diff --git a/metagpt/config2.py b/metagpt/config2.py
index 757e52506..eb4c38368 100644
--- a/metagpt/config2.py
+++ b/metagpt/config2.py
@@ -75,6 +75,7 @@ class Config(CLIParams, YamlModel):
     iflytek_api_key: str = ""
     azure_tts_subscription_key: str = ""
     azure_tts_region: str = ""
+    other: dict = dict()  # other dict
 
     @classmethod
     def from_home(cls, path):
@@ -136,7 +137,6 @@ class Config(CLIParams, YamlModel):
         else:
             return self.other.get(key, default_value)
 
-
     def get_openai_llm(self) -> Optional[LLMConfig]:
         """Get OpenAI LLMConfig by name. If no OpenAI, raise Exception"""
         if self.llm.api_type == LLMType.OPENAI:
diff --git a/metagpt/environment/android_env/env_space.py b/metagpt/environment/android_env/env_space.py
new file mode 100644
index 000000000..9580e3a7d
--- /dev/null
+++ b/metagpt/environment/android_env/env_space.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# @Desc   :
+
+from pathlib import Path
+from typing import Union
+
+import numpy as np
+import numpy.typing as npt
+from gymnasium import spaces
+from pydantic import ConfigDict, Field, field_validator
+
+from metagpt.environment.base_env_space import (
+    BaseEnvAction,
+    BaseEnvActionType,
+    BaseEnvObsParams,
+    BaseEnvObsType,
+)
+
+
+class EnvActionType(BaseEnvActionType):
+    NONE = 0  # no action to run, just get observation
+
+    SYSTEM_BACK = 1
+    SYSTEM_TAP = 2
+    USER_INPUT = 3
+    USER_LONGPRESS = 4
+    USER_SWIPE = 5
+    USER_SWIPE_TO = 6
+
+
+class EnvAction(BaseEnvAction):
+    model_config = ConfigDict(arbitrary_types_allowed=True)
+
+    action_type: int = Field(default=EnvActionType.NONE, description="action type")
+    coord: npt.NDArray[np.int64] = Field(
+        default_factory=lambda: np.zeros(2, dtype=np.int64), description="operation coordinate"
+    )
+    tgt_coord: npt.NDArray[np.int64] = Field(
+        default_factory=lambda: np.zeros(2, dtype=np.int64), description="target operation coordinate"
+    )
+    input_txt: str = Field(default="", description="user input text")
+    orient: str = Field(default="up", description="swipe orient")
+    dist: str = Field(default="medium", description="swipe dist")
+
+    @field_validator("coord", "tgt_coord", mode="before")
+    @classmethod
+    def check_coord(cls, coord) -> npt.NDArray[np.int64]:
+        if not isinstance(coord, np.ndarray):
+            return np.array(coord)
+
+
+class EnvObsType(BaseEnvObsType):
+    NONE = 0  # get whole observation from env
+
+    GET_SCREENSHOT = 1
+    GET_XML = 2
+
+
+class EnvObsParams(BaseEnvObsParams):
+    model_config = ConfigDict(arbitrary_types_allowed=True)
+
+    obs_type: int = Field(default=EnvObsType.NONE, description="observation type")
+    ss_name: str = Field(default="", description="screenshot file name")
+    xml_name: str = Field(default="", description="xml file name")
+    local_save_dir: Union[str, Path] = Field(default="", description="local dir to save file")
+
+
+EnvObsValType = str
+
+
+def get_observation_space() -> spaces.Dict:
+    space = spaces.Dict({"screenshot": spaces.Text(256), "xml": spaces.Text(256)})
+    return space
+
+
+def get_action_space(device_shape: tuple[int, int]) -> spaces.Dict:
+    space = spaces.Dict(
+        {
+            "action_type": spaces.Discrete(len(EnvActionType)),
+            "coord": spaces.Box(
+                np.array([0, 0], dtype=np.int64), np.array([device_shape[0], device_shape[1]], dtype=np.int64)
+            ),
+            "tgt_coord": spaces.Box(
+                np.array([0, 0], dtype=np.int64), np.array([device_shape[0], device_shape[1]], dtype=np.int64)
+            ),
+            "input_txt": spaces.Text(256),
+            "orient": spaces.Text(16),
+            "dist": spaces.Text(16),
+        }
+    )
+    return space
diff --git a/metagpt/environment/api/env_api.py b/metagpt/environment/api/env_api.py
index 60c3215c8..924f6b104 100644
--- a/metagpt/environment/api/env_api.py
+++ b/metagpt/environment/api/env_api.py
@@ -22,7 +22,7 @@ class EnvAPIRegistry(BaseModel):
 
     def get(self, api_name: str):
         if api_name not in self.registry:
-            raise ValueError
+            raise KeyError(f"api_name: {api_name} not found")
         return self.registry.get(api_name)
 
     def __getitem__(self, api_name: str) -> Callable: