diff --git a/modules/transcription/__init__.py b/modules/transcription/__init__.py
new file mode 100644
index 0000000..64e2107
--- /dev/null
+++ b/modules/transcription/__init__.py
@@ -0,0 +1 @@
+# Transcription module for Classroom Copilot
diff --git a/modules/transcription/llm_client.py b/modules/transcription/llm_client.py
new file mode 100644
index 0000000..98ce96b
--- /dev/null
+++ b/modules/transcription/llm_client.py
@@ -0,0 +1,53 @@
+"""Pluggable LLM client for transcription summaries.
+
+Phase 1: Stub implementation — returns TODO string.
+Phase 3: Wire up Anthropic, OpenAI, and Ollama providers.
+"""
+
+import os
+from typing import Optional
+
+
+async def call_llm(
+    provider: str,
+    model: str,
+    api_key: str,
+    system_prompt: str,
+    user_message: str,
+) -> str:
+    """Call an LLM to generate a summary.
+
+    Phase 1 stub — returns a TODO string.
+    Phase 3 will implement actual provider routing.
+
+    Args:
+        provider: 'anthropic', 'openai', 'ollama', 'openrouter', 'google'
+        model: Model name (e.g. 'claude-sonnet-4-6', 'gpt-4o', 'llama3')
+        api_key: User's API key (from localStorage, passed per-request)
+        system_prompt: System prompt template (already filled with transcript)
+        user_message: User message content
+
+    Returns:
+        LLM-generated summary text
+    """
+    # Phase 1 stub — TODO: implement in Phase 3
+    return f"[TODO: Implement LLM call for provider={provider}, model={model}]"
+
+
+async def call_anthropic(api_key: str, model: str, system_prompt: str, user_message: str) -> str:
+    """Call Anthropic Claude API."""
+    # Phase 3 implementation placeholder
+    return f"[TODO: Anthropic call — model={model}]"
+
+
+async def call_openai(api_key: str, model: str, system_prompt: str, user_message: str) -> str:
+    """Call OpenAI API."""
+    # Phase 3 implementation placeholder
+    return f"[TODO: OpenAI call — model={model}]"
+
+
+async def call_ollama(api_key: str, model: str, system_prompt: str, user_message: str) -> str:
+    """Call local Ollama instance."""
+    # Phase 3 implementation placeholder
+    ollama_url = os.getenv("OLLAMA_URL", "https://ollama.kevlarai.com")
+    return f"[TODO: Ollama call — url={ollama_url}, model={model}]"
diff --git a/modules/transcription/models.py b/modules/transcription/models.py
new file mode 100644
index 0000000..825085f
--- /dev/null
+++ b/modules/transcription/models.py
@@ -0,0 +1,208 @@
+"""Pydantic models for the Transcription system."""
+
+from pydantic import BaseModel, Field
+from typing import Optional, List
+from datetime import datetime
+
+
+# --- Session Models ---
+
+class TranscriptionSessionCreate(BaseModel):
+    user_id: str
+    title: Optional[str] = None
+    canvas_type: str = "teaching-canvas"
+
+
+class TranscriptionSessionUpdate(BaseModel):
+    title: Optional[str] = None
+    ended_at: Optional[datetime] = None
+    timetable_period_id: Optional[str] = None
+    timetable_event_type: Optional[str] = None
+    timetable_event_label: Optional[str] = None
+    auto_tagged: Optional[bool] = None
+    llm_provider: Optional[str] = None
+    llm_model: Optional[str] = None
+
+
+class TranscriptionSessionResponse(BaseModel):
+    id: str
+    user_id: str
+    title: Optional[str] = None
+    canvas_type: str
+    started_at: datetime
+    ended_at: Optional[datetime] = None
+    duration_seconds: Optional[int] = None
+    timetable_period_id: Optional[str] = None
+    timetable_event_type: Optional[str] = None
+    timetable_event_label: Optional[str] = None
+    auto_tagged: bool = False
+    llm_provider: Optional[str] = None
+    llm_model: Optional[str] = None
+    word_count: int = 0
+    segment_count: int = 0
+    metadata: dict = {}
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class SessionListResponse(BaseModel):
+    sessions: List[TranscriptionSessionResponse]
+    total: int
+    page: int
+    page_size: int
+
+
+# --- Segment Models ---
+
+class TranscriptionSegmentCreate(BaseModel):
