diff --git a/skills/preloaded/openmaic-classroom/SKILL.md b/skills/preloaded/openmaic-classroom/SKILL.md
index 108a0e4f..b42b0e14 100644
--- a/skills/preloaded/openmaic-classroom/SKILL.md
+++ b/skills/preloaded/openmaic-classroom/SKILL.md
@@ -1,6 +1,6 @@
 ---
 name: openmaic-classroom
-description: 将 RAG 检索结果或文档块转换为 OpenMAIC 互动课程。当用户要求将知识库内容、检索到的文档片段、或上传的文档转换为教学课件/互动课堂时使用此技能。支持纯需求生成和基于 PDF 内容的课程生成。
+description: 将 RAG 检索结果、文档块或知识图谱概念转换为 OpenMAIC 互动课程。当用户要求将知识库内容、检索到的文档片段、上传的文档、或知识图谱中的概念批量转换为教学课件/互动课堂时使用此技能。支持纯需求生成、基于 PDF 内容的课程生成、和基于概念图遍历的批量课堂生成。
 ---
 
 # OpenMAIC Classroom Generator
@@ -12,6 +12,7 @@ description: 将 RAG 检索结果或文档块转换为 OpenMAIC 互动课程。
 1. **RAG → 课程**: 将知识检索结果提炼为教学需求（requirement），通过 OpenMAIC API 生成互动课程
 2. **PDF → 课程**: 解析用户上传的 PDF，结合内容生成课程
 3. **文档块 → 课程集**: 将多个文档块/知识片段组织为多阶段课程集
+4. **概念图遍历 → 批量微课堂**: 遍历知识图谱中所有 concept 页面，每个 concept 生成一个 micro-classroom
 
 ## 能力边界
 
@@ -62,12 +63,13 @@ OpenMAIC 有两种使用模式，**根据用户场景选择**：
 - "基于检索结果生成课程"
 - "为这个知识点创建互动课堂"
 - "将知识库内容转换为教学材料"
+- "批量生成课程" / "把知识图谱的概念都做成课堂" / "基于概念图生成微课堂"
 
 ## 工作流程
 
 ### Phase 1: 确认输入源
 
-确认课程生成的输入来源（三选一）：
+确认课程生成的输入来源（四选一）：
 
 1. **纯需求生成**: 用户直接描述教学主题，无需额外文档
    → 直接使用用户描述作为 `requirement`，**无需调用脚本**
@@ -75,6 +77,8 @@ OpenMAIC 有两种使用模式，**根据用户场景选择**：
    → 使用 `scripts/rag-to-requirement.py` 脚本转换检索结果为结构化 requirement（见 Phase 1.1）
 3. **PDF 文件**: 用户提供 PDF 文件路径，先解析再调用生成 API
    → 提取 PDF 文本后构建 requirement，**无需调用脚本**
+4. **概念图遍历批量生成**: 遍历知识图谱中所有 concept 页面，每个 concept 生成一个 micro-classroom
+   → 使用 `scripts/concept-to-requirement.py` 脚本转换 concept + 关联 entity 为结构化 requirement（见 Phase 1.2）
 
 ### Phase 1.1: RAG 结果 → Requirement 转换（仅适用于场景 2）
 
@@ -101,6 +105,82 @@ execute_skill_script(
 - **不要**在没有任何参数的情况下调用此脚本，否则会报错退出
 - 如果脚本执行失败，可直接根据检索结果手动构建 requirement
 
