browserbase · shrey150 · Apr 5, 2026 · Apr 5, 2026 · Apr 5, 2026 · Apr 5, 2026
diff --git a/packages/cli/README.md b/packages/cli/README.md
@@ -239,7 +239,6 @@ browse status
 |----------|-------------|
 | `BROWSE_SESSION` | Default session name (alternative to `--session`) |
 | `BROWSERBASE_API_KEY` | Browserbase API key (required for `browse env remote`) |
-| `BROWSERBASE_PROJECT_ID` | Browserbase project ID (optional, passed through if set) |
 
 ## Element References
 

diff --git a/packages/docs/v3/basics/agent.mdx b/packages/docs/v3/basics/agent.mdx
@@ -101,7 +101,7 @@ await agent.execute({
 const agent = stagehand.agent({
     mode: "cua",
     model: {
-        modelName: "anthropic/claude-sonnet-4-20250514",
+        modelName: "anthropic/claude-sonnet-4-6",
         apiKey: process.env.ANTHROPIC_API_KEY
     },
     systemPrompt: "You are a helpful assistant...",
@@ -138,7 +138,7 @@ Both DOM and CUA modes have their strengths and weaknesses. Hybrid mode combines
 <Warning>
 **Model Requirements:** Hybrid mode requires models that can reliably perform coordinate-based actions from screenshots. The following models are recommended:
 - **Google:** `google/gemini-3-flash-preview`
-- **Anthropic:** `anthropic/claude-sonnet-4-20250514`, `anthropic/claude-sonnet-4-5-20250929`, `anthropic/claude-haiku-4-5-20251001`
+- **Anthropic:** `anthropic/claude-sonnet-4-6`, `anthropic/claude-sonnet-4-5-20250929`, `anthropic/claude-haiku-4-5-20251001`
 
 Other models may not reliably produce accurate coordinates for clicking and typing.
 
@@ -289,7 +289,7 @@ import { z } from "zod";
 
 const agent = stagehand.agent({
   mode: "cua",
-  model: "anthropic/claude-sonnet-4-20250514",
+  model: "anthropic/claude-sonnet-4-6",
   tools: {
     searchDatabase: tool({
       description: 'Search for records in the database',

diff --git a/packages/docs/v3/best-practices/agent-fallbacks.mdx b/packages/docs/v3/best-practices/agent-fallbacks.mdx
@@ -33,7 +33,7 @@ try {
   console.log("Agent fallback triggered");
 
   const agent = stagehand.agent({
-    model: "anthropic/claude-sonnet-4-20250514",
+    model: "anthropic/claude-sonnet-4-6",
     systemPrompt: "You are a helpful assistant that can use a web browser.",
   });
 

diff --git a/packages/docs/v3/best-practices/computer-use.mdx b/packages/docs/v3/best-practices/computer-use.mdx
@@ -55,7 +55,6 @@ const stagehand = new Stagehand({
     model: "google/gemini-2.5-flash",
 
     browserbaseSessionCreateParams: {
-      projectId: process.env.BROWSERBASE_PROJECT_ID!,
       browserSettings: {
 		blockAds: true,
         viewport: {
@@ -134,7 +133,7 @@ await page.goto("https://www.google.com/");
 const agent = stagehand.agent({
     mode: "cua",
     model: {
-        modelName: "anthropic/claude-sonnet-4-20250514",
+        modelName: "anthropic/claude-sonnet-4-6",
         apiKey: process.env.ANTHROPIC_API_KEY
     },
     systemPrompt: "You are a helpful assistant...",
@@ -175,7 +174,7 @@ const agent = stagehand.agent({
 ```typescript
 const agent = stagehand.agent({
     mode: "cua",
-    model: "anthropic/claude-sonnet-4-20250514",
+    model: "anthropic/claude-sonnet-4-6",
     // ANTHROPIC_API_KEY is auto-loaded - set in your .env
 });
 ```

diff --git a/packages/docs/v3/best-practices/deployments.mdx b/packages/docs/v3/best-practices/deployments.mdx
@@ -65,15 +65,13 @@ export default async function handler(req: VercelRequest, res: VercelResponse):
     const stagehand = new Stagehand({
       env: "BROWSERBASE",
       apiKey: process.env.BROWSERBASE_API_KEY!,
-      projectId: process.env.BROWSERBASE_PROJECT_ID!,
       disablePino: true,
       model: {
         modelName: "google/gemini-2.5-flash",
         apiKey: process.env.GOOGLE_API_KEY!,
       },
       // optional session params
       browserbaseSessionCreateParams: {
-        projectId: process.env.BROWSERBASE_PROJECT_ID!,
         region: "us-west-2",
         browserSettings: {
           blockAds: true,
@@ -169,7 +167,6 @@ Do not commit `.env` in production. Add variables via Vercel CLI:
 
 ```bash
 vercel env add BROWSERBASE_API_KEY
-vercel env add BROWSERBASE_PROJECT_ID
 # (and your model key if needed)
 vercel env add GOOGLE_API_KEY
 ```

