TDD Guard grew into Probity: the same TDD enforcement, now for Claude Code, Codex, and GitHub Copilot CLI, with more reliable validation and no test reporters to set up. New projects should start there.
> /plugin marketplace add nizos/tdd-guard> /plugin install tdd-guard@tdd-guard
Repo: nizos/tdd-guard
What's inside
[!IMPORTANT] TDD Guard grew into Probity: the same TDD enforcement, now for Claude Code, Codex, and GitHub Copilot CLI, with more reliable validation and no test reporters to set up. New projects should start there. TDD Guard remains maintained for the projects that rely on it.
Automated Test-Driven Development enforcement for Claude Code.
TDD Guard ensures Claude Code follows Test-Driven Development principles. When your agent tries to skip tests or over-implement, TDD Guard blocks the action and explains what needs to happen instead.
Open Claude Code in your project and run:
/plugin marketplace add nizos/tdd-guard/plugin install tdd-guard@tdd-guard/tdd-guard:setupThis adds the marketplace, installs the plugin, and configures the test reporter for your project. You may need to restart your terminal session or IDE extension for the setup skill to appear. For manual installation and configuration, see the installation guide.
TDD Guard hooks run with your user permissions. We maintain automated security scanning, dependency audits, and welcome source code review. See Claude Code's security considerations for more on hook safety.
Contributions are welcome! See the contributing guidelines to get started.
Contributors:
View @nizos’s profileProbity forces AI coding agents to follow your rules. It hooks into your agent and checks every file write and shell command before it happens. When an action breaks a rule, Probity blocks it and tells the agent why.
@nizosFAQ
tdd-guard is a Claude Code plugin with 1 hand-picked skill for testing work, indexed on Flowy. Install it with the command on its page. It includes setup. Its skills do not fire on their own yet. Request auto-invocation to have Flowy route them as you prompt. Free and open source.
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