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-economics-coordinationgit 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-economics-coordination)<a href="https://agentmods.dev/skills/human-avatar/skills-for-humanity/s4h-economics-coordination"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-economics-coordination/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-economics-coordination"><img src="https://agentmods.dev/badge/skills/human-avatar/skills-for-humanity/s4h-economics-coordination.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 | $0.00099 | $0.02110 |
| Opus 5 | $0.00049 | $0.01055 |
| Sonnet 5 | $0.00020 | $0.00422 |
| Haiku 4.5 | $0.00010 | $0.00211 |
Grade A, and why
s4h-economics-coordination 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 13d 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 — 125 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Economics: Coordination Failure
Elinor Ostrom won the 2009 Nobel Prize for demonstrating what policymakers and economists had missed for decades: the tragedy of the commons is not inevitable. Communities have developed institutions — rules, monitoring, graduated sanctions, conflict resolution mechanisms — that manage shared resources sustainably without either privatisation or government control. But to solve the problem, you first have to diagnose it correctly.
The tragedy of the commons, formalised by Garrett Hardin in 1968, is a special case of a broader phenomenon: coordination failure. The general structure is this — when the benefits of an action are diffuse (shared by many) and the costs are borne by the individual, rational actors will undercontribute to the collective good. When the benefits of a bad action are private and the costs are shared, rational actors will overuse the commons. Individually rational. Collectively catastrophic.
This manifests in four overlapping problem types:
- Public goods problems: non-excludable, non-rival goods (clean air, public safety, open-source software) are underproduced because producers cannot capture the benefit — free riders consume without contributing.
- Common pool resource problems: depletable shared resources (fisheries, groundwater, shared codebases) are overused because the individual captures the full benefit of taking but shares the cost of depletion with everyone.
- Assurance games: everyone would prefer to cooperate, but only if enough others do too. If you're not sure others will cooperate, defecting is rational — and this suspicion can make cooperation collapse even when everyone prefers it.
- Coordination games: multiple equilibria exist and parties need to agree on which one to use, but have no mechanism to communicate and commit.
Ostrom's institutional analysis provides the solution toolkit. The goal of this skill is to correctly identify which problem type is present — they have different structures and require different solutions.
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.
- 13d ago First seen · 125 lines · 99 tokens per session scan A 9f57dbaf8e3f
s4h-economics-coordination is a skill published in the GitHub repository human-avatar/skills-for-humanity (223 stars, last pushed 1mo ago), licensed MIT. It adds 99 tokens to every session and 2,110 once invoked, about $0.0005 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 2026-08-30.
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