Browse reusable Agent Skills, each with a clear purpose and practical guidance.
Create a new extension kind — a reusable default implementation for an extension type. Use when multiple extensions of the same type share the same element/API implementation and only differ in configuration. Kinds reduce boilerplate by providing pre-built defaults that extensions customize via meta.
Create a new package in the Umbraco backoffice client with its first module. Use when adding a new domain feature area that needs its own package under src/packages/ — e.g., a new CMS feature like data types, tags, or relations. Packages are self-contained domain modules that can theoretically be uninstalled independently. Also use when the user says things like "scaffold a new package", "add a new feature package", or "create a new domain module".
Create or extend a repository in the Umbraco backoffice. Covers detail (CRUD), item (batch lookup), collection (paginated list), and action-specific (publish, duplicate, move, etc.) repositories. Use when the user says "create a repository", "add a data source", or when a feature needs to fetch or post data. Each repository type has its own template — pick the right one based on the operation.
Create a new workspace for an entity in the Umbraco backoffice. Supports two workspace types — default (simple, manifest-only, for root/listing pages) and routable (entity detail editing with create/edit flows). Use when the user says "create a workspace", "add a workspace for X", or "scaffold a workspace". For routable workspaces, the entity must already have a package, entity type, repository, and data source.
Deprecate a public API (class, method, property, type, constant, or context token) following the 2-major-version rule. Use when removing or replacing any publicly exported symbol that external consumers may depend on — includes exports from package index.ts files, global components, extension type aliases, and manifest schemas.
Bump the Umbraco CMS version across all required files. Use when the user asks to bump, update, or set the version number — e.g., "bump version to 17.3.4", "set version to 18.0.0-rc", "update version". Accepts the target version as an argument.
Improve a set of auto-generated GitHub release notes for an Umbraco CMS release. Cross-checks the notes against every PR carrying the release label, adds any that are missing, re-files every PR under the most appropriate category, and strips purely-internal entries. Use whenever the user asks to tidy up, improve, complete, or recategorize release notes for a given version, or mentions a release-notes text file plus a version number.
Automated PR code review for Umbraco CMS. Analyzes changed files for intent, impact on consumers, breaking changes, architecture compliance, and code quality. Non-interactive — outputs a full structured review. Use this skill whenever the user asks to review a branch, review a PR, check their changes for issues, analyze a diff, or validate breaking change patterns — even if they don't say "review" explicitly. Does NOT apply to writing new code, fixing bugs, refactoring, explaining architecture, writing tests, or reviewing documentation content.