diff --git a/README.md b/README.md
index 61625a1..f80facd 100644
--- a/README.md
+++ b/README.md
@@ -59,17 +59,17 @@ Replace `YOUR_GEMINI_API_KEY` with your actual key.
 You need to explicitly use Vertex AI, then provide project and location to use the agent:
 
 ```bash
-export USE_VERTEXAI=true
-export VERTEXAI_PROJECT="YOUR_PROJECT_ID"
-export VERTEXAI_LOCATION="YOUR_LOCATION"
+export GOOGLE_GENAI_USE_VERTEXAI=true
+export GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"
+export GOOGLE_CLOUD_LOCATION="YOUR_LOCATION"
 ```
 
 Or to add this to your virtual environment:
 
 ```bash
-echo 'export USE_VERTEXAI=true' >> .venv/bin/activate
-echo 'export VERTEXAI_PROJECT="your-project-id"' >> .venv/bin/activate
-echo 'export VERTEXAI_LOCATION="your-location"' >> .venv/bin/activate
+echo 'export GOOGLE_GENAI_USE_VERTEXAI=true' >> .venv/bin/activate
+echo 'export GOOGLE_CLOUD_PROJECT="your-project-id"' >> .venv/bin/activate
+echo 'export GOOGLE_CLOUD_LOCATION="your-location"' >> .venv/bin/activate
 # After editing, you'll need to deactivate and reactivate your virtual
 # environment if it's already active:
 deactivate
@@ -134,6 +134,9 @@ The `main.py` script is the command-line interface (CLI) for running the browser
 
 | Variable | Description | Required |
 |-|-|-|
-| GEMINI_API_KEY | Your API key for the Gemini model. | Yes |
-| BROWSERBASE_API_KEY | Your API key for Browserbase. | Yes (when using the browserbase environment) |
-| BROWSERBASE_PROJECT_ID | Your Project ID for Browserbase. | Yes (when using the browserbase environment) |
+| `GEMINI_API_KEY` | Your API key for the Gemini model. | Yes (if using Gemini Developer API) |
+| `GOOGLE_CLOUD_PROJECT` | Your Google Cloud Project. | Yes (if using Vertex AI) |
+| `GOOGLE_CLOUD_LOCATION` | Your Google Cloud Region. | Yes (if using Vertex AI) |
+| `GOOGLE_GENAI_USE_VERTEXAI` | Set to `True` if using Vertex AI | Yes (if using Vertex AI) |
+| `BROWSERBASE_API_KEY` | Your API key for Browserbase. | Yes (when using the browserbase environment) |
+| `BROWSERBASE_PROJECT_ID` | Your Project ID for Browserbase. | Yes (when using the browserbase environment) |
diff --git a/agent.py b/agent.py
index 2df602e..5a9bb3f 100644
--- a/agent.py
+++ b/agent.py
@@ -75,9 +75,10 @@ def __init__(
         self.final_reasoning = None
         self._client = genai.Client(
             api_key=os.environ.get("GEMINI_API_KEY"),
-            vertexai=os.environ.get("USE_VERTEXAI", "0").lower() in ["true", "1"],
-            project=os.environ.get("VERTEXAI_PROJECT"),
-            location=os.environ.get("VERTEXAI_LOCATION"),
+            vertexai=os.environ.get("GOOGLE_GENAI_USE_VERTEXAI", "0").lower()
+            in ["true", "1"],
+            project=os.environ.get("GOOGLE_CLOUD_PROJECT"),
+            location=os.environ.get("GOOGLE_CLOUD_LOCATION"),
         )
         self._contents: list[Content] = [
             Content(