create-stories

create-stories is a skill for Claude Code from bullish0x/GameStudio. It costs 65 tokens per session (3,574 once invoked), scanned A, a copy of create-stories, MIT.

A workflow for splitting one game-development epic—a large area of work—into small story files that developers can implement. Each story includes requirements, design decisions, acceptance checks, and test evidence.

In plain words
What is it for?
Use it after creating an epic to produce implementable stories, especially for game systems that already have approved design and architecture.
Why use it?
It makes large work easier to estimate, assign, implement, and verify. Traceable requirements also make it clearer why each story exists and how it should be tested.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: agent in frontmatter; names the AskUserQuestion tool; installed under .agents/ (shared by several agents).

Good fit Use it after creating an epic to produce implementable stories, especially for game systems that already have approved design and architecture.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bullish0x/gamestudio/create-stories
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 bullish0x/GameStudio --skill create-stories
Clone the repo
git clone --depth 1 https://github.com/bullish0x/GameStudio

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 create-stories

README.md
[![agentmods](https://agentmods.dev/badge/skills/bullish0x/gamestudio/create-stories/github.svg)](https://agentmods.dev/skills/bullish0x/gamestudio/create-stories)
Your own site
<a href="https://agentmods.dev/skills/bullish0x/gamestudio/create-stories"><img src="https://agentmods.dev/badge/skills/bullish0x/gamestudio/create-stories/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 create-stories

Your own site · 80×15
<a href="https://agentmods.dev/skills/bullish0x/gamestudio/create-stories"><img src="https://agentmods.dev/badge/skills/bullish0x/gamestudio/create-stories.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 65 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,574 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 95% 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 $0.00065 $0.03574
Opus 5 $0.00032 $0.01787
Sonnet 5 $0.00013 $0.00715
Haiku 4.5 $0.00006 $0.00357

Measured 5d ago against content hash f908e4d0fc29, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

create-stories 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 5d 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

95% identical to create-stories — 5 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/skills/create-stories/SKILL.md · 333 lines

How it starts

The opening of the file, as written. The whole thing — 333 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create Stories

A story is a single implementable behaviour — small enough to complete in one focused session, self-contained, and fully traceable to a GDD requirement and an ADR decision. Stories are what developers pick up. Epics are what architects define.

Run this skill per epic, not per layer. Run it for Foundation epics first, then Core, and so on — matching the dependency order.

Output: production/epics/[epic-slug]/story-NNN-[slug].md files

Previous step: /create-epics [system] Next step after stories exist: /story-readiness [story-path] then /dev-story [story-path]


1. Parse Argument

Extract --review [full|lean|solo] if present and store as the review mode override for this run. If not provided, read production/review-mode.txt (default lean if missing). This resolved mode applies to all gate spawns in this skill — apply the check pattern from .agents/docs/director-gates.md before every gate invocation.

  • /create-stories [epic-slug] — e.g. /create-stories combat
  • /create-stories production/epics/combat/EPIC.md — full path also accepted
  • No argument — ask: "Which epic would you like to break into stories?" Glob production/epics/*/EPIC.md and list available epics with their status.

2. Load Everything for This Epic

Read in full:

  • production/epics/[epic-slug]/EPIC.md — epic overview, governing ADRs, GDD requirements table
  • The epic's GDD (design/gdd/[filename].md) — read all 8 sections, especially Acceptance Criteria, Formulas, and Edge Cases
  • All governing ADRs listed in the epic — read the Decision, Implementation Guidelines, Engine Compatibility, and Engine Notes sections
  • docs/architecture/control-manifest.md — extract rules for this epic's layer; note the Manifest Version date from the header
  • docs/architecture/tr-registry.yaml — load all TR-IDs for this system

ADR existence validation: After reading the governing ADRs list from the epic, confirm each ADR file exists on disk. If any ADR file cannot be found, stop immediately before decomposing any story:

Read the full file on GitHub · 333 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. 5d ago First seen · 333 lines · 65 tokens per session scan A f908e4d0fc29

Subscribe to this mod's changes

create-stories is a skill published in the GitHub repository bullish0x/GameStudio (11 stars, last pushed 2mo ago), licensed MIT. It adds 65 tokens to every session and 3,574 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to create-stories, differing in 5 lines, and is treated as a copy.

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