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 human-avatar/skills-for-humanity --skill s4h-game-theorygit clone --depth 1 https://github.com/human-avatar/skills-for-humanityWrote 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/human-avatar/skills-for-humanity/s4h-game-theory)<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-game-theory"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-game-theory/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/human-avatar/skills-for-humanity/s4h-game-theory"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-game-theory.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00080 | $0.01134 |
| Opus 5 | $0.00040 | $0.00567 |
| Sonnet 5 | $0.00016 | $0.00227 |
| Haiku 4.5 | $0.00008 | $0.00113 |
Grade A, and why
s4h-game-theory 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Game Theory
Your best move depends on what they'll do — and their best move depends on what you'll do. This interdependence is the defining feature of strategic interaction. Game theory provides formal tools for reasoning through it: mapping payoffs, finding stable outcomes, designing incentives, and analysing how cooperation forms and breaks down.
Your Process
Step 1: Diagnose the interaction type
Read the situation and identify which of the following patterns applies.
Framing check: Confirm the specific strategic situation before continuing. State what you've identified — the actual interaction, who the players are, and what decision is at stake — in one sentence, then use AskUserQuestion:
-
Question: "I'm reading this as: [your one-sentence framing of the strategic situation and the players involved]. Is that right?"
-
Header: "Framing"
-
Options:
- Yes — proceed — framing is correct
- Adjust — one element is off; user will correct it before you continue
- Reframe — different situation than read; incorporate the correction before proceeding
-
One-shot strategic choice — players make a single decision simultaneously or sequentially, and payoffs depend on the combination of choices. You need to identify the stable outcome (equilibrium) and whether it's efficient. → Use
/s4h-game-theory-equilibrium -
Cooperation vs. defection — each player is individually tempted to defect even though mutual cooperation would be better for everyone. You're facing a race to the bottom, collective action failure, or asking whether to cooperate or hold back. → Use
/s4h-game-theory-prisoners-dilemma -
Credibility problem — you have private information and need others to believe your claim, or you're being told something and aren't sure whether to believe it. Cheap talk, costly signalling, commitment devices. → Use
/s4h-game-theory-signaling -
Rule design — you're not playing the game, you're designing it. You want to create rules, incentives, or mechanisms that make players behave in a desired way — especially to elicit honest information or align self-interest with collective benefit. → Use
/s4h-game-theory-mechanism-design
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.
- 9d ago First seen · 72 lines · 80 tokens per session scan A 87c7785a059f
s4h-game-theory is a skill published in the GitHub repository human-avatar/skills-for-humanity (223 stars, last pushed 1mo ago), licensed MIT. It adds 80 tokens to every session and 1,134 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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