+    session_id: str
+    sequence_index: int
+    text: str
+    start_seconds: float
+    end_seconds: float
+    is_final: bool = True
+    speaker_label: Optional[str] = None
+    keyword_matches: Optional[List[str]] = None
+
+
+class TranscriptionSegmentResponse(BaseModel):
+    id: str
+    session_id: str
+    sequence_index: int
+    text: str
+    start_seconds: float
+    end_seconds: float
+    is_final: bool = True
+    speaker_label: Optional[str] = None
+    keyword_matches: Optional[List[str]] = None
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+# --- Canvas Event Models ---
+
+class CanvasEventCreate(BaseModel):
+    session_id: Optional[str] = None
+    user_id: str
+    timestamp: Optional[datetime] = None
+    session_elapsed_seconds: Optional[float] = None
+    event_type: str
+    event_payload: dict = {}
+    canvas_snapshot_url: Optional[str] = None
+    tldraw_page_id: Optional[str] = None
+    tldraw_shape_ids: Optional[List[str]] = None
+
+
+class CanvasEventResponse(BaseModel):
+    id: str
+    session_id: Optional[str] = None
+    user_id: str
+    timestamp: datetime
+    session_elapsed_seconds: Optional[float] = None
+    event_type: str
+    event_payload: dict = {}
+    canvas_snapshot_url: Optional[str] = None
+    tldraw_page_id: Optional[str] = None
+    tldraw_shape_ids: Optional[List[str]] = None
+
+    class Config:
+        from_attributes = True
+
+
+# --- Summary Models ---
+
+class SummaryGenerateRequest(BaseModel):
+    summary_type: str  # full_lesson, questions_asked, teaching_style, key_moments, segment
+    provider: str  # anthropic, openai, ollama, openrouter, google
+    model: str
+    api_key: str  # from frontend user settings, passed per-request
+    segment_range: Optional[List[Optional[int]]] = None  # [start, end], null = all
+    include_canvas_snapshots: bool = False
+
+
+class SummaryResponse(BaseModel):
+    id: str
+    session_id: str
+    user_id: str
+    summary_type: str
+    content: str
+    prompt_used: Optional[str] = None
+    llm_provider: str
+    llm_model: str
+    input_tokens: Optional[int] = None
+    output_tokens: Optional[int] = None
+    segment_range_start: Optional[int] = None
+    segment_range_end: Optional[int] = None
+    canvas_snapshot_urls: Optional[List[str]] = None
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+# --- Keyword Watch Models ---
+
+class KeywordWatchCreate(BaseModel):
+    user_id: str
+    keyword: str
+    match_type: str = "contains"  # contains, exact, starts_with, regex
+    action: str = "log"  # log, alert, canvas_shape, webhook
+
+
+class KeywordWatchResponse(BaseModel):
+    id: str
+    user_id: str
+    keyword: str
+    match_type: str = "contains"
+    action: str = "log"
+    is_active: bool = True
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+# --- Keyword Event Models ---
+
+class KeywordEventCreate(BaseModel):
+    session_id: str
+    segment_id: Optional[str] = None
+    keyword_watch_id: Optional[str] = None
+    keyword_text: str
+    matched_in_text: str
+    session_elapsed_seconds: Optional[float] = None
+
+
+class KeywordEventResponse(BaseModel):
+    id: str
+    session_id: str
+    segment_id: Optional[str] = None
+    keyword_watch_id: Optional[str] = None
+    keyword_text: str
+    matched_in_text: str
+    session_elapsed_seconds: Optional[float] = None
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+# --- Export Models ---
+
+class ExportFormat(BaseModel):
+    format: str  # srt, txt, json
+
+
+# --- Timetable Models ---
+
+class CurrentPeriodResponse(BaseModel):
+    period_id: Optional[str] = None
+    event_type: Optional[str] = None
+    event_label: Optional[str] = None
+    start_time: Optional[datetime] = None
+    end_time: Optional[datetime] = None
diff --git a/modules/transcription/prompts.py b/modules/transcription/prompts.py
new file mode 100644
index 0000000..069202f
--- /dev/null
+++ b/modules/transcription/prompts.py
@@ -0,0 +1,51 @@
+"""LLM prompt templates for transcription summaries."""
