fix(cli): look up a deployment by exact name instead of a paged search

libs/cli/langgraph_cli/deploy.py

@@ -491,8 +491,8 @@ def _source_of(resource: object) -> str | None:
 def find_deployment_by_name(
     client: HostBackendClient, name: str
 ) -> ExistingDeployment | None:
-    for resource in client.list_deployments(name_contains=name):
-        if resource.get("name") == name and resource.get("id"):
+    for resource in client.list_deployments(name=name):
+        if resource.get("id"):
             return ExistingDeployment(str(resource["id"]), _source_of(resource))
     return None
 

libs/cli/langgraph_cli/host_backend.py

@@ -189,14 +189,13 @@ class HostBackendClient:
             payload["secrets"] = secrets
         return self._request("POST", "/v2/deployments", payload)
 
-    def list_deployments(self, name_contains: str = "") -> list[dict[str, Any]]:
-        return _resources(
-            self._request(
-                "GET",
-                "/v2/deployments",
-                params={"name_contains": name_contains},
-            )
+    def list_deployments(
+        self, *, name: str | None = None, name_contains: str | None = None
+    ) -> list[dict[str, Any]]:
+        params = (
+            {"name": name} if name is not None else {"name_contains": name_contains}
         )
+        return _resources(self._request("GET", "/v2/deployments", params=params))
 
     def list_listeners(self) -> list[dict[str, Any]]:
         return _resources(