+### Phase 1.2: Concept Graph → Requirement 转换（仅适用于场景 4）
+
+当场景 4 需要基于知识图谱概念批量生成课堂时，执行以下步骤：
+
+**步骤 1：列出所有 concept 页面**
+
+使用 `wiki_search` 工具搜索所有 concept 类型的页面：
+
+```
+wiki_search("^concept/", limit=50)
+```
+
+如果 concept 数量超过 50 个，多次调用翻页直到获取全部。
+
+**步骤 2：对每个 concept 获取详情和关联 entity**
+
+对每个 concept 页面：
+
+1. 调用 `wiki_read_page([concept_slug])` 获取页面详情（含 OutLinks 和 InLinks）
+2. 从 OutLinks 和 InLinks 中筛选出 `entity/*` 开头的 slug
+3. 确定每个 entity 的 link_type：
+   - 同时出现在 OutLinks 和 InLinks 中 → `bidirectional`
+   - 仅出现在 OutLinks 中 → `outlink`
+   - 仅出现在 InLinks 中 → `inlink`
+4. 调用 `wiki_read_page([entity_slugs])` 批量读取关联 entity（只取 title + summary，不取完整 content）
+
+**步骤 3：转换为 requirement**
+
+对每个 concept，调用 `scripts/concept-to-requirement.py` 将 concept + 关联 entity 转换为 requirement：
+
+```
+execute_skill_script(
+  skill_name: "openmaic-classroom",
+  script_path: "scripts/concept-to-requirement.py",
+  input: '{"concept": {"slug": "...", "title": "...", "summary": "...", "content": "..."}, "entities": [{"slug": "...", "title": "...", "summary": "...", "link_type": "..."}], "language": "zh-CN", "depth": "intermediate"}'
+)
+```
+
+**input 参数格式（JSON 字符串，必须通过 `input` 参数传入）：**
+- `concept`（必填）: concept 页面对象，包含 `slug`、`title`、`summary`、`content`
+- `entities`（可选）: 关联 entity 数组，每项包含 `slug`、`title`、`summary`、`link_type`
+- `language`（可选）: `zh-CN|en-US`，默认 `zh-CN`
+- `depth`（可选）: `beginner|intermediate|advanced`，默认 `intermediate`
+- `audience`（可选）: 目标受众描述，默认"相关领域的学习者"
+
+**步骤 4：顺序调用 OpenMAIC API**
+
+对每个 concept 的 requirement，**顺序**调用 OpenMAIC 生成 API（concurrency=1）：
+
+- 每个 concept → 一个 micro-classroom
+- requirement 中标注 `micro-classroom`
+- 不可并行，避免配额冲突
+
+**步骤 5：生成 manifest（可恢复性）**
+
+生成 manifest JSON，记录每个 concept 的生成状态：
+
+```json
+{
+  "kb_id": "...",
+  "total_concepts": 10,
+  "generated": ["concept/rag", "concept/llm"],
+  "failed": [{"slug": "concept/embedding", "error": "..."}],
+  "pending": ["concept/vector-db"]
+}
+```
+
+失败时从断点继续：跳过 `generated` 中的 concept，从 `pending` 的第一个开始。
+
+**关键约束**：
+- wiki 读取和脚本转换允许 batching
+- OpenMAIC API 生成 concurrency=1
+- concept.Summary 作为 requirement 核心锚定
+- entity 只取 title + summary，不取完整 content
+- 无关联 entity 的 concept 仍可生成课堂（缺少实践环节）
+
 ### Phase 2: 构建 Generation Request
 
 根据输入源构建请求体，**字段说明**：
@@ -120,6 +200,7 @@ execute_skill_script(
 - **场景 1（纯需求）**: `requirement` 直接使用用户描述
 - **场景 2（RAG 结果）**: `requirement` 使用 Phase 1.1 脚本输出中的 `requirement` 字段
 - **场景 3（PDF）**: `requirement` 根据 PDF 提取的文本构建，`pdfContent` 填入解析结果
+- **场景 4（概念图遍历）**: `requirement` 使用 Phase 1.2 脚本输出中的 `requirement` 字段，每个 concept 单独调用 API
 
 ### Phase 3: 调用 OpenMAIC API
 
@@ -261,6 +342,23 @@ Classroom URL:
 4. 如果 MCP 工具不可用，告知用户先部署 mcp_api_requester（见 MCP 可用性检查）
 5. 汇总返回所有 Classroom URL
 