+
+FULL_LESSON = """You are an expert educational analyst. Below is a transcript of a lesson. Provide a structured summary including:
+1. Main topics covered (with estimated time on each)
+2. Key teaching moments
+3. Notable observations about pacing and engagement
+4. Suggestions for improvement
+
+Transcript:
+{transcript}"""
+
+QUESTIONS_ASKED = """You are an expert educational analyst. Extract all questions asked by the teacher from this lesson transcript. For each question:
+1. Quote the exact question
+2. Categorize by type: open/closed
+3. Identify Bloom's taxonomy level (Remember, Understand, Apply, Analyze, Evaluate, Create)
+4. Note any subject-specific content
+
+Transcript:
+{transcript}"""
+
+TEACHING_STYLE = """You are an expert educational analyst. Analyse this lesson transcript for teaching style. Comment on:
+1. Pacing — was the lesson well-paced? Where did it drag or rush?
+2. Questioning technique — variety, depth, follow-up
+3. Explanation clarity — were concepts explained effectively?
+4. Student engagement indicators (changes in tone, pauses for responses)
+5. Suggestions for improvement
+
+Transcript:
+{transcript}"""
+
+KEY_MOMENTS = """You are an expert educational analyst. Identify the most significant moments in this lesson:
+1. Topic transitions (with timestamps)
+2. Student interactions (marked by change in tone or pause)
+3. Key explanations that seemed to land well
+4. Any moments of confusion or breakthrough
+
+Transcript:
+{transcript}"""
+
+SEGMENT = """Summarise this portion of the lesson in 2-3 sentences suitable for a lesson log entry.
+
+Transcript:
+{transcript}"""
+
+PROMPT_TEMPLATES = {
+    "full_lesson": FULL_LESSON,
+    "questions_asked": QUESTIONS_ASKED,
+    "teaching_style": TEACHING_STYLE,
+    "key_moments": KEY_MOMENTS,
+    "segment": SEGMENT,
+}
diff --git a/routers/database/init/timetables.py b/routers/database/init/timetables.py
index 5fd53fe..b5e0000 100644
--- a/routers/database/init/timetables.py
+++ b/routers/database/init/timetables.py
@@ -161,4 +161,14 @@ async def process_worker_timetable(file_content, user_node_data, worker_node_dat
         raise
     finally:
         logging.info(f"Closing driver for {worker_node_data['worker_db_name']}")
-        driver.close_driver(neo_driver)
\ No newline at end of file
+        driver.close_driver(neo_driver)
+@router.get("/current-period")
+async def get_current_period(user_id: str = ""):
+    # Phase 1: return stub — TODO: implement Neo4j query in Phase 2
+    return {
+        "period_id": None,
+        "event_type": None,
+        "event_label": None,
+        "start_time": None,
+        "end_time": None,
+    }
diff --git a/routers/transcribe/canvas_events.py b/routers/transcribe/canvas_events.py
new file mode 100644
index 0000000..a5cd65b
--- /dev/null
+++ b/routers/transcribe/canvas_events.py
@@ -0,0 +1,63 @@
+"""Canvas events router — batch write and query canvas event logs."""
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from typing import List, Optional
+from datetime import datetime
+
+from modules.auth.supabase_bearer import SupabaseBearer
+from modules.transcription.models import CanvasEventCreate, CanvasEventResponse
+
+router = APIRouter()
+
+
+def get_supabase_client():
+    """Get Supabase service role client."""
+    from modules.database.supabase.utils.client import SupabaseServiceRoleClient
+    return SupabaseServiceRoleClient()
+
+
+def get_user_id(credentials=Depends(SupabaseBearer())) -> str:
+    """Extract user_id from Supabase JWT token."""
+    return credentials.get("sub", credentials.get("user_id", ""))
+
+
+@router.post("/canvas-events")
+async def batch_write_canvas_events(
+    events: List[CanvasEventCreate],
+    user_id: str = Depends(get_user_id),
+):
+    """Batch write canvas events."""
