chelsealongandGitHub
684b3d8e05
* feat(extensions): accept provides.templates and provides.scripts in manifest Extensions could only formally declare commands under `provides` (plus config/hooks/events); templates and scripts shipped by an extension were picked up purely by filename convention, with no id, description, or metadata. Add optional `provides.templates` and `provides.scripts` sections to the extension manifest schema, mirroring the preset template shape minus an authorable `strategy` (extension artifacts always resolve as replace, so a present `strategy` key is now a validation error rather than a silently accepted no-op). ExtensionManifest gains `templates`/`scripts` properties so tooling can enumerate an extension's declared artifacts directly from the manifest. An extension may now satisfy the "must provide something" rule with only a template or script, not just a command/hook/event. Addresses the manifest-schema portion of #4010; resolver authoritative-vs-convention precedence for these new sections is left for a follow-up. * fix(presets): wire extension-declared templates/scripts into resolver collect_all_layers only consulted ExtensionManifest for command resolution, leaving provides.templates/.scripts purely decorative -- a declared entry whose file didn't sit at the conventional path was validated but never resolved. Extend the existing manifest-fallback branch to cover template_type "template" and "script" the same way it already does "command": convention lookup first, manifest lookup as fallback so undeclared on-disk files keep resolving unchanged. * fix(presets): make extension manifest lookup authoritative over convention Copilot review on #4012 found the manifest-declared template/script lookup was gated on convention lookup missing first, so a stale conventional file could shadow a declared entry at a non-conventional path, and resolve() never consulted the manifest at all (only collect_all_layers() did). Add a shared _extension_manifest_declared_template() helper and check it before convention-based lookup in both resolve() and collect_all_layers(), mirroring the preset manifest precedence. Also update EXTENSION-DEVELOPMENT-GUIDE.md, which still claimed provides only supports commands and required a command or hook. * fix(presets): stop resolving symlinks in extension manifest candidate path _extension_manifest_declared_template() resolved ext_dir/rel_path before returning it, which follows symlinks in ext_dir's ancestors (e.g. macOS's symlinked tmp dir) and diverges from the unresolved paths convention-based lookup returns for the same directory. Resolve only for the traversal containment check; return the unresolved candidate. Fixes the 4 CI test failures across all OS/Python matrix jobs on #4012.
Spec Kit Extensions
Extension system for Spec Kit - add new functionality without bloating the core framework.
Extension Catalogs
Spec Kit provides two catalog files with different purposes:
Your Catalog (catalog.json)
- Purpose: Default upstream catalog of extensions used by the Spec Kit CLI
- Default State: Empty by design in the upstream project - you or your organization populate a fork/copy with extensions you trust
- Location (upstream):
extensions/catalog.jsonin the GitHub-hosted spec-kit repo - CLI Default: The
specify extensioncommands use the upstream catalog URL by default, unless overridden - Org Catalog: Point
SPECKIT_CATALOG_URLat your organization's fork or hosted catalog JSON to use it instead of the upstream default - Customization: Copy entries from the community catalog into your org catalog, or add your own extensions directly
Example override:
# Override the default upstream catalog with your organization's catalog
export SPECKIT_CATALOG_URL="https://your-org.com/spec-kit/catalog.json"
specify extension search # Now uses your organization's catalog instead of the upstream default
Community Reference Catalog (catalog.community.json)
Note
Community extensions are independently created and maintained by their respective authors. Maintainers only verify that catalog entries are complete and correctly formatted — they do not review, audit, endorse, or support the extension code itself. Review extension source code before installation and use at your own discretion.
- Purpose: Browse available community-contributed extensions
- Status: Active - contains extensions submitted by the community
- Location:
extensions/catalog.community.json - Usage: Reference catalog for discovering available extensions
- Submission: Open to community contributions via issue template
How It Works:
Making Extensions Available
You control which extensions your team can discover and install:
Option 1: Curated Catalog (Recommended for Organizations)
Populate your catalog.json with approved extensions:
- Discover extensions from various sources:
- Browse
catalog.community.jsonfor community extensions - Find private/internal extensions in your organization's repos
- Discover extensions from trusted third parties
- Browse
- Review extensions and choose which ones you want to make available
- Add those extension entries to your own
catalog.json - Team members can now discover and install them:
specify extension searchshows your curated catalogspecify extension add <name>installs from your catalog
Benefits: Full control over available extensions, team consistency, organizational approval workflow
Example: Copy an entry from catalog.community.json to your catalog.json, then your team can discover and install it by name.
Option 2: Direct URLs (For Ad-hoc Use)
Skip catalog curation - team members install directly using URLs:
specify extension add <extension-name> --from https://github.com/org/spec-kit-ext/archive/refs/tags/v1.0.0.zip
Benefits: Quick for one-off testing or private extensions
Tradeoff: Extensions installed this way won't appear in specify extension search for other team members unless you also add them to your catalog.json.
Available Community Extensions
Note
Community extensions are independently created and maintained by their respective authors. Maintainers only verify that catalog entries are complete and correctly formatted — they do not review, audit, endorse, or support the extension code itself. The Community Extensions website is also a third-party resource. Review extension source code before installation and use at your own discretion.
🔍 Browse and search community extensions on the Community Extensions website.
See the Community Extensions page for the full list of available community-contributed extensions.
For the raw catalog data, see catalog.community.json.
Adding Your Extension
Submission Process
To add your extension to the community catalog:
- Prepare your extension following the Extension Development Guide
- Create a GitHub release for your extension
- File an issue using the Extension Submission template with all required metadata
- Wait for review — a maintainer will review the submission, update the catalog, and close the issue
See the Extension Publishing Guide for detailed step-by-step instructions.
Submission Checklist
Before submitting, ensure:
- ✅ Valid
extension.ymlmanifest - ✅ Complete README with installation and usage instructions
- ✅ LICENSE file included
- ✅ GitHub release created with semantic version (e.g., v1.0.0)
- ✅ Extension tested on a real project
- ✅ All commands working as documented
Installing Extensions
Once extensions are available (either in your catalog or via direct URL), install them:
# From your curated catalog (by name)
specify extension search # See what's in your catalog
specify extension add <extension-name> # Install by name
# Direct from URL (bypasses catalog)
specify extension add <extension-name> --from https://github.com/<org>/<repo>/archive/refs/tags/<version>.zip
# List installed extensions
specify extension list
For more information, see the Extension User Guide.