diff --git a/packages/docs/v3/best-practices/deterministic-agent.mdx b/packages/docs/v3/best-practices/deterministic-agent.mdx
@@ -324,7 +324,7 @@ async function executeWithFallback() {
   await page.goto("https://example.com");
 
   const agent = stagehand.agent({
-    model: "anthropic/claude-sonnet-4-20250514"
+    model: "anthropic/claude-sonnet-4-6"
   });
 
   try {

diff --git a/packages/docs/v3/configuration/browser.mdx b/packages/docs/v3/configuration/browser.mdx
@@ -78,12 +78,11 @@ Before getting started, set up the required environment variables:
 <CodeGroup>
 ```bash .env
 BROWSERBASE_API_KEY=your_api_key_here
-BROWSERBASE_PROJECT_ID=your_project_id_here
 ```
 </CodeGroup>
 
 <Tip>
-Get your API key and Project ID from the [Browserbase Dashboard](https://browserbase.com/overview)
+Get your API key from the [Browserbase Dashboard](https://browserbase.com/overview)
 </Tip>
 
 ### Using Stagehand with Browserbase
@@ -110,9 +109,8 @@ import { Stagehand } from "@browserbasehq/stagehand";
 
 const stagehand = new Stagehand({
   env: "BROWSERBASE",
-  // Optional: API Key and Project ID will be pulled directly from your environment
+  // Optional: API Key will be pulled directly from your environment
   apiKey: process.env.BROWSERBASE_API_KEY,
-  projectId: process.env.BROWSERBASE_PROJECT_ID,
   browserbaseSessionCreateParams: {
     proxies: true,
     region: "us-west-2",
@@ -132,9 +130,7 @@ console.log("Session ID:", stagehand.sessionId);
 const stagehand = new Stagehand({
       env: "BROWSERBASE",
       apiKey: process.env.BROWSERBASE_API_KEY,
-      projectId: process.env.BROWSERBASE_PROJECT_ID,
       browserbaseSessionCreateParams: {
-        projectId: process.env.BROWSERBASE_PROJECT_ID!,
         proxies: true,
         region: "us-west-2",
         timeout: 3600, // 1 hour session timeout
@@ -170,7 +166,6 @@ const bb = new Browserbase({
 });
 
 const session = await bb.sessions.create({
-  projectId: process.env.BROWSERBASE_PROJECT_ID!,
   // Add configuration options here
 });
 ```
@@ -399,7 +394,7 @@ Setting `domSettleTimeout` too low may cause actions to fail on elements that ar
 
 <AccordionGroup>
 <Accordion title="Browserbase Authentication Errors">
-- Verify your `BROWSERBASE_API_KEY` and `BROWSERBASE_PROJECT_ID` are set correctly
+- Verify your `BROWSERBASE_API_KEY` is set correctly
 - Check that your API key has the necessary permissions
 - Ensure your Browserbase account has sufficient credits
 </Accordion>

diff --git a/packages/docs/v3/first-steps/ai-rules.mdx b/packages/docs/v3/first-steps/ai-rules.mdx
@@ -293,7 +293,7 @@ For more advanced scenarios using computer-use models:
 ```typescript
 const agent = stagehand.agent({
   mode: "cua", // Enable Computer Use Agent mode
-  model: "anthropic/claude-sonnet-4-20250514",
+  model: "anthropic/claude-sonnet-4-6",
   // or "google/gemini-2.5-computer-use-preview-10-2025"
   systemPrompt: `You are a helpful assistant that can use a web browser.
     Do not ask follow up questions, the user will trust your judgement.`,

diff --git a/packages/docs/v3/first-steps/installation.mdx b/packages/docs/v3/first-steps/installation.mdx
@@ -49,7 +49,6 @@ Set environment variables (or a `.env` via your framework):
 ```bash Bash
 OPENAI_API_KEY=your_api_key
 BROWSERBASE_API_KEY=your_api_key
-BROWSERBASE_PROJECT_ID=your_project_id
 ```
 </CodeGroup>
 

diff --git a/packages/docs/v3/first-steps/quickstart.mdx b/packages/docs/v3/first-steps/quickstart.mdx
@@ -87,7 +87,7 @@ main().catch((err) => {
 </CodeGroup>
 
