Added docs for new CLI provider + fixed missing API prompt

docs/concepts/cli.mdx

@@ -6,7 +6,7 @@ icon: terminal
 
 # CrewAI CLI Documentation
 
-The CrewAI CLI provides a set of commands to interact with CrewAI, allowing you to create, train, run, and manage crews and pipelines.
+The CrewAI CLI provides a set of commands to interact with CrewAI, allowing you to create, train, run, and manage crews, pipelines and flows.
 
 ## Installation
 
@@ -146,3 +146,32 @@ crewai run
 Make sure to run these commands from the directory where your CrewAI project is set up. 
 Some commands may require additional configuration or setup within your project structure.
 </Note>
+
+
+### 9. API Keys
+
+When running ```crewai create crew``` command, the CLI will prompt for API keys. It will first show you the top 5 most common LLM providers and ask you to select one.
+
+#### Initial API key providers
+
+The CLI will initiallyprompt for API keys for the following services:
+
+* OpenAI
+* Groq
+* Anthropic
+* Google Gemini
+
+When you select a provider, the CLI will prompt you to enter your API key.
+
+#### Other Options
+
+If you select option 6, you will be able to select from a list of LiteLLM supported providers.
+
+When you select a provider, the CLI will prompt you to enter the Key name and the API key.
+
+See the following link for each provider's key name:
+
+* [LiteLLM Providers](https://docs.litellm.ai/docs/providers)
+
+
+

src/crewai/cli/create_crew.py

@@ -94,7 +94,13 @@ def create_crew(name, parent_folder=None):
             type=str
         )
 
-    env_vars = {api_key_var: "YOUR_API_KEY_HERE"}
+    api_key_value = click.prompt(
+        f"Enter your {provider.capitalize()} API key",
+        type=str,
+        hide_input=True
+    )
+
+    env_vars = {api_key_var: api_key_value}
     write_env_file(folder_path, env_vars)
 
     env_vars['MODEL'] = model