diff --git a/app/api/memos.py b/app/api/memos.py
index a1b5316..9c43496 100644
--- a/app/api/memos.py
+++ b/app/api/memos.py
@@ -143,6 +143,11 @@ class MemoCreate(BaseModel):
     content: str
     title: str | None = None  # 선택적 제목 (없으면 첫 줄 자동 생성)
     ask_includable: bool = True
+    # PR-Hermes-Docsrv-Bridge-1: 외부 채널 진입점 식별. default='memo' (web UI 호환).
+    # 허용 값: memo / voice / hermes / ... (app/models/document.py source_channel enum).
+    source_channel: str | None = None
+    # PR-Hermes-Docsrv-Bridge-1: channel/user/message_id/timestamp 등 채널 메타.
+    source_metadata: dict | None = None
 
 
 class MemoUpdate(BaseModel):
@@ -175,7 +180,8 @@ class MemoResponse(BaseModel):
     # Memo Intake Upgrade PR-2B — AI 추천 분류 (사용자 1-click promote 의 hint)
     ai_event_kind: str | None = None
     ai_event_confidence: float | None = None
-    source_channel: str | None = None  # voice/memo 등 진입점 식별 (UI 배지)
+    source_channel: str | None = None  # voice/memo/hermes 등 진입점 식별 (UI 배지)
+    source_metadata: dict = {}  # PR-Hermes-Docsrv-Bridge-1: channel/user/message_id/timestamp
     file_type: str | None = None  # audio (voice 메모) vs note (text 메모)
     file_path: str | None = None  # voice 메모의 NAS audio 경로 (audio player 용)
     created_at: datetime
@@ -210,6 +216,7 @@ def _to_memo_response(doc: Document) -> MemoResponse:
         ai_event_kind=doc.ai_event_kind,
         ai_event_confidence=doc.ai_event_confidence,
         source_channel=doc.source_channel,
+        source_metadata=dict(doc.source_metadata or {}),
         file_type=doc.file_type,
         file_path=doc.file_path,
         created_at=doc.created_at,
@@ -231,6 +238,13 @@ async def create_memo(
     if not content:
         raise HTTPException(status_code=400, detail="메모 내용이 비어있습니다")
 
+    # PR-Hermes-Docsrv-Bridge-1: source_channel/metadata override 가능. default='memo' (기존 web UI 호환).
+    channel = body.source_channel or "memo"
+    if channel not in ("memo", "voice", "hermes"):
+        raise HTTPException(
+            status_code=400,
+            detail=f"source_channel '{channel}' 허용 안 됨 (memo/voice/hermes 만)",
+        )
     doc = Document(
         file_path=None,
         file_hash=_content_hash(content),
@@ -240,7 +254,8 @@ async def create_memo(
         title=body.title.strip() if body.title and body.title.strip() else _auto_title(content),
         extracted_text=content,
         review_status="approved",
-        source_channel="memo",
+        source_channel=channel,
+        source_metadata=body.source_metadata or {},
         user_tags=_parse_hashtags(content),
         pinned=False,
         archived=False,
@@ -273,9 +288,10 @@ async def list_memos(
     PR-2C: source_channel='voice' (음성 메모) 도 포함. 사용자 의도 = 메모는 모든 입력의 inbox.
     voice 메모는 file_type='immutable' + category='audio' + source_channel='voice' 패턴.
     source_channel 만으로 분리 (file_type 필터는 immutable 다른 binary 까지 끌어옴 — 회피).
+    PR-Hermes-Docsrv-Bridge-1: source_channel='hermes' (Hermes Discord 등 외부 채널 진입) 도 inbox 포함.
     """
     base = select(Document).where(
-        Document.source_channel.in_(("memo", "voice")),
+        Document.source_channel.in_(("memo", "voice", "hermes")),
         Document.deleted_at == None,  # noqa: E711
         Document.archived == archived,
     )
diff --git a/app/models/document.py b/app/models/document.py
index a7cd6df..cf6d3cc 100644
--- a/app/models/document.py
+++ b/app/models/document.py
@@ -104,9 +104,12 @@ class Document(Base):
     source_channel: Mapped[str | None] = mapped_column(
         Enum("law_monitor", "devonagent", "email", "web_clip",
              "tksafety", "inbox_route", "manual", "drive_sync", "news", "memo",
-             "voice",
+             "voice", "hermes",
              name="source_channel")
     )
+    # 외부 채널 (Hermes Discord 등) 의 channel/user/message_id/timestamp 메타.
+    # extract_meta (OCR 전용) 와 분리.
+    source_metadata: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
     data_origin: Mapped[str | None] = mapped_column(
         Enum("work", "external", name="data_origin")
     )
diff --git a/migrations/267_source_channel_hermes.sql b/migrations/267_source_channel_hermes.sql
new file mode 100644
index 0000000..62c4321
--- /dev/null
+++ b/migrations/267_source_channel_hermes.sql
@@ -0,0 +1,4 @@
+-- 2026-05-16 PR-Hermes-Docsrv-Bridge-1: source_channel enum 에 'hermes' 추가.
+-- Hermes Agent (Mac mini) 가 Discord 등 채널에서 받은 텍스트를 Document Server memo 로
+-- 저장할 때 source_channel='hermes' 로 표시. 기존 'memo'/'voice' 와 동등 inbox 진입점.
+ALTER TYPE source_channel ADD VALUE IF NOT EXISTS 'hermes';
diff --git a/migrations/268_documents_source_metadata.sql b/migrations/268_documents_source_metadata.sql
new file mode 100644
index 0000000..9958fbf
--- /dev/null
+++ b/migrations/268_documents_source_metadata.sql
@@ -0,0 +1,5 @@
+-- 2026-05-16 PR-Hermes-Docsrv-Bridge-1: documents.source_metadata jsonb 컬럼 추가.
+-- 외부 채널 (Hermes Discord 등) 에서 들어온 입력의 channel/user/message_id/timestamp
+-- 메타데이터 보존. 기존 extract_meta (OCR 전용) 와 분리 — semantically 다른 도메인.
+-- DEFAULT '{}'::jsonb 라 백필 X, 빠른 ADD COLUMN.
+ALTER TABLE documents ADD COLUMN IF NOT EXISTS source_metadata jsonb DEFAULT '{}'::jsonb NOT NULL;