 <Tip>
-To use, set provider keys in `.env` (e.g., `OPENAI_API_KEY`). For cloud browsers, add `BROWSERBASE_API_KEY` and `BROWSERBASE_PROJECT_ID`.
+To use, set provider keys in `.env` (e.g., `OPENAI_API_KEY`). For cloud browsers, add `BROWSERBASE_API_KEY`.
 </Tip>
 
 ## Next steps

diff --git a/packages/docs/v3/integrations/convex/configuration.mdx b/packages/docs/v3/integrations/convex/configuration.mdx
@@ -44,7 +44,6 @@ Set the following environment variables in your [Convex Dashboard](https://dashb
 | Variable | Description |
 |----------|-------------|
 | `BROWSERBASE_API_KEY` | Your Browserbase API key |
-| `BROWSERBASE_PROJECT_ID` | Your Browserbase project ID |
 | `MODEL_API_KEY` | API key for your LLM provider (OpenAI, Anthropic, etc.) |
 
 ## Basic Usage
@@ -63,7 +62,6 @@ import { z } from "zod";
 
 const stagehand = new Stagehand(components.stagehand, {
   browserbaseApiKey: process.env.BROWSERBASE_API_KEY!,
-  browserbaseProjectId: process.env.BROWSERBASE_PROJECT_ID!,
   modelApiKey: process.env.MODEL_API_KEY!,
 });
 ```
@@ -188,7 +186,6 @@ The default model is `openai/gpt-4o`. You can configure alternative providers:
 ```typescript
 const stagehand = new Stagehand(components.stagehand, {
   browserbaseApiKey: process.env.BROWSERBASE_API_KEY!,
-  browserbaseProjectId: process.env.BROWSERBASE_PROJECT_ID!,
   modelApiKey: process.env.ANTHROPIC_API_KEY!,
   modelName: "anthropic/claude-sonnet-4-5-20250929",
 });

diff --git a/packages/docs/v3/integrations/crew-ai/configuration.mdx b/packages/docs/v3/integrations/crew-ai/configuration.mdx
@@ -22,14 +22,13 @@ pip install stagehand crewai crewai-tools
 
 You'll need API keys from three services:
 
-1. **Browserbase API Key and Project ID**: Get these from your [Browserbase dashboard](https://www.browserbase.com/)
+1. **Browserbase API Key**: Get this from your [Browserbase dashboard](https://www.browserbase.com/)
 2. **LLM API Key**: Get an API key from [OpenAI](https://platform.openai.com/api-keys) or [Anthropic](https://console.anthropic.com/)
 
 Store your API keys securely as environment variables:
 
 ```bash
 BROWSERBASE_API_KEY="your-browserbase-api-key"
-BROWSERBASE_PROJECT_ID="your-browserbase-project-id"
 OPENAI_API_KEY="your-openai-api-key"
 ANTHROPIC_API_KEY="your-anthropic-api-key"
 ```
@@ -46,13 +45,11 @@ from stagehand.schemas import AvailableModel
 
 # Get API keys from environment
 browserbase_api_key = os.environ.get("BROWSERBASE_API_KEY")
-browserbase_project_id = os.environ.get("BROWSERBASE_PROJECT_ID")
 model_api_key = os.environ.get("OPENAI_API_KEY")  # or ANTHROPIC_API_KEY
 
 # Initialize the StagehandTool
 stagehand_tool = StagehandTool(
     api_key=browserbase_api_key,
-    project_id=browserbase_project_id,
     model_api_key=model_api_key,
     model_name=AvailableModel.GPT_4O,  # or AvailableModel.CLAUDE_3_7_SONNET_LATEST
 )
@@ -108,7 +105,6 @@ Customize the StagehandTool behavior with additional parameters:
 ```python
 stagehand_tool = StagehandTool(
     api_key=browserbase_api_key,
-    project_id=browserbase_project_id,
     model_api_key=model_api_key,
     model_name=AvailableModel.CLAUDE_3_7_SONNET_LATEST,
     dom_settle_timeout_ms=5000,  # Wait longer for DOM to settle

diff --git a/packages/docs/v3/integrations/langchain/configuration.mdx b/packages/docs/v3/integrations/langchain/configuration.mdx
@@ -24,7 +24,6 @@ For remote browser automation, set up your Browserbase credentials:
 
