Remove BROWSERBASE_PROJECT_ID requirement (#625)

* Remove BROWSERBASE_PROJECT_ID requirement

The Browserbase API no longer requires a project ID to create sessions —
it is inferred from the API key. Remove the env var requirement from both
the TypeScript daemon and Rust CLI, and update docs accordingly.

* Remove unnecessary Content-Type header since no body is sent

README.md

@@ -1136,7 +1136,6 @@ To enable Browserbase, use the `-p` flag:
 
 ```bash
 export BROWSERBASE_API_KEY="your-api-key"
-export BROWSERBASE_PROJECT_ID="your-project-id"
 agent-browser -p browserbase open https://example.com
 ```
 
@@ -1145,13 +1144,12 @@ Or use environment variables for CI/scripts:
 ```bash
 export AGENT_BROWSER_PROVIDER=browserbase
 export BROWSERBASE_API_KEY="your-api-key"
-export BROWSERBASE_PROJECT_ID="your-project-id"
 agent-browser open https://example.com
 ```
 
 When enabled, agent-browser connects to a Browserbase session instead of launching a local browser. All commands work identically.
 
-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).
 
 ### Browser Use
 

cli/src/native/providers.rs

@@ -82,15 +82,11 @@ pub async fn close_provider_session(session: &ProviderSession) {
 async fn connect_browserbase() -> Result<(String, Option<ProviderSession>), String> {
     let api_key = env::var("BROWSERBASE_API_KEY")
         .map_err(|_| "BROWSERBASE_API_KEY environment variable is not set")?;
-    let project_id = env::var("BROWSERBASE_PROJECT_ID")
-        .map_err(|_| "BROWSERBASE_PROJECT_ID environment variable is not set")?;
 
     let client = reqwest::Client::new();
     let response = client
         .post("https://api.browserbase.com/v1/sessions")
-        .header("Content-Type", "application/json")
         .header("X-BB-API-Key", &api_key)
-        .json(&json!({ "projectId": project_id }))
         .send()
         .await
         .map_err(|e| format!("Browserbase request failed: {}", e))?;

docs/src/app/cdp-mode/page.mdx

@@ -120,7 +120,6 @@ Use cloud browser infrastructure when local browsers aren't available:
 ```bash
 # Browserbase
 export BROWSERBASE_API_KEY="your-api-key"
-export BROWSERBASE_PROJECT_ID="your-project-id"
 agent-browser -p browserbase open https://example.com
 
 # Browser Use

src/browser.ts

@@ -914,27 +914,22 @@ export class BrowserManager {
 
   /**
    * Connect to Browserbase remote browser via CDP.
-   * Requires BROWSERBASE_API_KEY and BROWSERBASE_PROJECT_ID environment variables.
+   * Requires BROWSERBASE_API_KEY environment variable.
    */
   private async connectToBrowserbase(): Promise<void> {
     const browserbaseApiKey = process.env.BROWSERBASE_API_KEY;
-    const browserbaseProjectId = process.env.BROWSERBASE_PROJECT_ID;
 
-    if (!browserbaseApiKey || !browserbaseProjectId) {
+    if (!browserbaseApiKey) {
       throw new Error(
-        'BROWSERBASE_API_KEY and BROWSERBASE_PROJECT_ID are required when using browserbase as a provider'
+        'BROWSERBASE_API_KEY is required when using browserbase as a provider'
       );
     }
 
     const response = await fetch('https://api.browserbase.com/v1/sessions', {
       method: 'POST',
       headers: {
-        'Content-Type': 'application/json',
         'X-BB-API-Key': browserbaseApiKey,
       },
-      body: JSON.stringify({
-        projectId: browserbaseProjectId,
-      }),
     });
 
     if (!response.ok) {