* Add Figma Starter extension to community catalog Add figma-starter extension submitted by @vibhus to: - extensions/catalog.community.json (alphabetical order) - docs/community/extensions.md community extensions table Closes #3545 Assisted-by: GitHub Copilot (model: claude-sonnet-4.6, autonomous) Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * fix: add missing python3 >=3.8 version constraint in figma-starter catalog entry Assisted-by: GitHub Copilot (model: claude-sonnet-4.5, autonomous) * fix(agent-context): reduce Python subprocess overhead in PS 5.1 YAML fallback The PowerShell update-agent-context.ps1 script falls back to Python when PS 5.1 (which lacks ConvertFrom-Yaml and cannot parse YAML as JSON) reads the extension config. It previously launched Python twice: once to verify that Python 3 + PyYAML were available, and once to run a temp script file that parsed the YAML and printed JSON. On Windows CI each Python startup—plus potential Windows Defender scanning of a freshly-created .tmp file—can take several seconds. With two launches plus PS 5.1's own startup time the subprocess.run(timeout=30) threshold in test_powershell_script_discovers_nested_plan was regularly exceeded, causing the CI job to fail. Replace the two-phase approach with a single Python -c one-liner that verifies PyYAML availability, parses the YAML file, and emits JSON in one process. This halves the number of Python launches and eliminates the temp file entirely, keeping total execution time well under 30 s. Assisted-by: GitHub Copilot (model: claude-sonnet-4.5, autonomous) * revert(agent-context): restore update-agent-context.ps1 to pre-optimization state The runtime optimization (one-liner Python fallback, stderr suppression) was unrelated to the Figma Starter catalog addition (issue #3545) and removed the actionable PyYAML/parse diagnostic messages. Revert the file so the PR only contains the catalog-entry and documentation changes. Assisted-by: GitHub Copilot (model: claude-sonnet-4.6, autonomous) --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
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.