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Slash Command

Test

Manual UI testing with Chrome browser - explore your app while errors are

Type
Slash Command
GitHub stars
2.8k
License
MIT
Repo last updated
Sep 27, 2026

What Test is

Test is a slash command published in the jeremylongshore/tons-of-skills-marketplace repository on GitHub, which has about 2.8k stars. The repository describes itself as: “Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com.”

A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.

Test gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.

How to install Test

Claude Code

  1. Download test.md from the repository.
  2. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
  3. Run it by typing / followed by its name, with arguments such as [url].

Claude Cowork

  1. Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
  2. In Customize → Skills, click +, then upload the ZIP.
  3. Run it from any task with / and the skill name.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/community/sprint/commands/test.md, shared under the repository's MIT license. Read the full file on GitHub.

You are launching a manual UI testing session using Chrome browser.

This is a standalone command - it does NOT run the full sprint workflow. Use this when you want to:

  • Quickly explore your app in a real browser
  • Manually test features while console errors are captured
  • Debug UI issues interactively
  • Feed observations into the next sprint (reports are saved to the sprint folder)

Workflow

Step 0: Locate Sprint Directory

Find the current sprint directory:

ls -d .claude/sprint/*/ 2>/dev/null | sort -V | tail -1

If no sprint exists, create the first one:

mkdir -p .claude/sprint/1

Store the sprint directory path (e.g., .claude/sprint/1/) for saving the report later.

Step 1: Determine Frontend URL

Check for URL in this order:

  1. Command argument (e.g., /sprint:test http://localhost:8080)
  2. .claude/project-map.md - look for frontend URL
  3. Default: http://localhost:3000

Step 2: Initialize Chrome Browser

Call: mcp__claude-in-chrome__tabs_context_mcp

Get the current tab context. Then create a new tab:

Call: mcp__claude-in-chrome__tabs_create_mcp

Store the tabId for subsequent calls.

Step 3: Navigate to App

Call: mcp__claude-in-chrome__navigate
- url: [frontend URL]
- tabId: [tabId]

Step 4: Take Initial Screenshot

Confirm the app loaded correctly:

Call: mcp__claude-in-chrome__computer
- action: "screenshot"
- tabId: [tabId]

Report to user:

Browser opened at [URL]

You can now interact with the app manually.
I'm monitoring for console errors in the background.

When you're done testing, say "done" or "finish testing".

Step 5: Monitor for Errors

While the user tests, periodically check for console errors:

Call: mcp__claude-in-chrome__read_console_messages
- tabId: [tabId]
- pattern: "error|Error|ERROR|exception|Exception"

If errors are found, briefly note them but don't interrupt the user's flow.

Step 6: Wait for User to Finish

The user will indicate they're done testing by saying something like:

  • "done"
  • "finish"
  • "stop testing"
  • "I'm done"

Step 7: Capture Final State

When the user signals completion:

  1. Take final screenshot:
Call: mcp__claude-in-chrome__computer
- action: "screenshot"
- tabId: [tabId]
  1. Get all console messages:
Call: mcp__claude-in-chrome__read_console_messages
- tabId: [tabId]
  1. Optionally get network requests if relevant:
Call: mcp__claude-in-chrome__read_network_requests
- tabId: [tabId]

Step 8: Generate and Save Report

Generate a report with this structure:

## MANUAL TEST REPORT

### Session Info
- URL: [frontend URL]
- Date: [timestamp]
- Duration: [approximate time]

### Console Errors
[List any JS errors captured, or "None detected"]

### Network Issues
[Any failed requests, or "None detected"]

### User Observations
[Space for any notes the user mentioned during testing]

### Issues Found
[Summarize any problems discovered, or "None"]
…

Save the report to the sprint directory:

Write the report to: .claude/sprint/[N]/manual-test-report.md

If a previous manual-test-report.md exists, append a timestamp suffix:

  • .claude/sprint/[N]/manual-test-report-[timestamp].md

Inform the user:

Report saved to .claude/sprint/[N]/manual-test-report.md

This report will be picked up when you run /sprint
The architect will use it to understand what needs to be fixed.

Error Handling

If the browser fails to open or navigate:

  • Report the error to the user
  • Suggest checking if the app is running
  • Provide the URL that was attempted

Notes

  • This command uses Chrome browser MCP (mcpclaude-in-chrome*)
  • The browser tab stays open for the user to interact with
  • Console errors are captured automatically
  • Reports are saved to the sprint folder for the architect to use
  • No sprint workflow, no architect, no agents - just direct browser testing

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Test?

Test is a slash command for Claude Code and Claude Cowork from the jeremylongshore/tons-of-skills-marketplace repository on GitHub. Manual UI testing with Chrome browser - explore your app while errors are

How do I install Test in Claude Code?

Download test.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name, with arguments such as [url].

Can I use Test in Claude Cowork?

Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.

Is Test safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.