docs: update PlatformX doc with steps from README (#16406)

EdwardAngert · web-flow · commit 7bda04d01081 · 2025-02-03T17:35:30.000-05:00
copied and reformatted the steps from the https://github.com/coder/coder-platformx-notifications README to include them as an example in the Coder docs [preview](https://coder.com/docs/@ea-dx-integration/admin/integrations/platformx) --------- Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>
diff --git a/docs/admin/integrations/platformx.md b/docs/admin/integrations/platformx.md
@@ -12,17 +12,59 @@ their experience.
 
 You'll need:
 
-- A running Coder v2.19+ deployment
+- Coder v2.19+
 - A PlatformX subscription from [DX](https://getdx.com/)
-- A platform to host the integration (choose any of these):
+- A platform to host the integration, such as:
   - AWS Lambda
+  - Google Cloud Run
   - Heroku
   - Kubernetes
   - Or any other platform that can run Python web applications
 
-## Getting Started
+## coder-platformx-events-middleware
 
-Refer to the instructions in the
+Coder sends [notifications](../monitoring/notifications/index.md) via webhooks
+to coder-platformx-events-middleware, which processes and reformats the payload
+into a structure compatible with [PlatformX by DX](https://help.getdx.com/en/articles/7880779-getting-started).
+
+For more information about coder-platformx-events-middleware and how to
+integrate it with your Coder deployment and PlatformX events, refer to the
 [coder-platformx-notifications](https://github.com/coder/coder-platformx-notifications)
-repository to deploy a lightweight web server to forward Coder Notifications to
-PlatformX.
+repository.
+
+### Supported Notification Types
+
+coder-platformx-events-middleware supports the following [Coder notifications](../monitoring/notifications/index.md):
+
+- Workspace Created
+- Workspace Manually Updated
+- User Account Created
+- User Account Suspended
+- User Account Activated
+
+### Environment Variables
+
+The application expects the following environment variables when started.
+For local development, create a `.env` file in the project root with the following variables.
+A `.env.sample` file is included:
+
+| Variable         | Description                                | Example                                      |
+|------------------|--------------------------------------------|----------------------------------------------|
+| `LOG_LEVEL`      | Logging level (`DEBUG`, `INFO`, `WARNING`) | `INFO`                                       |
+| `GETDX_API_KEY`  | API key for PlatformX                      | `your-api-key`                               |
+| `EVENTS_TRACKED` | Comma-separated list of tracked events     | `"Workspace Created,User Account Suspended"` |
+
+### Logging
+
+Logs are printed to the console and can be adjusted using the `LOG_LEVEL` variable. The available levels are:
+
+| Level     | Description                           |
+|-----------|---------------------------------------|
+| `DEBUG`   | Most verbose, useful for debugging    |
+| `INFO`    | Standard logging for normal operation |
+| `WARNING` | Logs only warnings and errors         |
+
+### API Endpoints
+
+- `GET /` - Health check endpoint
+- `POST /` - Webhook receiver