+## 概念图遍历 → 批量微课堂
+
+当用户需要基于知识图谱概念批量生成课堂时（场景 4），遵循 Phase 1.2 的完整流程。
+
+**MVP 课程编排策略**：one concept → one micro-classroom
+
+**课程类型标注**：requirement 中标注 `micro-classroom`
+
+**批处理可恢复性**：生成 manifest JSON，记录每个 concept 的生成状态，失败时可从断点继续。
+
+**关键约束**：
+- wiki 读取和脚本转换允许 batching
+- OpenMAIC API 生成 concurrency=1
+- concept.Summary 作为 requirement 核心锚定
+- entity 只取 title + summary，不取完整 content
+- 无关联 entity 的 concept 仍可生成课堂（缺少实践环节）
+
 ## 注意事项
 
 - 脚本在 Docker 沙箱中执行，**沙箱默认禁用网络访问**
diff --git a/skills/preloaded/openmaic-classroom/references/requirement-builder.md b/skills/preloaded/openmaic-classroom/references/requirement-builder.md
index c023e6d5..852befff 100644
--- a/skills/preloaded/openmaic-classroom/references/requirement-builder.md
+++ b/skills/preloaded/openmaic-classroom/references/requirement-builder.md
@@ -70,6 +70,66 @@ OpenMAIC 的 `requirement` 字段需要是**结构化的教学需求描述**，
 - 重点覆盖：[关键主题列表]
 ```
 
+### 模板 5: 基于概念图遍历（Concept Graph）
+
+当从知识图谱 concept 页面及其关联 entity 生成微课堂时使用此模板。由 `scripts/concept-to-requirement.py` 自动生成。
+
+**输入结构**：
+```json
+{
+  "concept": { "slug": "concept/rag", "title": "RAG 检索增强生成", "summary": "...", "content": "..." },
+  "entities": [
+    { "slug": "entity/vector-db", "title": "向量数据库", "summary": "...", "link_type": "outlink" },
+    { "slug": "entity/embedding", "title": "Embedding 模型", "summary": "...", "link_type": "bidirectional" }
+  ],
+  "language": "zh-CN",
+  "depth": "intermediate",
+  "audience": "相关领域的学习者"
+}
+```
+
+**输出 requirement 结构**：
+```
+基于知识图谱概念「[concept.title]」，为[audience]创建一个[depth]微课堂（micro-classroom）。
+
+教学锚点：[concept.summary]
+
+学习目标：
+  - 理解[concept.summary 中的关键句]
+
+核心知识点：
+  - [从 concept.content 解析的定义/机制]
+
+关联实体（实践环节）：
+  - 案例：[entity.title]：[entity.summary]
+  - 工具：[entity.title]：[entity.summary]
+  - 应用场景：[entity.title]：[entity.summary]
+  - 前置知识：[entity.title]
+
+实践任务：
+  - 通过 [entity.title] 实践 [concept.title] 的应用
+
+常见误区检查：
+  - [从 concept.content 解析的误区]
+
+评估提示：
+  - 请解释 [concept.title] 的核心定义
+
+请使用中文生成课程内容。
+```
+
+**entity 分类排序规则**（纯文本操作，无 LLM/embedding）：
+- link_type 权重：bidirectional (+3) > outlink (+2) > inlink (+1)
+- title token overlap：concept title 分词后与 entity title 的交集数 (+1 per hit, cap +2)
+- summary keyword hit：concept summary 关键词在 entity summary 中出现 (+1 per hit, cap +2)
+- slug token hit：concept slug token 在 entity slug 中出现 (+1)
+- summary 为空扣分 (-2)
+- 取 top 3-5 entities，分为 Examples / Tools / Application Scenarios / Prerequisites
+
+**概念内容解析逻辑**：
+- 优先解析 markdown 结构：标题列表（定义段、机制段、案例段、误区段）
+- fallback 到前 N 字
+
 ## 示例
 
 ### 示例 1: 技术文档 → 课程
diff --git a/skills/preloaded/openmaic-classroom/scripts/concept-to-requirement.py b/skills/preloaded/openmaic-classroom/scripts/concept-to-requirement.py
new file mode 100644
index 00000000..a71a81dd
--- /dev/null
+++ b/skills/preloaded/openmaic-classroom/scripts/concept-to-requirement.py
@@ -0,0 +1,412 @@
+#!/usr/bin/env python3
+"""
+Concept Graph Material → OpenMAIC Requirement 转换器
+
+将 WeKnora wiki 知识图谱中的 concept 页面及其关联 entity 转换为
+结构化的 OpenMAIC 课程生成需求描述。两阶段转换：
+  1. Concept Graph Material → Pedagogical Design JSON
+  2. Pedagogical Design JSON → requirement string
+
+此脚本仅做数据转换，不涉及网络调用。
+
+用法:
+  echo '{"concept": {...}, "entities": [...]}' | python scripts/concept-to-requirement.py
+  python scripts/concept-to-requirement.py --file input.json
+"""
+
+import json
+import re
+import sys
+from typing import Any
+
+
+def _tokenize(text: str) -> list[str]:
+    """Simple whitespace + punctuation tokenizer for title/slug overlap."""
