wargame-cartographer: Instructions file for Claude Code

CLAUDE.md

wargame-cartographer CLAUDE.md is an instructions file for Claude Code from fredzannarbor/wargame-cartographer. It costs 1,570 tokens per session, scanned A, original, MIT.

A set of project instructions for Wargame Cartographer, a tool that creates historically accurate, playable hex-grid maps from geographic data.

In plain words
What is it for?
Use it when developing, configuring, validating, or extending the Wargame Cartographer map generator.
Why use it?
It explains the project's architecture, workflow, setup commands, and YAML configuration format so development stays consistent.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is fredzannarbor/wargame-cartographer's own configuration. It tells Claude Code how to work on wargame-cartographer itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything wargame-cartographer configures →

Reuse

Borrowing it

Nothing to install: this file belongs to fredzannarbor/wargame-cartographer. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/fredzannarbor/wargame-cartographer/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/fredzannarbor/wargame-cartographer

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 wargame-cartographer CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/fredzannarbor/wargame-cartographer/claude-md/github.svg)](https://agentmods.dev/instructions/fredzannarbor/wargame-cartographer/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/fredzannarbor/wargame-cartographer/claude-md"><img src="https://agentmods.dev/badge/instructions/fredzannarbor/wargame-cartographer/claude-md/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 wargame-cartographer CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/fredzannarbor/wargame-cartographer/claude-md"><img src="https://agentmods.dev/badge/instructions/fredzannarbor/wargame-cartographer/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 1,570 This file is loaded in full into every session.
When invoked 1,570 The same file — it is already loaded in full.
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 $0.01570 $0.01570
Opus 5 $0.00785 $0.00785
Sonnet 5 $0.00314 $0.00314
Haiku 4.5 $0.00157 $0.00157

Measured 12d ago against content hash 03a1640ccb71, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

wargame-cartographer CLAUDE.md 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.

CLAUDE.md · 156 lines

How it starts

The opening of the file, as written. The whole thing — 156 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Wargame Cartographer

Generate historically accurate, playable wargame-style hex maps from real geographic data.

Quick Start

uv sync
uv run wargame-map generate configs/examples/normandy_hex.yaml
uv run wargame-map quick --name "Gettysburg" --bbox "-77.30,39.78,-77.20,39.86" --hex-size 1

Architecture

src/wargame_cartographer/
├── cli.py              # Click CLI: generate, quick, styles, validate, terrain-effects
├── pipeline.py         # Orchestrates: spec → data → grid → classify → render → export
├── config/
│   ├── map_spec.py     # Pydantic MapSpec + BoundingBox models
│   └── defaults.py     # Default values
├── geo/
│   ├── elevation.py    # SRTM tile download + hillshade (30-day cache)
│   ├── vector.py       # Natural Earth coastlines/rivers/cities + OSM Overpass
│   ├── downloader.py   # HTTP with caching to ~/.wargame-cartographer/cache/
│   └── projection.py   # UTM auto-projection from bbox center
├── hex/
│   ├── grid.py         # Flat-top hex grid generation in projected CRS
│   ├── sampler.py      # Sample elevation/land-use per hex → terrain type
│   └── geojson.py      # GeoJSON export of hex grid
├── terrain/
│   ├── types.py        # 8 terrain types with movement costs + defense modifiers
│   ├── classifier.py   # Elevation + land-use → terrain classification
│   └── palette.py      # Per-style color palettes
├── rendering/
│   ├── renderer.py     # Layer compositor (matplotlib)
│   ├── terrain_layer.py    # Hex fill colors + patterns (forest hatching, etc.)
│   ├── grid_layer.py       # Hex outlines + numbering
│   ├── elevation_layer.py  # Hillshade overlay
│   ├── vector_layer.py     # Coastlines, rivers, roads
│   ├── label_layer.py      # City/town labels
│   ├── nato_layer.py       # NATO unit symbols (counters)
│   ├── symbol_layer.py     # Map symbols
│   ├── cartouche_layer.py  # Title block / cartouche
│   └── styles.py           # 3 designer style definitions
└── output/
    ├── static_exporter.py    # PNG + PDF (matplotlib savefig)
    ├── html_exporter.py      # Interactive Folium/Leaflet map
    └── game_data_exporter.py # JSON with hex IDs, terrain, movement costs

Read the full file on GitHub · 156 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. 12d ago First seen · 156 lines · 1,570 tokens per session scan A 03a1640ccb71

Subscribe to this mod's changes

wargame-cartographer CLAUDE.md is an instructions file published in the GitHub repository fredzannarbor/wargame-cartographer (2 stars, last pushed 5mo ago), licensed MIT. It adds 1,570 tokens to every session, about $0.0078 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.

Related

Other instructions, from other repositories

spec-kit AGENTS.md

AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.

github/spec-kit · 7,126 tokens

next.js AGENTS.md

AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.

vercel/next.js · 7,296 tokens

codex AGENTS.md

AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.

openai/codex · 5,153 tokens

vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

microsoft/vscode · 6,785 tokens

langchain AGENTS.md

AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.

langchain-ai/langchain · 4,469 tokens

vscode oss-third-party-notices.instructions.md

Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).

microsoft/vscode · 5,001 tokens