Exploratory Test Skill for Claude

Exploratory Test

Execute multi-level exploratory testing that goes beyond smoke testing to actively find bugs through escalating test scenarios.

Task Tracking

At the start, use TaskCreate to create a task for each step:

• Load or create test plan
• Determine testing approach
• Run /user-experience skill (when user-facing)
• Execute tests by level
• Report

Step 1: Load or Create Test Plan

Resolve the test plan using these rules in order:

• Explicit path — If the user passed a file path, use it
• Explicit slug — resolve to .turbo/test-plans/<slug>.md
• Anchoring artifact — If the work under test is anchored to a plan, shell, or spec, resolve to .turbo/test-plans/<that-slug>.md when that file exists
• Single file — Glob .turbo/test-plans/*.md. If exactly one file exists, use it
• Most recent — If multiple files exist, use the most recently modified
• Legacy fallback — .turbo/test-plan.md if .turbo/test-plans/ does not exist
• Nothing found — run the /create-test-plan skill first, then use the plan it writes

If multiple test plans exist and the most-recent choice is non-obvious, use AskUserQuestion to let the user pick from the candidates.

Read the resolved test plan and state its path. If the user specifies a narrower scope, filter the plan to relevant scenarios rather than executing all of them.

Step 2: Determine Testing Approach

Use the approach specified in the test plan. If the plan does not specify one, determine it using the same logic as /create-test-plan Step 3.

Step 3: Run /user-experience Skill (When User-Facing)

If the app has a user-facing surface (UI, screens, commands, messages, or any behavior a user sees or does), run the /user-experience skill to load the UX lens before executing tests, so usability concerns surface while interacting with the app. When it is unclear whether the surface is user-facing, use AskUserQuestion to ask rather than skipping silently. Skip this step for test targets with no user-facing behavior (internal library or infrastructure).

Step 4: Execute Tests by Level

Work through each level sequentially. Complete all tests in a level before moving to the next.

Execution Loop (Per Test)

• Set up the preconditions described in the test scenario
• Perform the exact steps
• Capture the result (screenshot, output, or state observation)
• Compare against the expected outcome
• Record PASS or FAIL with details
• When the UX lens is loaded, note any usability observation it surfaces, kept separate from the PASS/FAIL verdict

Level Progression

• Level 1: Basic Functionality — If any Level 1 test fails, report early and use AskUserQuestion to ask whether to continue. Basic failures may indicate the feature is too broken for deeper testing.
• Level 2: Complex Operations — Execute all tests regardless of individual failures.
• Level 3: Adversarial Testing — Execute all tests. Failures here are expected and valuable.
• Level 4: Cross-Cutting Scenarios — Execute all tests.

If a project-specific testing skill or MCP tool was identified in Step 2, use that. The paths below are fallbacks.

Web App Path

Start the dev server if not already running. Wait for it to be ready. If /agent-browser is available, run the /agent-browser skill. Otherwise, use claude-in-chrome MCP to interact with the app.

UI/Native App Path

Launch the app. Use computer-use MCP to interact with the UI.

CLI Path

Run commands directly.

Step 5: Report

Present results organized by level:

Exploratory Test Results:

## Level 1: Basic Functionality (X/Y passed)
- [PASS] Test name: description
- [FAIL] Test name: description — [what went wrong]

## Level 2: Complex Operations (X/Y passed)
- [PASS] Test name: description
- [FAIL] Test name: description — [what went wrong]

## Level 3: Adversarial Testing (X/Y passed)
- [PASS] Test name: description
- [FAIL] Test name: description — [what went wrong]

## Level 4: Cross-Cutting Scenarios (X/Y passed)
- [PASS] Test name: description
- [FAIL] Test name: description — [what went wrong]

Overall: X/Y passed across all levels

Report usability observations from the UX lens below the level results, separately from the PASS/FAIL defects. A scenario can pass every functional check and still surface a usability concern.

## Usability Observations
- [UX] <observation> — names the UX context it touches (Understanding, Bridging, or Flowing) and the goal mismatch or friction it creates

For each failure, include the relevant screenshot, output, or state observation.

Update the resolved test plan file by checking off completed tests and annotating results.

Then use the TaskList tool and proceed to any remaining task.

Rules

• Always clean up: close browser sessions, stop dev servers started by this skill.
• Isolate shared process state so concurrent or subagent runs don't collide: bind dev servers and services to unique ports, scope tmux sessions (tmux -L <name>), and write screenshots and other scratch state to absolute paths under a unique scratch directory outside the repository under test.
• Never modify application code. This skill is read-only verification. Report failures without attempting to fix them.
• If the dev server fails to start, report the error and stop.
• Use the Monitor tool to tail app logs for errors or warnings while running tests, so backend failures surface alongside test observations.
• To diagnose failures, run the /investigate skill on the test report.