diff --git a/main.py b/main.py
index ccf0c33..9224067 100644
--- a/main.py
+++ b/main.py
@@ -75,12 +75,14 @@ async def fastapi_copy_project(source: str, target: str):
     return True
 
 @app.post("/readinp/")
-async def fastapi_read_inp(network: str, inp: str) -> None:
-    return read_inp(network, inp)
+async def fastapi_read_inp(network: str, inp: str) -> bool:
+    read_inp(network, inp)
+    return True
 
 @app.get("/dumpinp/")
-async def fastapi_dump_inp(network: str, inp: str) -> None:
-    return dump_inp(network, inp)
+async def fastapi_dump_inp(network: str, inp: str) -> bool:
+    dump_inp(network, inp)
+    return True
 
 # 必须用这个PlainTextResponse，不然每个key都有引号
 @app.get("/runproject/", response_class = PlainTextResponse)
@@ -138,6 +140,10 @@ def fastapi_take_snapshot(network: str, tag: str) -> int | None:
 def fastapi_pick_snapshot(network: str, tag: str, discard: bool = False) -> ChangeSet:
     return pick_snapshot(network, tag, discard)
 
+@app.post('/pickoperation/')
+async def fastapi_pick_operation(network: str, operation: int, discard: bool = False) -> ChangeSet:
+    return pick_operation(network, operation, discard)
+
 @app.get("/syncwithserver/")
 async def fastapi_sync_with_server(network: str, operationid: int) -> ChangeSet:
     return sync_with_server(network, operationid)