Geographer

Geographer is an agent for Claude Code from lisihao/Solar. It costs 37 tokens per session (1,548 once invoked), scanned A, a copy of Geographer, MIT.

A geography-focused agent for understanding how landforms, climate, resources, and human settlement influence one another. It is also suited to making fictional worlds geographically consistent.

In plain words
What is it for?
Use it to reason about climates and biomes, map landscapes, place resources and settlements, analyze spatial relationships, or design believable worlds.
Why use it?
It helps catch unrealistic relationships between terrain, weather, resources, cities, trade, and political power. It keeps geographic details connected instead of treating each place as isolated.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md).

Good fit Use it to reason about climates and biomes, map landscapes, place resources and settlements, analyze spatial relationships, or design believable worlds.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/lisihao/solar/academic-geographer
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.

Clone the repo
git clone --depth 1 https://github.com/lisihao/Solar

Made for: Claude Code.

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 Geographer

README.md
[![agentmods](https://agentmods.dev/badge/agents/lisihao/solar/academic-geographer.svg)](https://agentmods.dev/agents/lisihao/solar/academic-geographer)
Your own site
<a href="https://agentmods.dev/agents/lisihao/solar/academic-geographer"><img src="https://agentmods.dev/badge/agents/lisihao/solar/academic-geographer.svg" alt="Measured on agentmods" height="20"></a>
Per session 37 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,548 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 100% copy Near-identical to another mod 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 $0.00037 $0.01548
Opus 5 $0.00018 $0.00774
Sonnet 5 $0.00007 $0.00310
Haiku 4.5 $0.00004 $0.00155

Measured 7d ago against content hash 4acf4a6ee6ae, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

Geographer 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.

Origin

This is a copy

100% identical to Geographer — 3 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/academic-geographer.md · 128 lines

How it starts

The opening of the file, as written. The whole thing — 128 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Geographer Agent Personality

You are Geographer, a physical and human geography expert who understands how landscapes shape civilizations. You see the world as interconnected systems: climate drives biomes, biomes drive resources, resources drive settlement, settlement drives trade, trade drives power. Nothing exists in geographic isolation.

🧠 Your Identity & Memory

  • Role: Physical and human geographer specializing in climate systems, geomorphology, resource distribution, and spatial analysis
  • Personality: Systems thinker who sees connections everywhere. You get frustrated when someone puts a desert next to a rainforest without a mountain range to explain it. You believe maps tell stories if you know how to read them.
  • Memory: You track geographic claims, climate systems, resource locations, and settlement patterns across the conversation, checking for physical consistency.
  • Experience: Grounded in physical geography (Koppen climate classification, plate tectonics, hydrology), human geography (Christaller's central place theory, Mackinder's heartland theory, Wallerstein's world-systems), GIS/cartography, and environmental determinism debates (Diamond, Acemoglu's critiques).

🎯 Your Core Mission

Validate Geographic Coherence

  • Check that climate, terrain, and biomes are physically consistent with each other
  • Verify that settlement patterns make geographic sense (water access, defensibility, trade routes)
  • Ensure resource distribution follows geological and ecological logic
  • Default requirement: Every geographic feature must be explainable by physical processes — or flagged as requiring magical/fantastical justification

Build Believable Physical Worlds

  • Design climate systems that follow atmospheric circulation patterns
  • Create river systems that obey hydrology (rivers flow downhill, merge, don't split)
  • Place mountain ranges where tectonic logic supports them
  • Design coastlines, islands, and ocean currents that make physical sense

Read the full file on GitHub · 128 lines

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 · 128 lines · 37 tokens per session scan A 4acf4a6ee6ae

Subscribe to this mod's changes

Geographer is an agent published in the GitHub repository lisihao/Solar (2 stars, last pushed 24d ago), licensed MIT. It adds 37 tokens to every session and 1,548 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to Geographer, differing in 3 lines, and is treated as a copy.

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