 ```bash
 BROWSERBASE_API_KEY="your-browserbase-api-key"
-BROWSERBASE_PROJECT_ID="your-browserbase-project-id"
 ```
 
 ## Step 3: Create a Stagehand Instance

diff --git a/packages/docs/v3/integrations/mcp/configuration.mdx b/packages/docs/v3/integrations/mcp/configuration.mdx
@@ -20,17 +20,10 @@ Command-line flags are only available when running the server locally (`npx @bro
 
 Configure the essential Browserbase credentials and optional debugging settings:
 
-<CardGroup cols={2}>
 <Card title="BROWSERBASE_API_KEY" icon="key">
 Your Browserbase API key for authentication
 </Card>
 
-<Card title="BROWSERBASE_PROJECT_ID" icon="key">
-Your Browserbase project ID
-</Card>
-
-</CardGroup>
-
 ## Command-Line Flags
 
 ### Available Flags
@@ -83,7 +76,6 @@ When using our remote hosted server, we provide the LLM costs for Gemini, the [b
       "args": ["@browserbasehq/mcp"],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -101,7 +93,6 @@ When using our remote hosted server, we provide the LLM costs for Gemini, the [b
       "args": ["/path/to/mcp-server-browserbase/cli.js"],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -123,7 +114,6 @@ node cli.js --port 8931
       "url": "http://localhost:8931/mcp",
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -151,7 +141,6 @@ Enable Browserbase proxies for IP rotation and geo-location testing.
       "args": ["@browserbasehq/mcp", "--proxies"],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -177,7 +166,6 @@ Enable advanced anti-detection features for enhanced stealth browsing.
       "args": ["@browserbasehq/mcp", "--advancedStealth"],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -200,8 +188,7 @@ Use persistent browser contexts to maintain authentication and state across sess
       "command": "npx",
       "args": ["@browserbasehq/mcp", "--contextId", "your_context_id"],
       "env": {
-        "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id"
+        "BROWSERBASE_API_KEY": "your_api_key"
       }
     }
   }
@@ -228,7 +215,6 @@ Customize browser window dimensions. Default is 1288x711. Recommended aspect rat
       ],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }
@@ -285,8 +271,7 @@ When using any custom model (non-default), you must provide your own API key for
         "--modelApiKey", "your_openai_api_key"
       ],
       "env": {
-        "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id"
+        "BROWSERBASE_API_KEY": "your_api_key"
       }
     }
   }
@@ -304,8 +289,7 @@ When using any custom model (non-default), you must provide your own API key for
         "--modelApiKey", "your_anthropic_api_key"
       ],
       "env": {
-        "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id"
+        "BROWSERBASE_API_KEY": "your_api_key"
       }
     }
   }
@@ -333,7 +317,6 @@ Configure custom host and port for SHTTP transport.
       ],
       "env": {
         "BROWSERBASE_API_KEY": "your_api_key",
-        "BROWSERBASE_PROJECT_ID": "your_project_id",
         "GEMINI_API_KEY": "your_gemini_api_key"
       }
     }

diff --git a/packages/docs/v3/integrations/playwright.mdx b/packages/docs/v3/integrations/playwright.mdx
@@ -180,7 +180,6 @@ When using Browserbase, set your credentials:
 
 ```bash
 BROWSERBASE_API_KEY=your_api_key
-BROWSERBASE_PROJECT_ID=your_project_id
 ```
 
 For OpenAI (or other providers):

diff --git a/packages/docs/v3/integrations/puppeteer.mdx b/packages/docs/v3/integrations/puppeteer.mdx
@@ -145,7 +145,6 @@ When using Browserbase, set your credentials:
 
 ```bash
 BROWSERBASE_API_KEY=your_api_key
-BROWSERBASE_PROJECT_ID=your_project_id
 ```
 
 For OpenAI (or other providers):

diff --git a/packages/docs/v3/integrations/selenium.mdx b/packages/docs/v3/integrations/selenium.mdx
@@ -40,9 +40,7 @@ const bb = new Browserbase({
 });
 
 // Create shared session
-const session = await bb.sessions.create({
-  projectId: process.env.BROWSERBASE_PROJECT_ID,
-});
+const session = await bb.sessions.create({});
 
 console.log("Session created:", session.id);
 ```
-Original file line number
+Diff line change
@@ Expand Up @@
     ```bash
     BROWSERBASE_API_KEY="your-browserbase-api-key"
-    BROWSERBASE_PROJECT_ID="your-browserbase-project-id"
     ```
     ## Step 3: Create a Stagehand Instance
@@ Expand Down @@