The minimal example error

[BlitherBoom812]

When I run the minimal example agentprog "Create a new contact named Agent Prog in the Contacts app." --serial emulator-5554, the terminal repeatedly outputs the following error messages:

18:56:15 - LiteLLM:ERROR: vertex_llm_base.py:609 - Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 605, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 163, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 230, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

Give Feedback / Get Help: https://github.com/BerriAI/litellm/issues/new
LiteLLM.Info: If you need to debug this error, use `litellm._turn_on_debug()'.

2026-03-25 18:56:15 [warning  ] Retrying agentprog.all_utils.general_utils.init_get_litellm_response.<locals>.<lambda> in 30 seconds as it raised APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/main.py", line 3512, in completion
    model_response = vertex_chat_completion.completion(  # type: ignore
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 2894, in completion
    _auth_header, vertex_project = self._ensure_access_token(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 343, in _ensure_access_token
    return self.get_access_token(
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 612, in get_access_token
    raise e
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 605, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 163, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 230, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
. [agentprog.all_utils.general_utils] func_name=[log_it] location=[before_sleep:64]
18:56:57 - LiteLLM:ERROR: vertex_llm_base.py:609 - Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 605, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 163, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 230, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

Give Feedback / Get Help: https://github.com/BerriAI/litellm/issues/new
LiteLLM.Info: If you need to debug this error, use `litellm._turn_on_debug()'.

2026-03-25 18:56:57 [warning  ] Retrying agentprog.all_utils.general_utils.init_get_litellm_response.<locals>.<lambda> in 30 seconds as it raised APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/main.py", line 3512, in completion
    model_response = vertex_chat_completion.completion(  # type: ignore
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 2894, in completion
    _auth_header, vertex_project = self._ensure_access_token(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 343, in _ensure_access_token
    return self.get_access_token(
           ^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 612, in get_access_token
    raise e
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 605, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 163, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 230, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/iot/anaconda3/envs/agent/lib/python3.12/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
. [agentprog.all_utils.general_utils] func_name=[log_it] location=[before_sleep:64]

[BlitherBoom812]

Hi, sorry for that! The default provider for gemini-2.5-pro is set to vertex_ai in the code. We have corrected this in the latest version and tested it with Gemini API key.

Besides, we added a convenient way to choose model and provider in the CLI:

agentprog "Create a new contact named Agent Prog in the Contacts app." --serial emulator-5554 --workflow_model_args.model gemini/gemini-2.5-pro --executor_model_args.model gemini/gemini-2.5-pro # workflow_model_args for STP generation, executor_model_args for STP execution

If you use Python API instead of CLI, specifying the model and provider is easier:

from agentprog import agentprog_pipeline, AgentProgConfig
config = AgentProgConfig(
    task_description="Create a new contact named Agent Prog in the Contacts app.", 
    serial="emulator-5554", 
    workflow_model_args=InitResponseArgs(model='gemini/gemini-2.5-pro'), # Specifying the model for STP generation
    executor_model_args=InitResponseArgs(model='gemini/gemini-2.5-pro'), # Specifying the model for STP execution
)
agentprog_pipeline(config)

Critical Security Warning regarding LiteLLM:

Since our repository depends on LiteLLM, we want to bring an urgent security incident to your attention. On March 24, 2026, a severe supply chain attack was discovered affecting LiteLLM Python versions 1.82.7 and 1.82.8 (see official blog). These compromised versions contain malware capable of exfiltrating your API keys, passwords, SSH keys, and cloud credentials. If you have installed either of these versions, please rotate your keys immediately and downgrade/pin your LiteLLM version to 1.82.6 or lower.