An orchestrator for a structured AI game-design process covering brainstorming, system design, playtesting, finalization, and handoff. It maintains a project spine: a live charter and manifest describing the game's concept, systems, dependencies, and shared rules.

Use it to start a game project, choose or advance its design phase, review the whole development pipeline, and maintain the project charter and system manifest.

It gives the project one continuously updated source of truth as the design changes. This helps coordinate separate game systems and keeps their shared specifications consistent.

aigd — Skill for Claude Code and Codex by ProdaZhang

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 ProdaZhang/aigd --skill aigd

Clone the repo

git clone --depth 1 https://github.com/ProdaZhang/aigd

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/prodazhang/aigd/aigd/github.svg)](https://agentmods.dev/skills/prodazhang/aigd/aigd)

Your own site

<a href="https://agentmods.dev/skills/prodazhang/aigd/aigd"><img src="https://agentmods.dev/badge/skills/prodazhang/aigd/aigd/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/prodazhang/aigd/aigd"><img src="https://agentmods.dev/badge/skills/prodazhang/aigd/aigd.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 166 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,622 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.

Model	Per session	Once invoked
Fable 5.1	$0.00166	$0.01622
Opus 5.5	$0.00066	$0.00649
Sonnet 5.5	$0.00033	$0.00324
Haiku 4.5	$0.00017	$0.00162

Measured 1mo ago against content hash 1497d1b7c97a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aigd 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 1mo ago.

The scan reads SKILL.md. This mod also ships 20 executable files (references/scripts/config_check.py, references/scripts/config_index.py, references/scripts/gherkin_to_checklist.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

aigd/SKILL.md · 63 lines

How it starts

The opening of the file, as written. The whole thing — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AIGD · orchestrator

AIGD = AI Game Design. A portable AI game-development methodology package: covering brainstorming → system design → playtest iteration → finalization & handoff, producing a handoff package (platform-agnostic) that "another AI can develop directly from"; landing the implementation (picking a tech stack to write the client/server) is not in this package and is left to a future dedicated landing skill.

Status: v0 (pre-release) — validated end-to-end (real-run demos + the runnable examples/ walkthrough in the repo README). patterns/ is a starter pack that keeps growing (see references/README.md).

Core model (details defer to references/)

Two layers: ① the live project layer (spine) — project charter (concept / platform / target users / genre / style / naming conventions) + manifest (system list + dependency graph + cross-layer index + freeze ledger + number-range registry), continuously revised; ② the per-system production loop.
Centralized source of truth: enums / numbering / interface contracts / config tables belong to the project layer; dual copies (system + global): acceptance / resource needs / prototype; system-layer only: rules / backend algorithms.
Every operation: read the spine → do the work → write back to the spine. Lower-layer discoveries (new system / new dependency / new enum / changed concept) write back up to the upper layer.
Methodology source of truth: references/methodology.md, references/README.md.

Routing: dispatch a sub-skill by "what you want to do this time"

What you want to do	Sub-skill
Concept / core loop / platform / target users / split into systems	aigd-concept
Design a system (rules + config test data + html prototype)	aigd-system
Optimize a system after playtest (rules/config/prototype, repeatable)	aigd-iterate
Finalize a system → contract / acceptance / client-server docs / designer-facing acceptance checklist	aigd-handoff
Sync back the global spec / overall prototype / implementation master guide; mark recheck on shared-item changes	aigd-sync
UI screenshot → UI DSL (build up the patterns UI-paradigm knowledge base, for design-time retrieval & reference)	aigd-ui-capture

Read the full file on GitHub · 63 lines

Files

What ships with it

48 files 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.

1mo ago First seen · 63 lines · 166 tokens per session scan A 1497d1b7c97a

Subscribe to this mod's changes

aigd is a skill published in the GitHub repository ProdaZhang/aigd (2 stars, last pushed 3mo ago), licensed MIT. It adds 166 tokens to every session and 1,622 once invoked, about $0.0007 per session on Opus 5.5. 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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