+    return [t.lower() for t in re.split(r"[\s_\-/]+", text) if t]
+
+
+def _score_entity(
+    entity: dict[str, Any],
+    concept_title_tokens: list[str],
+    concept_summary_keywords: list[str],
+    concept_slug_tokens: list[str],
+) -> int:
+    """Score an entity by relevance to the concept (pure text heuristics)."""
+    score = 0
+
+    # link_type scoring
+    link_type = entity.get("link_type", "")
+    if link_type == "bidirectional":
+        score += 3
+    elif link_type == "outlink":
+        score += 2
+    elif link_type == "inlink":
+        score += 1
+
+    # title token overlap
+    entity_title_tokens = set(_tokenize(entity.get("title", "")))
+    overlap = entity_title_tokens & set(concept_title_tokens)
+    score += min(len(overlap), 2)
+
+    # summary keyword hit
+    entity_summary = (entity.get("summary") or "").lower()
+    keyword_hits = sum(1 for kw in concept_summary_keywords if kw in entity_summary)
+    score += min(keyword_hits, 2)
+
+    # slug token hit
+    entity_slug_tokens = set(_tokenize(entity.get("slug", "")))
+    slug_overlap = entity_slug_tokens & set(concept_slug_tokens)
+    score += min(len(slug_overlap), 1)
+
+    # penalty for empty summary
+    if not entity.get("summary"):
+        score -= 2
+
+    return score
+
+
+def _classify_entity(
+    entity: dict[str, Any], concept_title: str
+) -> str:
+    """Classify an entity into a pedagogical role."""
+    title = (entity.get("title") or "").lower()
+    summary = (entity.get("summary") or "").lower()
+    text = f"{title} {summary}"
+
+    tool_keywords = ["工具", "平台", "框架", "库", "sdk", "api", "tool", "platform", "framework", "library"]
+    example_keywords = ["案例", "实例", "示例", "应用", "case", "example", "application", "demo"]
+    prereq_keywords = ["前提", "基础", "前置", "先决", "prerequisite", "foundation", "basic"]
+
+    if any(kw in text for kw in tool_keywords):
+        return "Tools"
+    if any(kw in text for kw in example_keywords):
+        return "Examples"
+    if any(kw in text for kw in prereq_keywords):
+        return "Prerequisites"
+    return "Application Scenarios"
+
+
+def _parse_markdown_sections(content: str) -> dict[str, str]:
+    """Parse markdown content into sections keyed by heading."""
+    sections: dict[str, str] = {}
+    current_heading = ""
+    current_lines: list[str] = []
+
+    for line in content.split("\n"):
+        heading_match = re.match(r"^(#{1,4})\s+(.+)$", line)
+        if heading_match:
+            if current_heading:
+                sections[current_heading] = "\n".join(current_lines).strip()
+            current_heading = heading_match.group(2).strip()
+            current_lines = []
+        else:
+            current_lines.append(line)
+
+    if current_heading:
+        sections[current_heading] = "\n".join(current_lines).strip()
+
+    return sections
+
+
+def _extract_key_points(sections: dict[str, str]) -> list[str]:
+    """Extract key points from markdown sections (definitions, mechanisms)."""
+    points: list[str] = []
+    definition_headings = {"定义", "概念", "概述", "简介", "Definition", "Overview", "Introduction"}
+    mechanism_headings = {"机制", "原理", "工作原理", "Mechanism", "How it works", "Principle"}
+
+    for heading, body in sections.items():
+        if any(d in heading for d in definition_headings):
+            first_para = body.split("\n\n")[0].strip()
+            if first_para:
+                points.append(first_para[:200])
+        elif any(m in heading for m in mechanism_headings):