+    supabase = get_supabase_client()
+    
+    # Filter events to only this user's
+    user_events = [e for e in events if e.user_id == user_id]
+    
+    if not user_events:
+        return {"message": "No events to write", "count": 0}
+    
+    event_data = [e.model_dump() for e in user_events]
+    
+    result = supabase.supabase.table("canvas_events").insert(event_data).execute()
+    
+    return {"message": f"Wrote {len(event_data)} events", "count": len(event_data)}
+
+
+@router.get("/canvas-events", response_model=List[CanvasEventResponse])
+async def get_canvas_events(
+    session_id: Optional[str] = Query(None),
+    user_id: str = Depends(get_user_id),
+    limit: int = Query(100, ge=1, le=1000),
+):
+    """Get canvas events for a session or user."""
+    supabase = get_supabase_client()
+    
+    query = supabase.supabase.table("canvas_events").select("*").eq("user_id", user_id)
+    
+    if session_id:
+        query = query.eq("session_id", session_id)
+    
+    query = query.order("timestamp", desc=True).limit(limit)
+    
+    result = query.execute()
+    
+    return result.data
diff --git a/routers/transcribe/keywords.py b/routers/transcribe/keywords.py
new file mode 100644
index 0000000..aaa3a43
--- /dev/null
+++ b/routers/transcribe/keywords.py
@@ -0,0 +1,102 @@
+"""Keyword watches router — CRUD for keyword watch rules and events."""
+
+from fastapi import APIRouter, Depends, HTTPException
+from typing import List
+
+from modules.auth.supabase_bearer import SupabaseBearer
+from modules.transcription.models import (
+    KeywordWatchCreate,
+    KeywordWatchResponse,
+    KeywordEventCreate,
+    KeywordEventResponse,
+)
+
+router = APIRouter()
+
+
+def get_supabase_client():
+    """Get Supabase service role client."""
+    from modules.database.supabase.utils.client import SupabaseServiceRoleClient
+    return SupabaseServiceRoleClient()
+
+
+def get_user_id(credentials=Depends(SupabaseBearer())) -> str:
+    """Extract user_id from Supabase JWT token."""
+    return credentials.get("sub", credentials.get("user_id", ""))
+
+
+@router.get("/keywords", response_model=List[KeywordWatchResponse])
+async def list_keyword_watches(
+    user_id: str = Depends(get_user_id),
+):
+    """List user's keyword watches."""
+    supabase = get_supabase_client()
+    
+    result = supabase.supabase.table("keyword_watches").select("*").eq("user_id", user_id).execute()
+    
+    return result.data
+
+
+@router.post("/keywords", response_model=KeywordWatchResponse)
+async def create_keyword_watch(
+    watch: KeywordWatchCreate,
+    user_id: str = Depends(get_user_id),
+):
+    """Create a keyword watch."""
+    supabase = get_supabase_client()
+    
+    data = {
+        "user_id": user_id,
+        "keyword": watch.keyword.lower(),  # Store lowercase for case-insensitive matching
+        "match_type": watch.match_type,
+        "action": watch.action,
+    }
+    
+    result = supabase.supabase.table("keyword_watches").insert(data).execute()
+    
+    if not result.data:
+        raise HTTPException(status_code=500, detail="Failed to create keyword watch")
+    
+    return result.data[0]
+
+
+@router.delete("/keywords/{watch_id}")
+async def delete_keyword_watch(
+    watch_id: str,
+    user_id: str = Depends(get_user_id),
+):
+    """Delete a keyword watch."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    existing = supabase.supabase.table("keyword_watches").select("*").eq("id", watch_id).eq("user_id", user_id).execute()
+    
+    if not existing.data:
+        raise HTTPException(status_code=404, detail="Keyword watch not found")
+    
+    supabase.supabase.table("keyword_watches").delete().eq("id", watch_id).execute()
+    
+    return {"message": "Keyword watch deleted"}
+
+
+@router.post("/keywords/events")
+async def log_keyword_event(
+    event: KeywordEventCreate,
+    user_id: str = Depends(get_user_id),
+):
+    """Log a keyword event (triggered when a watch matches)."""
+    supabase = get_supabase_client()
+    
+    # Verify session ownership
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", event.session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    data = event.model_dump()
+    result = supabase.supabase.table("keyword_events").insert(data).execute()
+    
+    if not result.data:
+        raise HTTPException(status_code=500, detail="Failed to log keyword event")
+    
+    return result.data[0]
diff --git a/routers/transcribe/sessions.py b/routers/transcribe/sessions.py
new file mode 100644
index 0000000..7952395
--- /dev/null
+++ b/routers/transcribe/sessions.py
@@ -0,0 +1,293 @@
+"""Transcription sessions router — CRUD endpoints for transcription sessions and segments."""
