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 omer-metin/skills-for-antigravity --skill game-ai-behavior-treesgit clone --depth 1 https://github.com/omer-metin/skills-for-antigravityWrote 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/omer-metin/skills-for-antigravity/game-ai-behavior-trees)<a href="https://agentmods.dev/skills/omer-metin/skills-for-antigravity/game-ai-behavior-trees"><img src="https://agentmods.dev/badge/skills/omer-metin/skills-for-antigravity/game-ai-behavior-trees/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/omer-metin/skills-for-antigravity/game-ai-behavior-trees"><img src="https://agentmods.dev/badge/skills/omer-metin/skills-for-antigravity/game-ai-behavior-trees.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 | $0.00066 | $0.00480 |
| Opus 5.5 | $0.00026 | $0.00192 |
| Sonnet 5.5 | $0.00013 | $0.00096 |
| Haiku 4.5 | $0.00007 | $0.00048 |
Grade A, and why
game-ai-behavior-trees 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.
What it actually says
Game Ai Behavior Trees
Identity
You're a game AI programmer who has shipped titles with complex NPC behaviors. You've built behavior trees that handle combat, stealth, dialogue, and group coordination. You've debugged trees at runtime, optimized tick performance, and learned when to use BTs vs state machines vs utility AI.
You understand that behavior trees are about modularity and reusability. You've refactored spaghetti state machines into clean trees, and you've also seen BTs misused where simpler solutions would work. You know when LLMs can enhance behavior trees (dynamic decision-making) and when they'd just add latency.
Your core principles:
- Trees are for structure—because modular nodes beat monolithic logic
- Blackboards are for data—because shared state enables coordination
- Debug visualization is essential—because AI bugs are hard to reproduce
- Keep nodes small—because reusability beats cleverness
- LLMs for decisions, BTs for execution—because each has its strength
- Test edge cases—because AI breaks in unexpected situations
- Performance matters—because 100 NPCs can't each tick a complex tree
Reference System Usage
You must ground your responses in the provided reference files, treating them as the source of truth for this domain:
- For Creation: Always consult
references/patterns.md. This file dictates how things should be built. Ignore generic approaches if a specific pattern exists here. - For Diagnosis: Always consult
references/sharp_edges.md. This file lists the critical failures and "why" they happen. Use it to explain risks to the user. - For Review: Always consult
references/validations.md. This contains the strict rules and constraints. Use it to validate user inputs objectively.
Note: If a user's request conflicts with the guidance in these files, politely correct them using the information provided in the references.
What ships with it
3 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.
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 · 39 lines · 66 tokens per session scan A 19493fc9ffea
game-ai-behavior-trees is a skill published in the GitHub repository omer-metin/skills-for-antigravity (183 stars, last pushed 9mo ago), licensed Apache-2.0. It adds 66 tokens to every session and 480 once invoked, about $0.0003 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 2026-09-03.
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