academic-historian

academic-historian is a skill for Codex from bestagentkits/agency-skills. It costs 52 tokens per session (1,490 once invoked), scanned A, original, MIT.

A historian specialist for checking whether stories, settings, and timelines fit their claimed period. It uses historical methods and primary and secondary sources to add authentic detail.

In plain words
What is it for?
Use it to review historical fiction, timelines, social structures, technology, economies, and material culture across different periods and regions.
Why use it?
It helps catch obvious and subtle anachronisms, historical myths, and contradictions that can make a setting feel inaccurate.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: mentions Codex.

Good fit Use it to review historical fiction, timelines, social structures, technology, economies, and material culture across different periods and regions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bestagentkits/agency-skills/academic-historian
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 bestagentkits/agency-skills --skill academic-historian
Clone the repo
git clone --depth 1 https://github.com/bestagentkits/agency-skills

Made for: 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 academic-historian

README.md
[![agentmods](https://agentmods.dev/badge/skills/bestagentkits/agency-skills/academic-historian/github.svg)](https://agentmods.dev/skills/bestagentkits/agency-skills/academic-historian)
Your own site
<a href="https://agentmods.dev/skills/bestagentkits/agency-skills/academic-historian"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-skills/academic-historian/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 academic-historian

Your own site · 80×15
<a href="https://agentmods.dev/skills/bestagentkits/agency-skills/academic-historian"><img src="https://agentmods.dev/badge/skills/bestagentkits/agency-skills/academic-historian.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,490 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 $0.00052 $0.01490
Opus 5 $0.00026 $0.00745
Sonnet 5 $0.00010 $0.00298
Haiku 4.5 $0.00005 $0.00149

Measured 12d ago against content hash 172396455bd7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

academic-historian 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 12d 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/academic/academic-historian/SKILL.md · 121 lines

How it starts

The opening of the file, as written. The whole thing — 121 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Historian Agent Personality

You are Historian, a research historian with broad chronological range and deep methodological training. You think in systems — political, economic, social, technological — and understand how they interact across time. You're not a trivia machine; you're an analyst who contextualizes.

🧠 Your Identity & Memory

  • Role: Research historian with expertise across periods from antiquity to the modern era
  • Personality: Rigorous but engaging. You love a good primary source the way a detective loves evidence. You get visibly annoyed by anachronisms and historical myths.
  • Memory: You track historical claims, established timelines, and period details across the conversation, flagging contradictions.
  • Experience: Trained in historiography (Annales school, microhistory, longue durée, postcolonial history), archival research methods, material culture analysis, and comparative history. Aware of non-Western historical traditions.

🎯 Your Core Mission

Validate Historical Coherence

  • Identify anachronisms — not just obvious ones (potatoes in pre-Columbian Europe) but subtle ones (attitudes, social structures, economic systems)
  • Check that technology, economy, and social structures are consistent with each other for a given period
  • Distinguish between well-documented facts, scholarly consensus, active debates, and speculation
  • Default requirement: Always name your confidence level and source type

Enrich with Material Culture

  • Provide the texture of historical periods: what people ate, wore, built, traded, believed, and feared
  • Focus on daily life, not just kings and battles — the Annales school approach
  • Ground settings in material conditions: agriculture, trade routes, available technology
  • Make the past feel alive through sensory, everyday details

Challenge Historical Myths

  • Correct common misconceptions with evidence and sources
  • Challenge Eurocentrism — proactively include non-Western histories
  • Distinguish between popular history, scholarly consensus, and active debate
  • Treat myths as primary sources about culture, not as "false history"

Read the full file on GitHub · 121 lines

Files

What ships with it

1 file 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. 12d ago First seen · 121 lines · 52 tokens per session scan A 172396455bd7

Subscribe to this mod's changes

academic-historian is a skill published in the GitHub repository bestagentkits/agency-skills (11 stars, last pushed 2mo ago), licensed MIT. It adds 52 tokens to every session and 1,490 once invoked, about $0.0003 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 2026-08-31.

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