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from typing import Optional, List
+from datetime import datetime
+
+from modules.auth.supabase_bearer import SupabaseBearer
+from modules.transcription.models import (
+    TranscriptionSessionCreate,
+    TranscriptionSessionUpdate,
+    TranscriptionSessionResponse,
+    SessionListResponse,
+    TranscriptionSegmentCreate,
+    TranscriptionSegmentResponse,
+    SummaryGenerateRequest,
+    SummaryResponse,
+    ExportFormat,
+)
+
+router = APIRouter()
+
+
+def get_supabase_client():
+    """Get Supabase service role client."""
+    from modules.database.supabase.utils.client import SupabaseServiceRoleClient
+    return SupabaseServiceRoleClient()
+
+
+def get_user_id(credentials=Depends(SupabaseBearer())) -> str:
+    """Extract user_id from Supabase JWT token."""
+    return credentials.get("sub", credentials.get("user_id", ""))
+
+
+@router.post("/sessions", response_model=TranscriptionSessionResponse)
+async def create_session(
+    session_data: TranscriptionSessionCreate,
+    user_id: str = Depends(get_user_id),
+):
+    """Create a new transcription session."""
+    supabase = get_supabase_client()
+    
+    data = {
+        "user_id": user_id,
+        "title": session_data.title,
+        "canvas_type": session_data.canvas_type,
+    }
+    
+    result = supabase.supabase.table("transcription_sessions").insert(data).execute()
+    
+    if not result.data:
+        raise HTTPException(status_code=500, detail="Failed to create session")
+    
+    return result.data[0]
+
+
+@router.patch("/sessions/{session_id}", response_model=TranscriptionSessionResponse)
+async def update_session(
+    session_id: str,
+    update_data: TranscriptionSessionUpdate,
+    user_id: str = Depends(get_user_id),
+):
+    """Update a transcription session (end, tag, title)."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    existing = supabase.supabase.table("transcription_sessions").select("*").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not existing.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Build update dict (only non-None fields)
+    updates = {k: v for k, v in update_data.model_dump().items() if v is not None}
+    updates["updated_at"] = datetime.utcnow().isoformat()
+    
+    result = supabase.supabase.table("transcription_sessions").update(updates).eq("id", session_id).execute()
+    
+    if not result.data:
+        raise HTTPException(status_code=500, detail="Failed to update session")
+    
+    return result.data[0]
+
+
+@router.get("/sessions", response_model=SessionListResponse)
+async def list_sessions(
+    user_id: str = Depends(get_user_id),
+    page: int = Query(1, ge=1),
+    page_size: int = Query(20, ge=1, le=100),
+    timetable_period_id: Optional[str] = None,
+):
+    """List transcription sessions for the current user (paginated)."""
+    supabase = get_supabase_client()
+    
+    query = supabase.supabase.table("transcription_sessions").select("*", count="exact").eq("user_id", user_id)
+    
+    if timetable_period_id:
+        query = query.eq("timetable_period_id", timetable_period_id)
+    
+    query = query.order("started_at", desc=True).range((page - 1) * page_size, page * page_size - 1)
+    
+    result = query.execute()
+    
+    return SessionListResponse(
+        sessions=result.data,
+        total=result.count or 0,
+        page=page,
+        page_size=page_size,
+    )
+
+
+@router.get("/sessions/{session_id}", response_model=dict)
+async def get_session(
+    session_id: str,
+    user_id: str = Depends(get_user_id),
+):
+    """Get a session with its segments and summaries."""
+    supabase = get_supabase_client()
+    
+    # Get session
+    session_result = supabase.supabase.table("transcription_sessions").select("*").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_result.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Get segments
+    segments_result = supabase.supabase.table("transcription_segments").select("*").eq("session_id", session_id).order("sequence_index").execute()
+    
+    # Get summaries
+    summaries_result = supabase.supabase.table("transcription_summaries").select("*").eq("session_id", session_id).execute()
+    
+    return {
+        "session": session_result.data[0],
+        "segments": segments_result.data,
+        "summaries": summaries_result.data,
+    }
+
+
+@router.delete("/sessions/{session_id}")
+async def delete_session(
+    session_id: str,
+    user_id: str = Depends(get_user_id),
+):
+    """Soft delete a transcription session."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    existing = supabase.supabase.table("transcription_sessions").select("*").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not existing.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Soft delete: set ended_at and mark metadata
+    result = supabase.supabase.table("transcription_sessions").update({
+        "ended_at": datetime.utcnow().isoformat(),
+        "metadata": {"deleted": True},
+    }).eq("id", session_id).execute()
+    
+    return {"message": "Session deleted"}
+
+
+@router.post("/sessions/{session_id}/segments")
+async def upsert_segments(
+    session_id: str,
+    segments: List[TranscriptionSegmentCreate],
+    user_id: str = Depends(get_user_id),
+):
+    """Batch upsert segments for a session."""