+            bullets = [l.strip().lstrip("-*• ") for l in body.split("\n") if l.strip().startswith(("- ", "* ", "• "))]
+            points.extend(bullets[:3])
+
+    return points[:5]
+
+
+def _extract_examples(sections: dict[str, str]) -> list[str]:
+    """Extract examples from markdown sections."""
+    example_headings = {"案例", "示例", "实例", "应用场景", "Example", "Use Case", "Application"}
+    examples: list[str] = []
+
+    for heading, body in sections.items():
+        if any(e in heading for e in example_headings):
+            bullets = [l.strip().lstrip("-*• ") for l in body.split("\n") if l.strip().startswith(("- ", "* ", "• "))]
+            examples.extend(bullets[:3])
+
+    return examples[:3]
+
+
+def _extract_misconceptions(sections: dict[str, str]) -> list[str]:
+    """Extract common misconceptions from markdown sections."""
+    misconception_headings = {"误区", "常见错误", "误解", "Misconception", "Common mistake", "Pitfall"}
+    misconceptions: list[str] = []
+
+    for heading, body in sections.items():
+        if any(m in heading for m in misconception_headings):
+            bullets = [l.strip().lstrip("-*• ") for l in body.split("\n") if l.strip().startswith(("- ", "* ", "• "))]
+            misconceptions.extend(bullets[:3])
+
+    return misconceptions[:3]
+
+
+def build_pedagogical_design(data: dict[str, Any]) -> dict[str, Any]:
+    """Stage 1: Concept Graph Material → Pedagogical Design JSON."""
+    concept = data["concept"]
+    entities = data.get("entities", [])
+    language = data.get("language", "zh-CN")
+    depth = data.get("depth", "intermediate")
+    audience = data.get("audience", "相关领域的学习者")
+
+    concept_title = concept.get("title", "")
+    concept_summary = concept.get("summary", "")
+    concept_content = concept.get("content", "")
+    concept_slug = concept.get("slug", "")
+
+    # Parse markdown sections from content
+    sections = _parse_markdown_sections(concept_content) if concept_content else {}
+
+    # Extract pedagogical elements from content
+    key_points = _extract_key_points(sections)
+    examples_from_content = _extract_examples(sections)
+    misconceptions = _extract_misconceptions(sections)
+
+    # Score and rank entities
+    concept_title_tokens = _tokenize(concept_title)
+    concept_summary_keywords = [w.lower() for w in re.findall(r"\w+", concept_summary) if len(w) > 1]
+    concept_slug_tokens = _tokenize(concept_slug)
+
+    scored_entities = []
+    for entity in entities:
+        score = _score_entity(entity, concept_title_tokens, concept_summary_keywords, concept_slug_tokens)
+        scored_entities.append((score, entity))
+    scored_entities.sort(key=lambda x: x[0], reverse=True)
+
+    # Select top entities (3-5)
+    top_count = min(max(3, len(scored_entities)), 5)
+    top_entities = scored_entities[:top_count]
+
+    # Classify entities into pedagogical roles
+    classified: dict[str, list[dict[str, Any]]] = {
+        "Examples": [],
+        "Tools": [],
+        "Application Scenarios": [],
+        "Prerequisites": [],
+    }
+    for score, entity in top_entities:
+        role = _classify_entity(entity, concept_title)
+        classified[role].append({
+            "slug": entity.get("slug", ""),
+            "title": entity.get("title", ""),
+            "summary": entity.get("summary", ""),
+            "link_type": entity.get("link_type", ""),
+            "relevance_score": score,
+        })
+
+    # Build learning objectives from concept summary
+    learning_objectives: list[str] = []
