Publish karpathy-guidelines skill to marketplace

Constraint: Public skills are published only by explicit administrator action unless they are tracked third-party market sources.
Confidence: high
Scope-risk: narrow
Directive: Keep private/internal skills out of the public marketplace.
Tested: Marketplace validation passed.

.agents/plugins/marketplace.json

@@ -135,6 +135,18 @@
         "authentication": "ON_INSTALL"
       },
       "category": "工具"
+    },
+    {
+      "name": "karpathy-guidelines",
+      "source": {
+        "source": "local",
+        "path": "./plugins/codex/plugins/karpathy-guidelines"
+      },
+      "policy": {
+        "installation": "AVAILABLE",
+        "authentication": "ON_INSTALL"
+      },
+      "category": "开发工具"
     }
   ]
 }

plugins/codex/.agents/plugins/marketplace.json

@@ -135,6 +135,18 @@
         "authentication": "ON_INSTALL"
       },
       "category": "工具"
+    },
+    {
+      "name": "karpathy-guidelines",
+      "source": {
+        "source": "local",
+        "path": "./plugins/karpathy-guidelines"
+      },
+      "policy": {
+        "installation": "AVAILABLE",
+        "authentication": "ON_INSTALL"
+      },
+      "category": "开发工具"
     }
   ]
 }

plugins/codex/plugins/karpathy-guidelines/.codex-plugin/plugin.json

@@ -0,0 +1,37 @@
+{
+  "name": "karpathy-guidelines",
+  "version": "1.0.0",
+  "description": "andrej-karpathy-skills 是一个由社区开发者 forrestchang 整理的 Claude Code 最佳实践配置集，灵感来源于AI领域顶级大牛 Andrej Karpathy（前特斯拉AI总监、OpenAI联合创始人）在使用 AI 编程助手过程中分享的经验和技巧。",
+  "author": {
+    "name": "EAPIL",
+    "url": "https://git.playones.com/arechen/EapilSkillMarket"
+  },
+  "homepage": "https://git.playones.com/arechen/EapilSkillMarket",
+  "repository": "https://git.playones.com/arechen/EapilSkillMarket",
+  "license": "Proprietary",
+  "keywords": [
+    "eapil",
+    "codex-skill",
+    "karpathy-guidelines"
+  ],
+  "skills": "./skills/",
+  "interface": {
+    "displayName": "karpathy-guidelines",
+    "shortDescription": "andrej-karpathy-skills 是一个由社区开发者 forrestchang 整理的 Claude Code 最佳实践配置集，灵感来源于AI领域顶级大牛 Andrej Karpathy（前特斯拉AI总监、OpenAI联合创始人）在使用 AI 编程助手过程中分享的经验和技巧。",
+    "longDescription": "andrej-karpathy-skills 是一个由社区开发者 forrestchang 整理的 Claude Code 最佳实践配置集，灵感来源于AI领域顶级大牛 Andrej Karpathy（前特斯拉AI总监、OpenAI联合创始人）在使用 AI 编程助手过程中分享的经验和技巧。",
+    "developerName": "EAPIL",
+    "category": "开发工具",
+    "capabilities": [
+      "Read",
+      "Write"
+    ],
+    "defaultPrompt": [
+      "使用 karpathy-guidelines 帮我完成这个任务。"
+    ],
+    "websiteURL": "https://git.playones.com/arechen/EapilSkillMarket",
+    "privacyPolicyURL": "https://git.playones.com/arechen/EapilSkillMarket",
+    "termsOfServiceURL": "https://git.playones.com/arechen/EapilSkillMarket",
+    "brandColor": "#2563EB",
+    "screenshots": []
+  }
+}

plugins/codex/plugins/karpathy-guidelines/skills/karpathy-guidelines/SKILL.md

@@ -0,0 +1,67 @@
+---
+name: karpathy-guidelines
+description: Behavioral guidelines to reduce common LLM coding mistakes. Use when writing, reviewing, or refactoring code to avoid overcomplication, make surgical changes, surface assumptions, and define verifiable success criteria.
+license: MIT
+---
+
+# Karpathy Guidelines
+
+Behavioral guidelines to reduce common LLM coding mistakes, derived from [Andrej Karpathy's observations](https://x.com/karpathy/status/2015883857489522876) on LLM coding pitfalls.
+
+**Tradeoff:** These guidelines bias toward caution over speed. For trivial tasks, use judgment.
+
+## 1. Think Before Coding
+
+**Don't assume. Don't hide confusion. Surface tradeoffs.**
+
+Before implementing:
+- State your assumptions explicitly. If uncertain, ask.
+- If multiple interpretations exist, present them - don't pick silently.
+- If a simpler approach exists, say so. Push back when warranted.
+- If something is unclear, stop. Name what's confusing. Ask.
+
+## 2. Simplicity First
+
+**Minimum code that solves the problem. Nothing speculative.**
+
+- No features beyond what was asked.
+- No abstractions for single-use code.
+- No "flexibility" or "configurability" that wasn't requested.
+- No error handling for impossible scenarios.
+- If you write 200 lines and it could be 50, rewrite it.
+
+Ask yourself: "Would a senior engineer say this is overcomplicated?" If yes, simplify.
+
+## 3. Surgical Changes
+
+**Touch only what you must. Clean up only your own mess.**
+
+When editing existing code:
+- Don't "improve" adjacent code, comments, or formatting.
+- Don't refactor things that aren't broken.
+- Match existing style, even if you'd do it differently.
+- If you notice unrelated dead code, mention it - don't delete it.
+
+When your changes create orphans:
+- Remove imports/variables/functions that YOUR changes made unused.
+- Don't remove pre-existing dead code unless asked.
+
+The test: Every changed line should trace directly to the user's request.
+
+## 4. Goal-Driven Execution
+
+**Define success criteria. Loop until verified.**
+
+Transform tasks into verifiable goals:
+- "Add validation" → "Write tests for invalid inputs, then make them pass"
+- "Fix the bug" → "Write a test that reproduces it, then make it pass"
+- "Refactor X" → "Ensure tests pass before and after"
+
+For multi-step tasks, state a brief plan:
+```
+1. [Step] → verify: [check]
+2. [Step] → verify: [check]
+3. [Step] → verify: [check]
+```
+
+Strong success criteria let you loop independently. Weak criteria ("make it work") require constant clarification.