+    supabase = get_supabase_client()
+    
+    # Verify session exists and user owns it
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Batch insert segments
+    segment_data = [s.model_dump() for s in segments]
+    
+    if segment_data:
+        result = supabase.supabase.table("transcription_segments").insert(segment_data).execute()
+        
+        # Update segment count on session
+        supabase.supabase.table("transcription_sessions").update({
+            "segment_count": len(segment_data),
+        }).eq("id", session_id).execute()
+    
+    return {"message": f"Upserted {len(segment_data)} segments", "count": len(segment_data)}
+
+
+@router.get("/sessions/{session_id}/segments", response_model=List[TranscriptionSegmentResponse])
+async def list_segments(
+    session_id: str,
+    user_id: str = Depends(get_user_id),
+):
+    """List all segments for a session."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    result = supabase.supabase.table("transcription_segments").select("*").eq("session_id", session_id).order("sequence_index").execute()
+    
+    return result.data
+
+
+@router.post("/sessions/{session_id}/summaries", response_model=SummaryResponse)
+async def generate_summary(
+    session_id: str,
+    summary_request: SummaryGenerateRequest,
+    user_id: str = Depends(get_user_id),
+):
+    """Generate a summary for a session (Phase 1 stub)."""
+    supabase = get_supabase_client()
+    
+    # Verify session exists and user owns it
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Phase 1 stub: TODO implement LLM call in Phase 3
+    content = "[TODO: Generate summary via LLM — provider={}, model={}]".format(
+        summary_request.provider, summary_request.model
+    )
+    
+    # Save summary to database
+    summary_data = {
+        "session_id": session_id,
+        "user_id": user_id,
+        "summary_type": summary_request.summary_type,
+        "content": content,
+        "llm_provider": summary_request.provider,
+        "llm_model": summary_request.model,
+    }
+    
+    result = supabase.supabase.table("transcription_summaries").insert(summary_data).execute()
+    
+    if not result.data:
+        raise HTTPException(status_code=500, detail="Failed to save summary")
+    
+    return result.data[0]
+
+
+@router.get("/sessions/{session_id}/summaries", response_model=List[SummaryResponse])
+async def list_summaries(
+    session_id: str,
+    user_id: str = Depends(get_user_id),
+):
+    """List summaries for a session."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    result = supabase.supabase.table("transcription_summaries").select("*").eq("session_id", session_id).execute()
+    
+    return result.data
+
+
+@router.post("/sessions/{session_id}/export")
+async def export_session(
+    session_id: str,
+    export_format: ExportFormat,
+    user_id: str = Depends(get_user_id),
+):
+    """Export session as SRT, TXT, or JSON (Phase 1 stub)."""
+    supabase = get_supabase_client()
+    
+    # Verify ownership
+    session_check = supabase.supabase.table("transcription_sessions").select("id").eq("id", session_id).eq("user_id", user_id).execute()
+    
+    if not session_check.data:
+        raise HTTPException(status_code=404, detail="Session not found")
+    
+    # Get segments
+    segments_result = supabase.supabase.table("transcription_segments").select("*").eq("session_id", session_id).order("sequence_index").execute()
+    segments = segments_result.data
+    
+    if export_format.format == "srt":
+        # Phase 1 stub — implement in Phase 3
+        return {"format": "srt", "content": "[TODO: Generate SRT from segments]"}
+    elif export_format.format == "txt":
+        text = "\n".join(s["text"] for s in segments)
+        return {"format": "txt", "content": text}
+    elif export_format.format == "json":
+        return {"format": "json", "content": {"segments": segments}}
+    else:
+        raise HTTPException(status_code=400, detail=f"Unsupported format: {export_format.format}")
diff --git a/routers/transcribe/utterance.py b/routers/transcribe/utterance.py
index dd3678e..b27efa9 100644
--- a/routers/transcribe/utterance.py
+++ b/routers/transcribe/utterance.py
@@ -1,24 +1,31 @@
-from fastapi import APIRouter, Request
+"""DEPRECATED - utterance.py
+
+This module is deprecated. All transcription data now goes through
+the new sessions router at /transcribe/sessions.
