Graphic tutorial: Driving development with Spec Kit specifications, from specifying init to generating implementation图文教程：用 Spec Kit 跑通规格驱动开发，从 specify init 到生成实现一遍走完

Fastest way: Installed uv direct execution uv tool install specify-cli --from git + https://github.com/github/spec-kit.git @ v1.2.1.

For Python users without uv, download the official PyPI sdist package of this article and perform pip install specify-cli-1.2.1.tar.gz offline installation.

After installation, execute specify --version to confirm output 1.2.1, indicating that the link is up.

Specify init project name in the project directory. The tool will list the supported agents such as Claude Code, Codex, Gemini CLI, Cursor, etc., and choose the one you commonly use.

Initialization generates a .specify directory (with specifications and templates) and a slash command file specific to the agent.

Open the AI agent, confirm that it can recognize the command at the beginning of the/speckit, and restart the session to reload the command if it cannot be recognized.

/speckit.constitution first writes project-level principles (technology stack, coding specifications, forbidden zones), then is bound by it at every step.

/speckit.specify describes the function to be done in natural language; immediately after writing/speckit.clarify, it will proactively ask you questions to disambiguate, this step is most worth your time.

Next,/speckit.plan defines the technical scheme,/speckit.tasks breaks down the task list with dependencies,/speckit.analyze does a consistency check, and finally/speckit.implement lets the agent implement and test itself one by one according to the task list.

After the implementation is completed, the specifications in the specs catalog will be checked and accepted one by one. The specifications are the acceptance criteria, do not rely on feelings.

When the requirements change, go back to/speckit.specify to modify the specifications and rerun the subsequent commands to keep the document and code in sync.

Submitting the .specify directory to git for team collaboration, specification review and code review become a fixed process, which is the real value of Spec Kit.

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