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tool-ui: Command for Claude Code

.claude/commands/test.md

test is a command for Claude Code from assistant-ui/tool-ui. It costs 3 tokens per session (146 once invoked), scanned A, original, MIT.

A command that creates unit tests, which check small pieces of code in isolation, for a named target.

In plain words
What is it for?
Use it to generate tests for React components or other code. It follows existing project patterns and uses React Testing Library where appropriate.
Why use it?
It helps cover normal use, unusual inputs, failures, user actions, state changes, and asynchronous behavior instead of testing only the happy path.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

This is assistant-ui/tool-ui's own configuration. It tells Claude Code how to work on tool-ui itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything tool-ui configures →

not rated 779repo 1mo ago A scan 3 tokens original MIT archived
View source ↗ assistant-ui/tool-ui tool-ui.com
Reuse

Borrowing it

Nothing to install: this file belongs to assistant-ui/tool-ui. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/assistant-ui/tool-ui/main/.claude/commands/test.md
Clone the repo
git clone --depth 1 https://github.com/assistant-ui/tool-ui

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for test

README.md
[![agentmods](https://agentmods.dev/badge/commands/assistant-ui/tool-ui/test/github.svg)](https://agentmods.dev/commands/assistant-ui/tool-ui/test)
Your own site
<a href="https://agentmods.dev/commands/assistant-ui/tool-ui/test"><img src="https://agentmods.dev/badge/commands/assistant-ui/tool-ui/test/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for test

Your own site · 80×15
<a href="https://agentmods.dev/commands/assistant-ui/tool-ui/test"><img src="https://agentmods.dev/badge/commands/assistant-ui/tool-ui/test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 3 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 146 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00003 $0.00146
Opus 5.5 $0.00001 $0.00058
Sonnet 5.5 $0.00001 $0.00029
Haiku 4.5 $0.00000 $0.00015

Measured 2mo ago against content hash c90db30e7117, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/test.md · 20 lines

What it actually says

Generate unit tests for $ARGUMENTS covering:

  1. Happy Path - Normal expected behavior
  2. Edge Cases - Boundary conditions, empty states, null/undefined
  3. Error Handling - Failed API calls, invalid inputs, exceptions
  4. User Interactions - Clicks, inputs, form submissions
  5. State Changes - Component state updates, prop changes
  6. Async Behavior - Promises, loading states, race conditions

Use:

  • React Testing Library for components
  • Mock external dependencies
  • Descriptive test names
  • Arrange-Act-Assert pattern
  • Follow existing test patterns in the codebase
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 20 lines · 3 tokens per session scan A c90db30e7117

Subscribe to this mod's changes

test is a command published in the GitHub repository assistant-ui/tool-ui (779 stars, last pushed 1mo ago), licensed MIT. It adds 3 tokens to every session and 146 once invoked, about $0.0000 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

LLMTestingUnit testingaichatcomponentsmcpui
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