+
+The old endpoints are kept for backwards compatibility but will be
+removed in a future release. New integrations should use:
+  POST /transcribe/sessions          - create session
+  POST /transcribe/sessions/{id}/segments - batch upsert segments
+"""
+
+from fastapi import APIRouter, Request, HTTPException
 import os
-import queue
-from dotenv import load_dotenv
 import json
 
-load_dotenv()
+router = APIRouter(deprecated=True)
 
-router = APIRouter()
 
 @router.post("/handle_whisper_live_eos_utterance/{user_id}")
 async def handle_whisper_live_eos_utterance(user_id: str, request: Request):
+    """DEPRECATED - Use POST /transcribe/sessions instead."""
     data = await request.json()
-    utterance = data.get("utterance")
-    print(f"Utterance: {utterance}")
-    start = data.get("start")
-    end = data.get("end")
-    print(f"Start: {start}")
-    print(f"End: {end}")
-    eos = data.get("eos")
-    print(f"Eos: {eos}")
+    
+    # Log deprecation warning
+    print(f"[DEPRECATED] /handle_whisper_live_eos_utterance called for user {user_id}. "
+          f"Please migrate to POST /transcribe/sessions/{{id}}/segments")
+    
+    # Keep writing to flat file for backwards compat
     user_dir = f"../../data/users/{user_id}/transcripts"
     if not os.path.exists(user_dir):
         os.makedirs(user_dir)
@@ -27,16 +34,21 @@ async def handle_whisper_live_eos_utterance(user_id: str, request: Request):
     with open(log_file, "a") as f:
         f.write(json.dumps(data) + "\n")
 
-    return {"message": "Utterance logged successfully"}
+    return {"message": "Utterance logged (deprecated - migrate to sessions API)", "_deprecated": True}
+
 
 @router.get("/get_utterances/{user_id}")
 async def get_utterances(user_id: str):
+    """DEPRECATED - Use GET /transcribe/sessions/{id}/segments instead."""
+    print(f"[DEPRECATED] /get_utterances called for user {user_id}. "
+          f"Please migrate to GET /transcribe/sessions/{{id}}/segments")
+    
     user_dir = f"../../data/users/{user_id}/transcripts"
     log_file = os.path.join(user_dir, "utterances.log")
     if not os.path.exists(log_file):
-        return {"utterances": []}
+        return {"utterances": [], "_deprecated": True}
 
     with open(log_file, "r") as f:
         utterances = [json.loads(line) for line in f]
 
-    return {"utterances": utterances}
+    return {"utterances": utterances, "_deprecated": True}
diff --git a/run/routers.py b/run/routers.py
index 00aa7d8..df6a442 100644
--- a/run/routers.py
+++ b/run/routers.py
@@ -26,6 +26,9 @@ from routers.dev.test_analysis import router as test_analysis_router
 from routers.queue_management import router as queue_management_router
 from routers.maintenance.redis_admin import router as redis_admin_router
 from routers import provisioning as provisioning_router
+from routers.transcribe.sessions import router as sessions_router
+from routers.transcribe.canvas_events import router as canvas_events_router
+from routers.transcribe.keywords import router as keywords_router
 
 def register_routes(app: FastAPI):
     logger.info("Starting to register routes...")
@@ -101,5 +104,10 @@ def register_routes(app: FastAPI):
     # Provisioning Routes
     app.include_router(provisioning_router.router)
 
+    # Transcription Routes (CIS Phase 1)
+    app.include_router(sessions_router, prefix="/transcribe", tags=["Transcription Sessions"])
+    app.include_router(canvas_events_router, prefix="/transcribe", tags=["Transcription Canvas Events"])
+    app.include_router(keywords_router, prefix="/transcribe", tags=["Transcription Keywords"])
+
     # Test Routes
     app.include_router(timetable_test.router, prefix="/tests", tags=["Tests"])