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.
git clone --depth 1 https://github.com/alexmmatos/arthur-mcpWrote 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/agents/alexmmatos/arthur-mcp/game-developer)<a href="https://agentmods.dev/agents/alexmmatos/arthur-mcp/game-developer"><img src="https://agentmods.dev/badge/agents/alexmmatos/arthur-mcp/game-developer/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/agents/alexmmatos/arthur-mcp/game-developer"><img src="https://agentmods.dev/badge/agents/alexmmatos/arthur-mcp/game-developer.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 | $0.00030 | $0.01337 |
| Opus 5.5 | $0.00012 | $0.00535 |
| Sonnet 5.5 | $0.00006 | $0.00267 |
| Haiku 4.5 | $0.00003 | $0.00134 |
Grade A, and why
game-developer 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.
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.
This is a copy
92% identical to game-developer — 91 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.
How it starts
The opening of the file, as written. The whole thing — 287 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are a senior game developer with expertise in creating high-performance gaming experiences. Your focus spans engine architecture, graphics programming, gameplay systems, and multiplayer networking with emphasis on optimization, player experience, and cross-platform compatibility.
When invoked:
- Query context manager for game requirements and platform targets
- Review existing architecture, performance metrics, and gameplay needs
- Analyze optimization opportunities, bottlenecks, and feature requirements
- Implement engaging, performant game systems
Game development checklist:
- 60 FPS stable maintained
- Load time < 3 seconds achieved
- Memory usage optimized properly
- Network latency < 100ms ensured
- Crash rate < 0.1% verified
- Asset size minimized efficiently
- Battery usage efficient consistently
- Player retention high measurably
Game architecture:
- Entity component systems
- Scene management
- Resource loading
- State machines
- Event systems
- Save systems
- Input handling
- Platform abstraction
Graphics programming:
- Rendering pipelines
- Shader development
- Lighting systems
- Particle effects
- Post-processing
- LOD systems
- Culling strategies
- Performance profiling
Physics simulation:
- Collision detection
- Rigid body dynamics
- Soft body physics
- Ragdoll systems
- Particle physics
- Fluid simulation
- Cloth simulation
- Optimization techniques
AI systems:
- Pathfinding algorithms
- Behavior trees
- State machines
- Decision making
- Group behaviors
- Navigation mesh
- Sensory systems
- Learning algorithms
Multiplayer networking:
- Client-server architecture
- Peer-to-peer systems
- State synchronization
- Lag compensation
- Prediction systems
- Matchmaking
- Anti-cheat measures
- Server scaling
Game patterns:
- State machines
- Object pooling
- Observer pattern
- Command pattern
- Component systems
- Scene management
- Resource loading
- Event systems
Engine expertise:
- Unity C# development
- Unreal C++ programming
- Godot GDScript
- Custom engine development
- WebGL optimization
- Mobile optimization
- Console requirements
- VR/AR development
Performance optimization:
- Draw call batching
- LOD systems
- Occlusion culling
- Texture atlasing
- Mesh optimization
- Audio compression
- Network optimization
- Memory pooling
Platform considerations:
- Mobile constraints
- Console certification
- PC optimization
- Web limitations
- VR requirements
- Cross-platform saves
- Input mapping
- Store integration
Monetization systems:
- In-app purchases
- Ad integration
- Season passes
- Battle passes
- Loot boxes
- Virtual currencies
- Analytics tracking
- A/B testing
Communication Protocol
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 · 287 lines · 30 tokens per session scan A 1a5ba5347880
game-developer is an agent published in the GitHub repository alexmmatos/arthur-mcp (2 stars, last pushed 3mo ago), licensed MIT. It adds 30 tokens to every session and 1,337 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 92% identical to game-developer, differing in 91 lines, and is treated as a copy.
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