diff --git a/server/app.py b/server/app.py
new file mode 100644
index 0000000..5c55183
--- /dev/null
+++ b/server/app.py
@@ -0,0 +1,11 @@
+from fastapi import FastAPI
+
+from .routes import files, stream, markers, export, hidden
+
+app = FastAPI(title="8-cut Server")
+
+app.include_router(files.router, prefix="/api")
+app.include_router(stream.router, prefix="/api")
+app.include_router(markers.router, prefix="/api")
+app.include_router(export.router, prefix="/api")
+app.include_router(hidden.router, prefix="/api")
diff --git a/server/routes/__init__.py b/server/routes/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/server/routes/export.py b/server/routes/export.py
new file mode 100644
index 0000000..af9233c
--- /dev/null
+++ b/server/routes/export.py
@@ -0,0 +1,3 @@
+from fastapi import APIRouter
+
+router = APIRouter()
diff --git a/server/routes/files.py b/server/routes/files.py
new file mode 100644
index 0000000..0ec9a36
--- /dev/null
+++ b/server/routes/files.py
@@ -0,0 +1,48 @@
+import os
+
+from fastapi import APIRouter, Query
+from fastapi.responses import FileResponse
+
+from ..config import MEDIA_DIRS, VIDEO_EXTENSIONS
+
+router = APIRouter()
+
+
+def _scan_videos(root: str) -> list[dict]:
+    results = []
+    for dirpath, _, filenames in os.walk(root):
+        for f in sorted(filenames):
+            if os.path.splitext(f)[1].lower() in VIDEO_EXTENSIONS:
+                full = os.path.join(dirpath, f)
+                rel = os.path.relpath(full, root)
+                results.append({
+                    "name": f,
+                    "path": rel,
+                    "root": root,
+                    "size": os.path.getsize(full),
+                })
+    return results
+
+
+@router.get("/files")
+def list_files(root: str | None = Query(None)):
+    dirs = [root] if root and root in MEDIA_DIRS else MEDIA_DIRS
+    files = []
+    for d in dirs:
+        files.extend(_scan_videos(d))
+    return files
+
+
+@router.get("/roots")
+def list_roots():
+    return MEDIA_DIRS
+
+
+@router.get("/video/{path:path}")
+def serve_video(path: str, root: str = Query(...)):
+    if root not in MEDIA_DIRS:
+        return {"error": "invalid root"}
+    full = os.path.join(root, path)
+    if not os.path.isfile(full):
+        return {"error": "not found"}
+    return FileResponse(full, media_type="video/mp4")
diff --git a/server/routes/hidden.py b/server/routes/hidden.py
new file mode 100644
index 0000000..af9233c
--- /dev/null
+++ b/server/routes/hidden.py
@@ -0,0 +1,3 @@
+from fastapi import APIRouter
+
+router = APIRouter()
diff --git a/server/routes/markers.py b/server/routes/markers.py
new file mode 100644
index 0000000..af9233c
--- /dev/null
+++ b/server/routes/markers.py
@@ -0,0 +1,3 @@
+from fastapi import APIRouter
+
+router = APIRouter()
diff --git a/server/routes/stream.py b/server/routes/stream.py
new file mode 100644
index 0000000..af9233c
--- /dev/null
+++ b/server/routes/stream.py
@@ -0,0 +1,3 @@
+from fastapi import APIRouter
+
+router = APIRouter()