diff --git a/js/src/types/modcdp.ts b/js/src/types/modcdp.ts
index 09476c69..44f3ef81 100644
--- a/js/src/types/modcdp.ts
+++ b/js/src/types/modcdp.ts
@@ -143,12 +143,20 @@ export const ModCDPAddMiddlewareParamsSchema = z.object({
 });
 export type ModCDPAddMiddlewareParams = z.infer<typeof ModCDPAddMiddlewareParamsSchema>;
 
-export const ModCDPLauncherOptionsSchema = z.object({}).passthrough();
+export const ModCDPLauncherOptionsSchema = z
+  .object({
+    launcher_mode: z.enum(["local", "remote", "bb", "none"]).optional(),
+    launcher_executable_path: z.string().nullable().optional(),
+    launcher_user_data_dir: z.string().nullable().optional(),
+    launcher_options: z.record(z.string(), z.unknown()).optional(),
+  })
+  .passthrough();
 export type ModCDPLauncherOptions = z.infer<typeof ModCDPLauncherOptionsSchema>;
 
 export const ModCDPUpstreamOptionsSchema = z
   .object({
     upstream_mode: z.enum(["ws", "pipe", "nativemessaging", "reversews", "nats"]).optional(),
+    upstream_cdp_url: z.string().nullable().optional(),
     upstream_nats_url: z.string().nullable().optional(),
     upstream_nats_subject_prefix: z.string().nullable().optional(),
     upstream_nats_wait_timeout_ms: z.number().positive().optional(),
@@ -158,6 +166,7 @@ export const ModCDPUpstreamOptionsSchema = z
     upstream_nativemessaging_manifests: z.array(z.string()).nullable().optional(),
     upstream_nativemessaging_host_name: z.string().nullable().optional(),
     upstream_nativemessaging_wait_timeout_ms: z.number().positive().optional(),
+    upstream_ws_connect_error_settle_timeout_ms: z.number().positive().optional(),
   })
   .passthrough();
 export type ModCDPUpstreamOptions = z.infer<typeof ModCDPUpstreamOptionsSchema>;
diff --git a/python/modcdp/client/ModCDPClient.py b/python/modcdp/client/ModCDPClient.py
index f34d364f..2ed3120c 100644
--- a/python/modcdp/client/ModCDPClient.py
+++ b/python/modcdp/client/ModCDPClient.py
@@ -64,11 +64,15 @@
     ModCDPAddCustomEventParams,
     ModCDPAddMiddlewareParams,
     ModCDPCommandTiming,
+    ModCDPClientConfig,
     ModCDPConnectTiming,
+    ModCDPInjectorConfig,
+    ModCDPLauncherConfig,
     ModCDPPingLatency,
     ModCDPRawTiming,
     ModCDPRoutes,
     ModCDPServerConfig,
+    ModCDPUpstreamConfig,
     CdpMessage,
     ExtensionInfo,
     MessageParams,
@@ -216,11 +220,11 @@ def _json_object(value: JsonValue | None) -> ProtocolResult:
 class ModCDPClient(CDPSurfaceMixin):
     def __init__(
         self,
-        launcher: Mapping[str, Any] | None = None,
-        upstream: Mapping[str, Any] | None = None,
-        injector: Mapping[str, Any] | None = None,
-        client: Mapping[str, Any] | None = None,
-        server: Mapping[str, JsonValue] | None | object = DEFAULT_SERVER,
+        launcher: ModCDPLauncherConfig | Mapping[str, Any] | None = None,
+        upstream: ModCDPUpstreamConfig | Mapping[str, Any] | None = None,
+        injector: ModCDPInjectorConfig | Mapping[str, Any] | None = None,
+        client: ModCDPClientConfig | Mapping[str, Any] | None = None,
+        server: ModCDPServerConfig | Mapping[str, JsonValue] | None | object = DEFAULT_SERVER,
         custom_commands: Sequence[ModCDPAddCustomCommandParams] | None = None,
         custom_events: Sequence[ModCDPAddCustomEventParams] | None = None,
         custom_middlewares: Sequence[ModCDPAddMiddlewareParams] | None = None,
diff --git a/python/modcdp/types/modcdp.py b/python/modcdp/types/modcdp.py
index 3851b64d..2bdcf5bb 100644
--- a/python/modcdp/types/modcdp.py
+++ b/python/modcdp/types/modcdp.py
@@ -15,6 +15,8 @@
 ProtocolPayload: TypeAlias = dict[str, JsonValue]
 MessageParams: TypeAlias = Mapping[str, object]
 ModCDPRoutes: TypeAlias = dict[str, str]
+ModCDPLauncherMode: TypeAlias = Literal["local", "remote", "bb", "none"]
+ModCDPUpstreamMode: TypeAlias = Literal["ws", "pipe", "nativemessaging", "reversews", "nats"]
 
 
 class _ModCDPAddCustomCommandRequired(TypedDict):
@@ -111,6 +113,53 @@ class ModCDPTopology(TypedDict):
     contexts: dict[str, ModCDPTopologyExecutionContext]
 
 
+class ModCDPLauncherConfig(TypedDict, total=False):
+    launcher_mode: ModCDPLauncherMode
+    launcher_executable_path: str | None
+    launcher_user_data_dir: str | None
+    launcher_options: dict[str, JsonValue]
+
+
+class ModCDPUpstreamConfig(TypedDict, total=False):
+    upstream_mode: ModCDPUpstreamMode
+    upstream_cdp_url: str | None
+    upstream_nats_url: str | None
+    upstream_nats_subject_prefix: str | None
+    upstream_nats_wait_timeout_ms: int
+    upstream_reversews_bind: str | None
+    upstream_reversews_wait_timeout_ms: int
+    upstream_nativemessaging_manifest: str | None
+    upstream_nativemessaging_manifests: list[str] | None
+    upstream_nativemessaging_host_name: str | None
+    upstream_nativemessaging_wait_timeout_ms: int
+    upstream_ws_connect_error_settle_timeout_ms: int
+
+
+class ModCDPInjectorConfig(TypedDict, total=False):
+    injector_mode: Literal["auto", "discover", "inject", "borrow", "none"]
+    injector_extension_path: str | None
+    injector_extension_id: str | None
+    injector_service_worker_url_includes: list[str]
+    injector_service_worker_url_suffixes: list[str]
+    injector_trust_service_worker_target: bool
+    injector_require_service_worker_target: bool
+    injector_service_worker_ready_expression: str | None
+    injector_execution_context_timeout_ms: int
+    injector_service_worker_probe_timeout_ms: int
+    injector_service_worker_ready_timeout_ms: int
+    injector_service_worker_poll_interval_ms: int
+    injector_target_session_poll_interval_ms: int
+
+
+class ModCDPClientConfig(TypedDict, total=False):
+    client_routes: ModCDPRoutes
+    client_hydrate_aliases: bool
+    client_mirror_upstream_events: bool
+    client_cdp_send_timeout_ms: int
+    client_event_wait_timeout_ms: int
+    client_heartbeat_interval_ms: int
+
+
 class ModCDPConnectTiming(TypedDict):
     started_at: int
     upstream_mode: str | None