+    if concept_summary:
+        sentences = re.split(r"[。！？.!?]", concept_summary)
+        learning_objectives = [f"理解{s.strip()}" for s in sentences if s.strip()][:3]
+    if not learning_objectives:
+        learning_objectives = [f"掌握 {concept_title} 的核心概念"]
+
+    # Build practice tasks from entity examples
+    practice_tasks: list[str] = []
+    for ent in classified.get("Examples", []):
+        practice_tasks.append(f"通过 {ent['title']} 实践 {concept_title} 的应用")
+    for ent in classified.get("Application Scenarios", []):
+        practice_tasks.append(f"分析 {ent['title']} 在 {concept_title} 中的作用")
+    if not practice_tasks and top_entities:
+        _, first_ent = top_entities[0]
+        practice_tasks.append(f"结合 {first_ent.get('title', '相关实体')} 理解 {concept_title} 的实际应用")
+
+    # Build prerequisites from entity prerequisites
+    prerequisites: list[str] = []
+    for ent in classified.get("Prerequisites", []):
+        prerequisites.append(ent["title"])
+
+    # Build assessment prompts
+    assessment_prompts: list[str] = []
+    if concept_summary:
+        assessment_prompts.append(f"请解释 {concept_title} 的核心定义")
+    if key_points:
+        assessment_prompts.append(f"请描述 {concept_title} 的工作机制")
+    if classified.get("Examples"):
+        assessment_prompts.append(f"请举例说明 {concept_title} 的实际应用")
+
+    # Build warnings from misconceptions
+    warnings: list[str] = []
+    for m in misconceptions:
+        warnings.append(f"常见误区：{m}")
+
+    return {
+        "concept_slug": concept_slug,
+        "title": concept_title,
+        "teaching_anchor": concept_summary or concept_title,
+        "learning_objectives": learning_objectives,
+        "key_points": key_points,
+        "examples": examples_from_content,
+        "practice_tasks": practice_tasks,
+        "prerequisites": prerequisites,
+        "misconception_checks": misconceptions,
+        "assessment_prompts": assessment_prompts,
+        "warnings": warnings,
+        "classified_entities": classified,
+    }
+
+
+def build_requirement(design: dict[str, Any], data: dict[str, Any]) -> str:
+    """Stage 2: Pedagogical Design JSON → requirement string."""
+    concept = data["concept"]
+    depth = data.get("depth", "intermediate")
+    audience = data.get("audience", "相关领域的学习者")
+    language = data.get("language", "zh-CN")
+
+    depth_map = {"beginner": "入门", "intermediate": "中级", "advanced": "高级"}
+    depth_cn = depth_map.get(depth, "中级")
+
+    parts: list[str] = []
+
+    # Header
+    parts.append(f"基于知识图谱概念「{design['title']}」，为{audience}创建一个{depth_cn}微课堂（micro-classroom）。")
+    parts.append("")
+
+    # Teaching anchor
+    parts.append(f"教学锚点：{design['teaching_anchor']}")
+    parts.append("")
+
+    # Learning objectives
+    if design["learning_objectives"]:
+        parts.append("学习目标：")
+        for obj in design["learning_objectives"]:
+            parts.append(f"  - {obj}")
+        parts.append("")
+
+    # Key points
+    if design["key_points"]:
+        parts.append("核心知识点：")
+        for kp in design["key_points"]:
+            parts.append(f"  - {kp}")
+        parts.append("")
+
+    # Classified entities as practice context
+    classified = design.get("classified_entities", {})
+    entity_sections = []
+    for role in ("Examples", "Tools", "Application Scenarios", "Prerequisites"):
+        ents = classified.get(role, [])
+        if ents:
+            role_cn = {
+                "Examples": "案例",
+                "Tools": "工具",
