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github-spec-kit/docs/install/one-time.md
Emre Değirmenci 82c078bb3a docs: clarify that release tags keep the leading v prefix (#3463)
Readers were replacing vX.Y.Z with bare versions like 0.12.11,
which fails because git tags are named v0.12.11.

Assisted-by: Cursor Grok 4.5 (supervised)

Co-authored-by: Cursor <cursoragent@cursor.com>
2026-07-13 10:27:18 -05:00

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# One-time Usage (uvx)
If you want to try Spec Kit without installing it permanently, use `uvx` to run it directly. This downloads the tool into a temporary environment that is discarded after the command finishes.
> [!NOTE]
> The commands below require **[uv](https://docs.astral.sh/uv/)**. If you see `command not found: uvx`, [install uv first](uv.md).
## Run Specify CLI
```bash
# Create a new project (latest from main)
uvx --from git+https://github.com/github/spec-kit.git specify init <PROJECT_NAME>
# Or target a specific release (replace vX.Y.Z with a tag from Releases;
# keep the leading v, e.g. v0.12.11 not 0.12.11)
uvx --from git+https://github.com/github/spec-kit.git@vX.Y.Z specify init <PROJECT_NAME>
# Initialize in the current directory
uvx --from git+https://github.com/github/spec-kit.git specify init . --integration copilot
# Or use the --here flag
uvx --from git+https://github.com/github/spec-kit.git specify init --here --integration copilot
```
## When to use persistent installation instead
If you plan to use Spec Kit regularly, a persistent installation is recommended:
- Tool stays installed and available in PATH
- No re-download on every invocation
- Better tool management with `uv tool list`, `uv tool upgrade`, `uv tool uninstall`
See the main [Installation Guide](../installation.md) for persistent installation instructions.