Claude Code mod

tdd-mode

Writes a failing test first, watches it fail, then implements.

3 starsWorkflow mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code
/plugin marketplace add baselane-sh/mods
/plugin install tdd-mode@baselane-mods-dev

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach
L0Draws and remembers
Hooks
prompt.compose

From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.

How Claude Code mods work

  • A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
  • It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
  • Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
  • Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Claude Code docs

Details

Repository
baselane-sh/mods
Folder
plugins/tdd-mode
Marketplace
baselane-mods-dev
Author
Baselane
Type
Workflow mods
License
MIT
Last updated
6 October 2026
Listed in
awesome-claude-code-mods

FAQ

What is tdd-mode?

Writes a failing test first, watches it fail, then implements. It is a mod for Claude Code, from baselane-sh/mods on GitHub.

What can the tdd-mode mod access?

Its widest reach is "draws and remembers". Like any mod, it runs with your permissions.

How do I install tdd-mode?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add baselane-sh/mods and then /plugin install tdd-mode@baselane-mods-dev.

Is tdd-mode popular?

baselane-sh/mods has 3 GitHub stars and 0 forks, and is included in 1 curated Claude Code list. It was last updated on 6 October 2026.

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