+                "Application Scenarios": "应用场景",
+                "Prerequisites": "前置知识",
+            }[role]
+            ent_descs = [f"{e['title']}" + (f"：{e['summary'][:80]}" if e.get("summary") else "") for e in ents]
+            entity_sections.append(f"{role_cn}：{'；'.join(ent_descs)}")
+
+    if entity_sections:
+        parts.append("关联实体（实践环节）：")
+        for section in entity_sections:
+            parts.append(f"  - {section}")
+        parts.append("")
+
+    # Practice tasks
+    if design["practice_tasks"]:
+        parts.append("实践任务：")
+        for task in design["practice_tasks"]:
+            parts.append(f"  - {task}")
+        parts.append("")
+
+    # Misconception checks
+    if design["misconception_checks"]:
+        parts.append("常见误区检查：")
+        for mc in design["misconception_checks"]:
+            parts.append(f"  - {mc}")
+        parts.append("")
+
+    # Assessment
+    if design["assessment_prompts"]:
+        parts.append("评估提示：")
+        for ap in design["assessment_prompts"]:
+            parts.append(f"  - {ap}")
+        parts.append("")
+
+    # Language directive
+    if language == "zh-CN":
+        parts.append("请使用中文生成课程内容。")
+
+    # Concept content fallback
+    concept_content = concept.get("content", "")
+    if concept_content and len(concept_content) > 200:
+        parts.append("")
+        parts.append(f"参考内容（前500字）：{concept_content[:500]}")
+
+    return "\n".join(parts)
+
+
+def process(input_data: dict[str, Any]) -> dict[str, Any]:
+    """Main processing: two-stage conversion."""
+    concept = input_data.get("concept")
+    if not concept:
+        return {
+            "requirement": "",
+            "pedagogical_design": {},
+            "metadata": {"error": "Missing 'concept' in input"},
+        }
+
+    entities = input_data.get("entities", [])
+
+    # Stage 1: Build pedagogical design
+    design = build_pedagogical_design(input_data)
+
+    # Stage 2: Build requirement string
+    requirement = build_requirement(design, input_data)
+
+    return {
+        "requirement": requirement,
+        "pedagogical_design": design,
+        "metadata": {
+            "concept_slug": concept.get("slug", ""),
+            "entity_count": len(entities),
+            "depth": input_data.get("depth", "intermediate"),
+            "language": input_data.get("language", "zh-CN"),
+        },
+    }
+
+
+def main() -> None:
+    """Entry point: read from stdin or file, output JSON."""
+    import argparse
+
+    parser = argparse.ArgumentParser(description="Concept Graph → OpenMAIC Requirement 转换器")
+    parser.add_argument("--file", "-f", help="输入 JSON 文件路径")
+    args = parser.parse_args()
+
+    if args.file:
+        with open(args.file, "r", encoding="utf-8") as f:
+            input_data = json.load(f)
+    else:
+        input_text = sys.stdin.read()
+        if not input_text.strip():
+            print(
+                "错误: 未提供输入数据。用法:\n"
+                '  echo \'{"concept": {...}, "entities": [...]}\' | python concept-to-requirement.py\n'
+                "  python concept-to-requirement.py --file input.json",
+                file=sys.stderr,
+            )
+            sys.exit(1)
+        try:
+            input_data = json.loads(input_text)
+        except json.JSONDecodeError as e:
+            print(f"错误: 输入 JSON 解析失败: {e}", file=sys.stderr)
+            sys.exit(1)
+
+    result = process(input_data)
+    print(json.dumps(result, ensure_ascii=False, indent=2))
+
+
+if __name__ == "__main__":
+    main()