install immediately. When prompting isn't possible, the CLI prints the gh extension install command to run.

gh extension install no longer requires authentication

gh extension install previously required a valid auth token even though it only needs to download a public release asset. The auth check has been removed, so you can install extensions without being logged in.

What's Changed

✨ Features

• Add gh skill command group: install, preview, search, update, publish by @SamMorrowDrums in #13165
• Suggest and install official extensions for unknown commands by @BagToad in #13175
• gh skill publish: auto-push unpushed commits before publish by @SamMorrowDrums in #13171
• Disable auth check for gh extension install by @BagToad in #13176

🐛 Fixes

• Fix infinite loop in gh release list --limit 0 by @Bahtya in #13097
• Ensure api and auth commands record agentic invocations by @williammartin in #13046
• Disable auth check for local-only skill flags by @SamMorrowDrums in #13173
• URL-encode parentPath in skills discovery API call by @SamMorrowDrums in #13172
• Fix: use target directory remotes in skills publish by @SamMorrowDrums in #13169
• Fix: preserve namespace in skills search deduplication by @SamMorrowDrums in #13170

📚 Docs & Chores

• docs: include PGP key fingerprints by @babakks in #13112
• docs: add sha/md5 checksums of keyring files by @babakks in #13150
• docs: fix SHA512 checksum for GPG key by @timsu92 in #13157
• docs(skill): polish skill commandset docs by @babakks in #13183
• Document dependency CVE policy in SECURITY.md by @BagToad in #13119
• Replace github.com/golang/snappy with klauspost/compress/snappy by @thaJeztah in #13048
• chore: bump to go1.26.2 by @babakks in #13116
• chore: delete experimental script/debian-devel by @babakks in #13127
• Suggest first party extensions by @williammartin in #13182
• Add cli/skill-reviewers as CODEOWNERS for skills packages by @BagToad in #13189
• Add @cli/code-reviewers to all CODEOWNERS rules by @BagToad in #13190
• Address post-merge review feedback for skills commands by @SamMorrowDrums in #13185
• Fix skills-publish-dry-run acceptance test error message mismatch by @SamMorrowDrums in #13187
• Skills: replace real git in publish tests with CommandStubber by @SamMorrowDrums in #13188
• Remove redundant nil-client fallback in skills publish by @SamMorrowDrums in #13168
• Publish: use shared discovery logic instead of requiring skills/ directory by @SamMorrowDrums in #13167

Dependencies

• chore(deps): bump github.com/klauspost/compress from 1.18.4 to 1.18.5 by @dependabot[bot] in #13071
• chore(deps): bump github.com/yuin/goldmark from 1.7.16 to 1.8.2 by @dependabot[bot] in #13045
• chore(deps): bump charm.land/bubbles/v2 from 2.0.0 to 2.1.0 by @dependabot[bot] in #13051
• chore(deps): bump github.com/sigstore/timestamp-authority/v2 from 2.0.3 to 2.0.6 by @dependabot[bot] in #13152
• chore(deps): bump github.com/google/go-containerregistry from 0.21.3 to 0.21.4 by @dependabot[bot] in #13129
• chore(deps): bump github.com/sigstore/protobuf-specs from 0.5.0 to 0.5.1 by @dependabot[bot] in #13128
• chore(deps): bump github.com/in-toto/attestation from 1.1.2 to 1.2.0 by @dependabot[bot] in #13044
• chore(deps): bump advanced-security/filter-sarif from 1.0.1 to 1.1 by @dependabot[bot] in #12918
• chore(deps): bump google.golang.org/grpc from 1.79.3 to 1.80.0 by @dependabot[bot] in #13076
• chore(deps): bump github.com/hashicorp/go-version from 1.8.0 to 1.9.0 by @dependabot[bot] in #13065

New Contributors

• @thaJeztah made their first contribution in #13048
• @Bahtya made their first contribution in #13097
• @timsu92 made their first contribution in #13157
• @SamMorrowDrums made their first contribution in #13173

Full Changelog: v2.89.0...v2.90.0