game-theory

game-theory is a skill for Claude Code from James-Traina/compound-science. It costs 197 tokens per session (3,250 once invoked), scanned A, original, MIT.

A guide to analysing situations where people or firms make strategic decisions that affect one another. In economics, this includes models of competition, auctions, bargaining, market entry, and matching.

In plain words
What is it for?
Use it when building or estimating strategic economic models, computing Nash or other equilibria, studying firm conduct, or analysing auctions, entry, matching, and bargaining.
Why use it?
It helps address equilibrium calculations, multiple possible outcomes, and the difficulty of determining what economic data can reveal about strategic behaviour.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the compound-science plugin — 20 skills shipped together

Good fit Use it when building or estimating strategic economic models, computing Nash or other equilibria, studying firm conduct, or analysing auctions, entry, matching, and bargaining.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/james-traina/compound-science/game-theory
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 James-Traina/compound-science --skill game-theory
Clone the repo
git clone --depth 1 https://github.com/James-Traina/compound-science

Made for: Claude Code.

Or install compound-science, the plugin that ships this one along with the rest of its 20 skills.

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 game-theory

README.md
[![agentmods](https://agentmods.dev/badge/skills/james-traina/compound-science/game-theory.svg)](https://agentmods.dev/skills/james-traina/compound-science/game-theory)
Your own site
<a href="https://agentmods.dev/skills/james-traina/compound-science/game-theory"><img src="https://agentmods.dev/badge/skills/james-traina/compound-science/game-theory.svg" alt="Measured on agentmods" height="20"></a>
Per session 197 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,250 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 $0.00197 $0.03250
Opus 5 $0.00098 $0.01625
Sonnet 5 $0.00039 $0.00650
Haiku 4.5 $0.00020 $0.00325

Measured 7d ago against content hash b83db506f0ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

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 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.

skills/game-theory/SKILL.md · 195 lines

How it starts

The opening of the file, as written. The whole thing — 195 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Game Theory

Reference for game-theoretic methods in applied structural econometrics and industrial organization. Covers equilibrium concepts, computational methods, structural IO applications, and the identification challenges unique to game-theoretic models.

When to Use This Skill

Use when the user is:

  • Estimating a structural model where agents interact strategically (oligopoly, entry, bargaining, auctions)
  • Deriving or computing Nash equilibria, BNE, or subgame perfect equilibria
  • Handling the multiple equilibria problem in empirical games
  • Testing firm conduct (competitive vs. collusive vs. oligopolistic)
  • Estimating entry models, matching models, or bargaining models
  • Formalizing an identification argument for a game-theoretic model

Skip when:

  • The model is single-agent (use structural-modeling skill for dynamic discrete choice, demand estimation)
  • The task is standard causal inference without strategic interaction (use causal-inference skill)
  • The game is a well-known IO model with standard estimation code (pyblp covers BLP demand; see structural-modeling)

Quick reference only — for full implementation code, see references/ subdirectory.

Where to Start

  • Choosing equilibrium concept? See Equilibrium Concept Routing below, then references/equilibrium-concepts.md for definitions and formulas
  • Computing equilibria? See references/equilibrium-computation.md
  • Estimating an IO model? See references/io-applications.md
  • Estimation code and diagnostics? See references/estimation-diagnostics.md
  • Facing multiple equilibria? See Multiple Equilibria Summary below, then references/multiple-equilibria.md for selection rules and set identification
  • Identification argument? See Identification Summary below, then references/identification-in-games.md for exclusion restrictions and rank conditions

Quick Start: Nash Equilibrium Computation

Read the full file on GitHub · 195 lines

Files

What ships with it

6 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.

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. 7d ago First seen · 195 lines · 197 tokens per session scan A b83db506f0ce

Subscribe to this mod's changes

game-theory is a skill published in the GitHub repository James-Traina/compound-science (13 stars, last pushed 5mo ago), licensed MIT. It adds 197 tokens to every session and 3,250 once invoked, about $0.0010 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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