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.
npx skills add GoogilyBoogily/googilyboogily-claude-power-tools --skill concept-gathergit clone --depth 1 https://github.com/GoogilyBoogily/googilyboogily-claude-power-toolsWrote 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.
[](https://agentmods.dev/skills/googilyboogily/googilyboogily-claude-power-tools/concept-gather)<a href="https://agentmods.dev/skills/googilyboogily/googilyboogily-claude-power-tools/concept-gather"><img src="https://agentmods.dev/badge/skills/googilyboogily/googilyboogily-claude-power-tools/concept-gather/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.
<a href="https://agentmods.dev/skills/googilyboogily/googilyboogily-claude-power-tools/concept-gather"><img src="https://agentmods.dev/badge/skills/googilyboogily/googilyboogily-claude-power-tools/concept-gather.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00051 | $0.02020 |
| Opus 5 | $0.00026 | $0.01010 |
| Sonnet 5 | $0.00010 | $0.00404 |
| Haiku 4.5 | $0.00005 | $0.00202 |
Grade A, and why
concept-gather 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 246 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Concept Phase — Context Gathering
Gather all context needed to write the Concept phase (Phase 0) of a Game Design Bible. This skill runs an interactive Q&A session, dispatches research, and compiles a structured context file that the concept-generate skill consumes.
Input
$ARGUMENTS — a game concept description, and optionally:
--scope <indie|aa|aaa>— project scope tier (defaults toindie)--output-dir <path>— where to write outputs (defaults todocs/game-design-bible/)
Parse Arguments
Extract from $ARGUMENTS:
- Game Concept: All non-flag text describing the game idea
- Scope:
--scope <value>or default toindie - Output Dir:
--output-dir <path>or default todocs/game-design-bible/
Pre-flight Check
Before starting, check if <output-dir>/INDEX.md already exists using Glob. If it does:
- Warn the user: "An existing Game Design Bible was found at
<output-dir>/INDEX.md. Running concept-gather will overwrite the Phase 0 context." - Suggest: "If you want to continue an existing bible, use
bible-continueinstead." - Ask the user to confirm they want to proceed or abort.
If no INDEX.md exists, proceed.
Source Integrity Rules
Every factual claim in the context file must be traceable to research performed in this session.
- Cite your work. Reference specific URLs from web research or file paths from code research.
- Never reference prior Claude sessions or Claude memory.
- Assumptions are labeled, not hidden. Unresearched claims go in Open Questions.
Process
Human-in-the-loop: Never proceed past a decision point without user approval.
Phase 1: Core Fantasy
Ask the user about the Core Fantasy — the emotional experience the player should feel, NOT the mechanics.
Use AskUserQuestion to explore:
- "What emotion or feeling should define the player's experience?"
- "When a player finishes a session, what should they feel?"
- "Is there a real-world or fictional experience this should evoke?"
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.
- 9d ago First seen · 246 lines · 51 tokens per session scan A 4db49cd388f8
concept-gather is a skill published in the GitHub repository GoogilyBoogily/googilyboogily-claude-power-tools (2 stars, last pushed 4mo ago), licensed MIT. It adds 51 tokens to every session and 2,020 once invoked, about $0.0003 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 2026-09-03.
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