fix: remove incorrect OpenAI API key requirement from docs and samples

UiPathChatOpenAI routes all requests through UiPath's LLM Gateway,
so no OpenAI API key is needed. Removed misleading references from
quick_start.md and sample .env.example files.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: cosmyo

packages/uipath-openai-agents/docs/quick_start.md

@@ -11,11 +11,6 @@ Before proceeding, ensure you have the following installed:
 -   Python 3.11 or higher
 -   `pip` or `uv` package manager
 -   A UiPath Automation Cloud account with appropriate permissions
--   An OpenAI API key
-
-/// info
- **OpenAI** - Generate an OpenAI API key [here](https://platform.openai.com).
-   ///
 
 ## Creating a New Project
 
@@ -104,7 +99,6 @@ Generate your first UiPath OpenAI agent:
 ✓  Created 'main.py' file.
 ✓  Created 'openai_agents.json' file.
 ✓  Created 'pyproject.toml' file.
-🔧  Please ensure to define OPENAI_API_KEY in your .env file.
 💡  Initialize project: uipath init
 💡  Run agent: uipath run agent '{"messages": "Hello"}'
 ```
@@ -138,18 +132,6 @@ This command creates the following files:
 | `uipath.json`    | Input/output JSON schemas and bindings.                                                                                           |
 | `agent.mermaid`  | Graph visual representation.                                                                                                      |
 
-## Set Up Environment Variables
-
-Before running the agent, configure `OPENAI_API_KEY` in the `.env` file:
-
-//// tab | Open AI
-
-```
-OPENAI_API_KEY=sk-proj-......
-```
-
-////
-
 ## Authenticate With UiPath
 
 <!-- termynal -->

packages/uipath-openai-agents/samples/agent-as-tools/.env.example

@@ -1,5 +1,3 @@
-# OpenAI API Configuration
-OPENAI_API_KEY=your-api-key-here
-
-# Optional: Set custom API endpoint
-# OPENAI_API_BASE=https://api.openai.com/v1
+# UiPath Configuration
+# No OpenAI API key is needed - UiPathChatOpenAI routes requests through UiPath's LLM Gateway.
+# Run `uipath auth` to authenticate with UiPath Automation Cloud.

packages/uipath-openai-agents/samples/rag-assistant/.env.example

@@ -1,3 +1,3 @@
-# OpenAI API Key
-# Get your API key from https://platform.openai.com/api-keys
-OPENAI_API_KEY=sk-...
+# UiPath Configuration
+# No OpenAI API key is needed - UiPathChatOpenAI routes requests through UiPath's LLM Gateway.
+# Run `uipath auth` to authenticate with UiPath Automation Cloud.