github/spec-kit v0.9.0

Spec Kit - 0.9.0

on GitHub

Install

uv tool install specify-cli --from git+https://github.com/github/spec-kit.git@v0.9.0
specify init my-project

Notice

We have migrated agent context updates to the agent-context extension and currently auto-enable it to preserve existing behavior. This compatibility fallback is deprecated and will be removed in v0.12.0; after that, explicitly enable/configure agent-context to continue automatic context updates.

What's Changed

• chore: bump version to 0.9.0
• chore: recompile workflow lock files (#2774)
• Add Multi-Sites Spec Kit extension to community catalog (#2791)
• Update Product Spec Extension to v0.8.3 (#2790)
• Publish May 2026 Newsletter (#2787)
• fix: move URL install confirmation prompt before spinner (#2783) (#2784)
• Update Reqnroll BDD extension to v1.1.0 (#2775)
• Extract agent context updates into bundled agent-context extension (#2546)
• chore(deps): bump actions/setup-dotnet from 5.2.0 to 5.3.0 (#2755)
• chore: release 0.8.18, begin 0.8.19.dev0 development (#2766)