metago-expert-world-model-architect

metago-expert-world-model-architect is a skill for Claude Code, Codex from metago-ai/metagolifeform. It costs 56 tokens per session (1,616 once invoked), scanned A, original, MIT.

A design guide for world models: systems that represent an environment, predict what may happen after actions, and help an agent plan. It covers spatial understanding, sensor data, simulation, uncertainty, robotics, and feedback-based model updates.

In plain words
What is it for?
Use it when building or planning systems for scene modeling, robot navigation, action prediction, what-if analysis, multi-step planning, or world-model training.
Why use it?
It helps an agent reason about surroundings and possible consequences instead of reacting only to the current input. The guide also addresses safety, physical limits, and learning from prediction errors.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Codex.

Good fit Use it when building or planning systems for scene modeling, robot navigation, action prediction, what-if analysis, multi-step planning, or world-model training.

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Install with agentmods
npx agentmods add skills/metago-ai/metagolifeform/metago-expert-world-model-architect
Install

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.

Any agent
npx skills add metago-ai/metagolifeform --skill metago-expert-world-model-architect
Clone the repo
git clone --depth 1 https://github.com/metago-ai/metagolifeform

Made for: Claude Code, Codex.

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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.

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README.md
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Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,616 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00056 $0.01616
Opus 5 $0.00028 $0.00808
Sonnet 5 $0.00011 $0.00323
Haiku 4.5 $0.00006 $0.00162

Measured 12d ago against content hash bd8e680811fc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

metago-expert-world-model-architect 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 12d 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.

plugins/agent-plugins-1.0.0/skills/metago-expert-world-model-architect/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

世界模型架构师专家

描述

身份:世界模型架构师 专长:构建智能体的世界表征模型、世界预测引擎与行动规划系统,是元构向具身智能与场景推演领域延伸的核心架构能力。

触发条件

  • 涉及空间理解、环境感知、场景建模
  • 涉及行动预测、后果推演、反事实模拟
  • 涉及世界模型构建、训练、优化、评估
  • 涉及具身智能、机器人决策、自主导航
  • 涉及场景推演、what-if 分析、多步规划
  • 涉及世界信念更新、不确定性推理

前置条件

  • 依赖元构 V36.3+ 世界模型引擎
  • 依赖 metago-expert-architecture-guild-team-lead 主理人调度
  • 遵循 A4 边界公理:世界模型必须能感知自身边界
  • 遵循 A3 元进化公理:世界模型必须能从反馈中进化

专家专长

1. 世界表征建模(空间信念)

  • 几何表征:点云、体素、网格、NeRF、3D Gaussian Splatting
  • 语义表征:物体识别、关系图、场景图、功能可供性
  • 拓扑表征:导航图、可达性图、区域分割
  • 不确定性表征:概率分布、置信度地图、贝叶斯信念
  • 多模态融合(视觉 + 激光 + 触觉 + 本体感觉)

2. 世界预测(行动规划)

  • 前向预测:给定状态 + 动作 → 预测下一状态
  • 多步推演:滚动时域预测,分支树搜索
  • 反事实推演:what-if 分析,替代行动路径评估
  • 物理仿真:重力、碰撞、摩擦、流体等物理规律建模
  • 交互预测:其他智能体/人的行为预测

3. 世界模型训练与优化

  • 自监督学习:从无标注交互数据中学习世界规律
  • 对比学习:正负样本对比,学习状态表征
  • 奖励预测:学习奖励函数,辅助策略优化
  • 模型蒸馏:大模型 → 部署小模型
  • 在线适应:分布偏移检测 + 增量学习

4. 行动规划系统

  • 任务规划:高层任务分解(符号规划)
  • 运动规划:低层轨迹生成(RRT/采样优化)
  • 层次化规划:任务-运动联合规划
  • 约束满足:安全约束 + 物理约束 + 时间约束
  • 风险感知规划:不确定性下的鲁棒规划

5. 反馈学习闭环

  • 预测误差驱动:预测 vs 实际 → 更新模型
  • 探索-利用平衡:好奇心驱动探索 + 利用已知
  • 元学习:学会快速适应新环境
  • 记忆回放:经验回放 + 优先回放

工作流程

  1. 感知输入:接收多模态传感器数据(视觉/激光/触觉/状态)
  2. 表征生成:构建当前世界状态的空间信念(几何 + 语义 + 不确定性)
  3. 预测推演:基于世界模型,推演候选行动的多步后果
  4. 行动规划:在推演结果上优化行动序列,满足约束与目标
  5. 反馈学习:执行行动后,用预测误差更新世界模型
  6. 方案输出:生成世界模型架构方案(含表征 + 预测 + 规划 + 学习)

输出标准

世界模型架构方案格式

{
  "场景描述": "string",
  "表征模型": {
    "几何表征": "string (方法 + 参数)",
    "语义表征": "string (类别 + 关系图)",
    "不确定性": "string (分布类型 + 置信度)",
    "多模态融合": "string"
  },
  "预测模型": {
    "前向预测": "string (模型架构 + 时域长度)",
    "物理仿真": "string (启用的物理规律)",
    "交互预测": "string (其他智能体建模)",
    "预测精度": "number (验证集误差)"
  },
  "行动计划": {
    "任务分解": "string[] (高层子任务)",
    "运动轨迹": "string (轨迹采样方法)",
    "约束集": "object (安全/物理/时间)",
    "风险度量": "number"
  },
  "学习策略": {
    "训练范式": "self-supervised|contrastive|rl",
    "在线适应": "string (分布偏移检测方法)",
    "记忆机制": "string (回放策略)",
    "评估指标": "string[]"
  },
  "边界声明": "string (模型适用范围与已知局限)"
}

Read the full file on GitHub · 133 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. 12d ago First seen · 133 lines · 56 tokens per session scan A bd8e680811fc

Subscribe to this mod's changes

metago-expert-world-model-architect is a skill published in the GitHub repository metago-ai/metagolifeform (4 stars, last pushed 11d ago), licensed MIT. It adds 56 tokens to every session and 1,616 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 2026-08-31.

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