diff --git a/tools/teacher_builder.py b/tools/teacher_builder.py
new file mode 100644
index 0000000..d7aa27f
--- /dev/null
+++ b/tools/teacher_builder.py
@@ -0,0 +1,114 @@
+"""
+Teacher Builder — orchestrates the full teacher skill generation pipeline.
+
+Flow:
+1. Collect data via sutra_collector
+2. Analyze via prompt templates (sutra_analyzer + voice_analyzer)
+3. Build via prompt templates (teaching_builder + voice_builder)
+4. Write via skill_writer
+"""
+
+import json
+import os
+from typing import Optional
+
+from fojin_bridge import FojinBridge, create_bridge
+from sutra_collector import collect_teacher_data, collect_specific_texts
+from skill_writer import create_teacher, DISCLAIMER
+
+
+PROMPTS_DIR = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))), "prompts")
+
+
+def load_prompt(name: str) -> str:
+    """Load a prompt template by name."""
+    path = os.path.join(PROMPTS_DIR, f"{name}.md")
+    with open(path, "r", encoding="utf-8") as f:
+        return f.read()
+
+
+def build_analysis_prompt(
+    template_name: str,
+    teacher_name: str,
+    data: dict,
+) -> str:
+    """Build a complete analysis prompt by filling template with collected data."""
+    template = load_prompt(template_name)
+
+    entity_info = ""
+    if data.get("entity"):
+        e = data["entity"]
+        entity_info = f"名称: {e.get('name_zh', teacher_name)}\n"
+        entity_info += f"类型: {e.get('entity_type', '未知')}\n"
+        if e.get("description"):
+            entity_info += f"描述: {e['description']}\n"
+        if e.get("properties"):
+            for k, v in e["properties"].items():
+                entity_info += f"{k}: {v}\n"
+
+    lineage_info = ""
+    for rel in data.get("lineage", []):
+        lineage_info += f"- {rel['predicate']}: {rel.get('target_name', '未知')}\n"
+
+    texts_info = ""
+    for t in data.get("texts", [])[:20]:
+        texts_info += f"- 《{t.get('title_zh', '未知')}》({t.get('cbeta_id', '')})\n"
+
+    content_samples = ""
+    for sample in data.get("content_samples", []):
+        content_samples += f"\n### 《{sample['title']}》\n{sample['content'][:2000]}\n"
+
+    terms_info = ""
+    for term in data.get("terms", [])[:30]:
+        terms_info += f"- {term.get('headword', '')}: {term.get('definition', '')[:100]}\n"
+
+    prompt = template.replace("{teacher_name}", teacher_name)
+    prompt = prompt.replace("{entity_info}", entity_info)
+    prompt = prompt.replace("{lineage_info}", lineage_info)
+    prompt = prompt.replace("{texts_info}", texts_info)
+    prompt = prompt.replace("{content_samples}", content_samples)
+    prompt = prompt.replace("{terms_info}", terms_info)
+
+    return prompt
+
+
+def build_teacher_prompt(
+    template_name: str,
+    teacher_name: str,
+    analysis_result: str,
+) -> str:
+    """Build a generation prompt from analysis results."""
+    template = load_prompt(template_name)
+    prompt = template.replace("{teacher_name}", teacher_name)
+    prompt = prompt.replace("{analysis_result}", analysis_result)
+    return prompt
+
+
+def generate_teacher_skill(
+    name: str,
+    tradition: str,
+    school: str,
+    era: str,
+    languages: list,
+    teaching_content: str,
+    voice_content: str,
+    output_dir: str = "teachers",
+    fojin_entity_id: Optional[str] = None,
+    sources: Optional[list] = None,
+) -> str:
+    """Write the final teacher skill to disk."""
+    base_dir = os.path.join(
+        os.path.dirname(os.path.dirname(os.path.abspath(__file__))), output_dir
+    )
+    return create_teacher(
+        base_dir=base_dir,
+        name=name,
+        tradition=tradition,
+        school=school,
+        era=era,
+        languages=languages,
+        teaching_content=teaching_content,
+        voice_content=voice_content,
+        fojin_entity_id=fojin_entity_id,
+        sources=sources,
+    )