auto-tester

auto-tester is a skill for Claude Code, Codex from Stijnman/grok-custom-skills. It costs 32 tokens per session (337 once invoked), scanned A, original, MIT.

An automated checker that runs the appropriate tests or basic validation after changes to code, skills, or other outputs. It detects whether results pass, fail, or appear flaky, meaning they fail inconsistently.

In plain words
What is it for?
Use it to run Python or Node test suites, validate skill changes, perform smoke checks, classify failures, and report hints for fixing failed checks.
Why use it?
It reduces the chance of declaring work finished without checking it. When no test suite exists, it uses basic checks such as imports, linting, or a dry run.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to run Python or Node test suites, validate skill changes, perform smoke checks, classify failures, and report hints for fixing failed checks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/stijnman/grok-custom-skills/auto-tester
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 Stijnman/grok-custom-skills --skill auto-tester
Clone the repo
git clone --depth 1 https://github.com/Stijnman/grok-custom-skills

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 auto-tester

README.md
[![agentmods](https://agentmods.dev/badge/skills/stijnman/grok-custom-skills/auto-tester/github.svg)](https://agentmods.dev/skills/stijnman/grok-custom-skills/auto-tester)
Your own site
<a href="https://agentmods.dev/skills/stijnman/grok-custom-skills/auto-tester"><img src="https://agentmods.dev/badge/skills/stijnman/grok-custom-skills/auto-tester/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 auto-tester

Your own site · 80×15
<a href="https://agentmods.dev/skills/stijnman/grok-custom-skills/auto-tester"><img src="https://agentmods.dev/badge/skills/stijnman/grok-custom-skills/auto-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 32 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 337 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 $0.00032 $0.00337
Opus 5 $0.00016 $0.00169
Sonnet 5 $0.00006 $0.00067
Haiku 4.5 $0.00003 $0.00034

Measured 11d ago against content hash b0a74f6ce4f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

auto-tester 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 11d 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.

.grok/skills/auto-tester/SKILL.md · 48 lines

What it actually says

Auto Tester

When to Use

  • User says run tests or task matches this capability
  • User says auto test or task matches this capability
  • User says validate changes or task matches this capability
  • User says check tests or task matches this capability

Workflow

  1. Detect project type (Python, Node, skill-only).
  2. Run appropriate test command (pytest, npm test, or skill checklist).
  3. Parse results; classify pass/fail/flaky.
  4. On fail: invoke self-healing-error-recovery or report with fix hints.

Integrations

  • goal-verifier
  • self-healing-error-recovery
  • hyper-skill-tester

Error Handling

Failure Response
No test suite Run smoke checks: import, lint, dry-run.

Gotchas

  • Never skip tests before marking goal-verifier complete.

Example

Input: User request matching triggers above. Output: Structured result per workflow with integrations invoked as needed.

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. 11d ago First seen · 48 lines · 32 tokens per session scan A b0a74f6ce4f7

Subscribe to this mod's changes

auto-tester is a skill published in the GitHub repository Stijnman/grok-custom-skills (9 stars, last pushed today), licensed MIT. It adds 32 tokens to every session and 337 once invoked, about $0.0002 per session on Opus 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 2026-08-31.

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