test-plan

test-plan is a skill for Claude Code, Codex from matebenyovszky/agentplaybooks. It costs 30 tokens per session (140 once invoked), scanned A, original, MIT.

A short test-plan guide for checking a feature, bug fix, or refactor through normal use, regressions, edge cases, and automated tests.

In plain words
What is it for?
Use it to write a practical checklist: the happy path, nearby existing behavior, important edge cases, and the test file to add or extend.
Why use it?
It helps ensure that changed behavior is checked without claiming tests passed when nobody ran them. It also covers failures such as empty input or denied access when relevant.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Good fit Use it to write a practical checklist: the happy path, nearby existing behavior, important edge cases, and the test file to add or extend.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/matebenyovszky/agentplaybooks/test-plan
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 matebenyovszky/agentplaybooks --skill test-plan
Clone the repo
git clone --depth 1 https://github.com/matebenyovszky/agentplaybooks

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 test-plan

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/matebenyovszky/agentplaybooks/test-plan"><img src="https://agentmods.dev/badge/skills/matebenyovszky/agentplaybooks/test-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 140 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 $0.00030 $0.00140
Opus 5.5 $0.00012 $0.00056
Sonnet 5.5 $0.00006 $0.00028
Haiku 4.5 $0.00003 $0.00014

Measured 21d ago against content hash 1a482688c05b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-plan 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 21d 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.

examples/skills-only-starter/.agents/skills/test-plan/SKILL.md · 17 lines

What it actually says

Test plan

Given the change, list:

  1. Happy path — one command or click path that must work.
  2. Regression — the nearest existing behavior that must still work.
  3. Edge — empty input, error, or permission failure if the change touches those.
  4. Automated — which test file to add or extend. If none fits, say so.

Keep it to a short checklist. Do not claim tests passed unless they were run.

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. 21d ago First seen · 17 lines · 30 tokens per session scan A 1a482688c05b

Subscribe to this mod's changes

test-plan is a skill published in the GitHub repository matebenyovszky/agentplaybooks (9 stars, last pushed 3d ago), licensed MIT. It adds 30 tokens to every session and 140 once invoked, about $0.0001 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 2026-09-27.

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