gm-combat

gm-combat is a skill for Claude Code, Codex from Sstobo/Claude-Code-Game-Master. It costs 74 tokens per session (836 once invoked), scanned A, original, no licence file.

A combat-rules aid for Dungeons & Dragons 5th Edition, a tabletop role-playing game. It handles turn order, attacks, damage, combat modifiers, experience awards, and death-saving rolls.

In plain words
What is it for?
Starting combat, managing initiative, resolving attacks and damage, applying modifiers, awarding experience, and handling death saves.
Why use it?
It helps resolve fights consistently by keeping track of the rules and combat state. It also distinguishes D&D rules from other game systems.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/sstobo/claude-code-game-master/gm-combat
Any agent
npx skills add Sstobo/Claude-Code-Game-Master --skill gm-combat
Clone the repo
git clone --depth 1 https://github.com/Sstobo/Claude-Code-Game-Master

Made for: Claude Code, 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 gm-combat

README.md
[![agentmods](https://agentmods.dev/badge/skills/sstobo/claude-code-game-master/gm-combat.svg)](https://agentmods.dev/skills/sstobo/claude-code-game-master/gm-combat)
Your own site
<a href="https://agentmods.dev/skills/sstobo/claude-code-game-master/gm-combat"><img src="https://agentmods.dev/badge/skills/sstobo/claude-code-game-master/gm-combat.svg" alt="Measured on agentmods" height="20"></a>
Per session 74 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 836 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00074 $0.00836
Opus 5 $0.00037 $0.00418
Sonnet 5 $0.00015 $0.00167
Haiku 4.5 $0.00007 $0.00084

Measured 6d ago against content hash 6937a8b4722b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

gm-combat 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 6d 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/skills/gm-combat/SKILL.md · 39 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 6d ago First seen · 39 lines · 74 tokens per session scan A 6937a8b4722b

Subscribe to this mod's changes

gm-combat is a skill published in the GitHub repository Sstobo/Claude-Code-Game-Master (148 stars, last pushed 19d ago), with no licence file. It adds 74 tokens to every session and 836 once invoked, about $0.0004 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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