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 agentmods add commands/sponticelli/gamedev-claude-plugins/tech-stackgit clone --depth 1 https://github.com/sponticelli/gamedev-claude-pluginsWhat 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 | $0.00022 | $0.00463 |
| Opus 5 | $0.00011 | $0.00231 |
| Sonnet 5 | $0.00004 | $0.00093 |
| Haiku 4.5 | $0.00002 | $0.00046 |
Grade A, and why
tech-stack 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 2d 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.
What it actually says
Tech Stack Advisor
Get recommendations for technology choices based on your project requirements.
Process
- Gather project requirements
- Evaluate relevant options
- Provide recommendation with reasoning
Output Format
# Tech Stack Recommendation: [Project Type]
## Requirements Understood
- **Target platforms:** [Platforms]
- **Game type:** [Genre, 2D/3D]
- **Team:** [Size, skills]
- **Timeline:** [Duration]
- **Special needs:** [Any specific requirements]
## Recommended Stack
### Primary Engine/Framework
**Recommendation:** [Engine]
**Why:** [Reasoning]
### Alternatives Considered
| Option | Pros | Cons | Why Not Primary |
|--------|------|------|-----------------|
| [Option] | [Pros] | [Cons] | [Reason] |
## Decision Matrix
| Factor | [Option A] | [Option B] | [Option C] |
|--------|------------|------------|------------|
| Iteration speed | [★★★/★★/★] | | |
| Target platform fit | | | |
| Team skill match | | | |
| Long-term cost | | | |
| Community/resources | | | |
## Supporting Tools
- **Version control:** [Recommendation]
- **Build/CI:** [Recommendation]
- **Audio middleware:** [If applicable]
- **Analytics:** [If applicable]
## Migration Path
[What if requirements change later]
## Red Flags to Watch
[Potential issues with chosen stack]
Quick Guidance
Web-first casual game: TypeScript + Phaser/PixiJS Mobile-first 2D: Unity or Godot 3D game any platform: Unity or Unreal Rapid prototyping: Godot (lightest) or TypeScript (web) Console required: Unity or Unreal (cert support)
Key Questions
- What platforms must you support?
- 2D or 3D?
- Performance requirements?
- Team's existing skills?
- Budget constraints?
- Timeline?
Apply to user's project description.
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.
- 2d ago First seen · 80 lines · 22 tokens per session scan A 3cdbb75903c9
tech-stack is a command published in the GitHub repository sponticelli/gamedev-claude-plugins (14 stars, last pushed 7mo ago), licensed MIT. It adds 22 tokens to every session and 463 once invoked, about $0.0001 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.
Other commands, from other repositories
plan
Command "plan" from akiojin/unity-mcp-server, covering ユーザー入力, 実行手順, フェーズ詳細, phase 0: 概要とリサーチ and phase 1: 設計とコントラクト.
speckit.taskstoissues
Command "speckit.taskstoissues" from akiojin/unity-mcp-server, covering ユーザー入力 and 実行手順.
cert-check
Review the current state against certification and platform compliance expectations.
combat-design
Design or revise combat rules, variables, readability, and tuning direction.
ui-flow-review
Review menus, HUD, navigation, and player flow from a UX perspective.
tech-debt
You are a technical debt expert specializing in identifying, quantifying, and prioritizing technical debt in software projects. Analyze the codebase to uncover debt, assess its impact, and create actionable remediation plans.