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.
npx skills add jeremylongworth-source/AgentSkills --skill game-playtesting-usabilitygit clone --depth 1 https://github.com/jeremylongworth-source/AgentSkillsWrote 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.
[](https://agentmods.dev/skills/jeremylongworth-source/agentskills/game-playtesting-usability)<a href="https://agentmods.dev/skills/jeremylongworth-source/agentskills/game-playtesting-usability"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/game-playtesting-usability/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.
<a href="https://agentmods.dev/skills/jeremylongworth-source/agentskills/game-playtesting-usability"><img src="https://agentmods.dev/badge/skills/jeremylongworth-source/agentskills/game-playtesting-usability.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00076 | $0.00408 |
| Opus 5 | $0.00038 | $0.00204 |
| Sonnet 5 | $0.00015 | $0.00082 |
| Haiku 4.5 | $0.00008 | $0.00041 |
Grade A, and why
game-playtesting-usability 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 7d 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.
What it actually says
Game Playtesting Usability
Core Workflow
- Define the design question: comprehension, controls, difficulty, fun, pacing, balance, retention, onboarding, UI clarity, accessibility, or market appeal.
- Select playtest type: internal smoke test, moderated usability test, unmoderated remote playtest, telemetry test, balance test, first-time-user test, longitudinal test, or public demo feedback.
- Recruit players that match the target audience and note bias.
- Create tasks, observation prompts, success criteria, and data capture before testing.
- Observe behavior before asking opinions. Record confusion, hesitation, repeated failure, emotion, workaround, and drop-off.
- Synthesize issues by severity, frequency, player segment, root cause, and design implication.
- Convert findings into concrete design changes and retest criteria.
Playtest Principles
- Do not coach unless the test explicitly allows help.
- Separate bugs, usability problems, balance problems, and preference feedback.
- Watch what players do, not only what they say.
- Test early prototypes for comprehension and later builds for tuning, retention, and polish.
- Treat small samples as directional; use telemetry or larger samples for stronger claims.
Deliverable Shape
For playtesting work, provide:
- Research question and build/context
- Participant criteria
- Test plan and tasks
- Data capture plan
- Findings by severity and evidence
- Recommended changes
- Retest plan
References
- Read
references/game-playtesting-checklist.mdwhen planning, running, or synthesizing game playtests.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 7d ago First seen · 42 lines · 76 tokens per session scan A fe9641b943bf
game-playtesting-usability is a skill published in the GitHub repository jeremylongworth-source/AgentSkills (1 stars, last pushed 8d ago), licensed MIT. It adds 76 tokens to every session and 408 once invoked, about $0.0004 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 2026-09-03.
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