exploratory-test

exploratory-test is a skill for Claude Code, Codex from tobihagemann/turbo. It costs 106 tokens per session (1,811 once invoked), scanned A, original, MIT.

A structured exploratory-testing procedure that checks an app through increasingly difficult and unusual scenarios. Exploratory testing means actively looking for unexpected failures, not only running predefined checks.

In plain words
What is it for?
Use it to test core functions, complex workflows, adversarial cases, and interactions across the app. It also records usability observations separately from defects.
Why use it?
It helps uncover bugs that basic tests may miss, including problems caused by complex operations, invalid input, or interactions between features.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: names the AskUserQuestion tool.

Good fit Use it to test core functions, complex workflows, adversarial cases, and interactions across the app. It also records usability observations separately from defects.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tobihagemann/turbo/exploratory-test
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add tobihagemann/turbo --skill exploratory-test
Clone the repo
git clone --depth 1 https://github.com/tobihagemann/turbo

Made for: Claude Code, Codex.

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 exploratory-test

README.md
[![agentmods](https://agentmods.dev/badge/skills/tobihagemann/turbo/exploratory-test/github.svg)](https://agentmods.dev/skills/tobihagemann/turbo/exploratory-test)
Your own site
<a href="https://agentmods.dev/skills/tobihagemann/turbo/exploratory-test"><img src="https://agentmods.dev/badge/skills/tobihagemann/turbo/exploratory-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 exploratory-test

Your own site · 80×15
<a href="https://agentmods.dev/skills/tobihagemann/turbo/exploratory-test"><img src="https://agentmods.dev/badge/skills/tobihagemann/turbo/exploratory-test.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 106 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,811 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Rogue Agent · line 12
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
How audits are shown
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 $0.00106 $0.01811
Opus 5.5 $0.00042 $0.00724
Sonnet 5.5 $0.00021 $0.00362
Haiku 4.5 $0.00011 $0.00181

Measured 26d ago against content hash 200f68a0a4e8, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

exploratory-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 26d 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/skills/exploratory-test/SKILL.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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:

  1. Load or create test plan
  2. Determine testing approach
  3. Run /user-experience skill (when user-facing)
  4. Run /test-run-rules skill
  5. Execute tests by level
  6. Report

Step 1: Load or Create Test Plan

Resolve the test plan using these rules in order:

  1. Explicit path — If a file path was passed, use it
  2. Explicit slug — resolve to .turbo/test-plans/<slug>.md
  3. Anchoring artifact — If the work under test is anchored to a plan, resolve to .turbo/test-plans/<that-slug>.md when that file exists
  4. Single file — Glob .turbo/test-plans/*.md. If exactly one file exists, use it
  5. Most recent — If multiple files exist, use the most recently modified
  6. Legacy fallback — .turbo/test-plan.md if .turbo/test-plans/ does not exist
  7. 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.

Unless an explicit path or slug was passed, confirm the resolved plan still describes the work under test:

  • Unavailable branch state — a scenario's steps require a branch that no longer resolves in the repository
  • Completed prior run — every checkbox is already ticked and no recorded result is FAIL or PARTIAL
  • Superseded context — the plan's Context section names work that changes merged since the plan was written have reversed or removed

When a signal fires, output the signal and the scenarios it affects as text. For a superseded Context, name the scenarios that exercise the reversed or removed work. Then use AskUserQuestion to offer:

  • Regenerate — run the /create-test-plan skill with the resolved path, and use the plan it writes
  • Execute anyway — the signal is a false positive
  • Pick another plan — resolve to a different test plan file, then confirm that plan against these same signals

Read the full file on GitHub · 149 lines

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. 26d ago Changed · -13 lines 200f68a0a4e8
  2. 29d ago Changed · +8 lines 4cfb4e9370f3
  3. 1mo ago Changed · +4 lines 6e405b991eb4
  4. 1mo ago First seen · 150 lines · 106 tokens per session scan A 75d00454551b

Subscribe to this mod's changes

exploratory-test is a skill published in the GitHub repository tobihagemann/turbo (417 stars, last pushed yesterday), licensed MIT. It adds 106 tokens to every session and 1,811 once invoked, about $0.0004 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.

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