aigd-concept

aigd-concept is a skill for Claude Code, Codex from ProdaZhang/aigd. It costs 88 tokens per session (895 once invoked), scanned A, original, MIT.

A game-design planning skill for deciding what a new game is about and how its main systems fit together. It records the concept, core gameplay loop, target platform, intended players, and system dependencies.

In plain words
What is it for?
Use it to shape a new game concept, repair its central gameplay loop, choose its platform and audience, and create the initial system list and dependency graph.
Why use it?
It turns early brainstorming into a shared project plan that can be revised as the idea develops. This helps prevent important systems or relationships from being missed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions Claude Code.

Not installable on its own: it reads a path above its own folder, which only exists inside its repository. The line is **Package contract**: install the whole `aigd` package (the orchestrator `aigd/`+`references/` and the 6 sub-skills (including aigd-ui-capture) placed at the sa.

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

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 aigd-concept

README.md
[![agentmods](https://agentmods.dev/badge/skills/prodazhang/aigd/aigd-concept.svg)](https://agentmods.dev/skills/prodazhang/aigd/aigd-concept)
Your own site
<a href="https://agentmods.dev/skills/prodazhang/aigd/aigd-concept"><img src="https://agentmods.dev/badge/skills/prodazhang/aigd/aigd-concept.svg" alt="Measured on agentmods" height="20"></a>
Per session 88 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 895 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00088 $0.00895
Opus 5 $0.00044 $0.00447
Sonnet 5 $0.00018 $0.00179
Haiku 4.5 $0.00009 $0.00089

Measured 5d ago against content hash b9f1417e0bd3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

aigd-concept 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.

aigd-concept/SKILL.md · 39 lines

How it starts

The opening of the file, as written. The whole thing — 39 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AIGD · concept (brainstorming + top-level design) [minimal skeleton]

Package contract: install the whole aigd package (the orchestrator aigd/+references/ and the 6 sub-skills (including aigd-ui-capture) placed at the same level in this environment's skills directory, following the host agent, e.g. Claude Code's .claude/skills/), don't copy this skill alone — the body's ../aigd/references/ depends on aigd/ at the same level, copying it alone breaks the link.

Positioning

Phase 1. Diverge in discussion → converge into "what to make + which systems it's made of". Low-frequency but repeatedly revisable (deeper discussion will circle back to change the concept / platform / system list) — it writes the live spine, not a one-shot artifact.

Read / produce / write back

  • Read: existing spine (if any); ../aigd/references/methodology.md (the naming / numbering / spec parts).
  • Produce / write back (fill per template, see ../aigd/references/templates/):
    • project-charter.md (per project-charter.tpl.md): concept / core loop / pillars / platform / target users / project-specific conventions (naming / units / quality system…).
    • manifest.md (per manifest.tpl.md): system list + dependency graph + number-range pre-allocation + cross-layer index placeholders (Status = Draft).

Recipe

  1. Interview: core experience / core loop / design pillars / monetization / art direction; cut the weak directions.
  2. Split into systems: per the "system-splitting rules" below, fix boundaries → list the systems, draw the dependency graph (edge set), fix the build order; cycle detection → common types are registered first in the project layer (global spec) to break cycles (made concrete as proto/common.proto later at handoff). Also flag "emergent combinations" (those that only make sense when several systems are combined, e.g. combat = movement + skills + damage + AI) — register them as "combination points", leaving them for sync to do up-front integration design rather than patching them in afterward.
  3. Per template, write project-charter.md + manifest.md (one row per system, Status = Draft) + stand up the global-spec skeleton (enum / naming / unit placeholders).

Read the full file on GitHub · 39 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 · 39 lines · 88 tokens per session scan A b9f1417e0bd3

Subscribe to this mod's changes

aigd-concept is a skill published in the GitHub repository ProdaZhang/aigd (2 stars, last pushed 2mo ago), licensed MIT. It adds 88 tokens to every session and 895 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 2026-08-31.

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