diff --git a/README.md b/README.md
index 4e668ac..fcdb4c9 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,15 @@
 
 The PSX API bundle integrates the [PSX API components](https://phpsx.org/) into Symfony which help
 to build fully type-safe REST APIs. Basically the bundle provides additional attributes which you
-can use at your [controller](#controller) to map HTTP parameters to arguments of your controller.
-Based on those attributes and type-hints the bundle is able to generate different artifacts:
+can use at your [controller](#controller) to map HTTP parameters to arguments of your controller
+and commands to generate based on those attributes and type-hints different artifacts:
 
-* Generate OpenAPI specification without additional attributes
 * Generate Client SDKs for different languages i.e. TypeScript and PHP
+  * `php bin/console generate:sdk client-typescript`
+* Generate OpenAPI specification without additional attributes
+  * `php bin/console generate:sdk spec-openapi`
 * Generate DTO classes using [TypeSchema](https://typeschema.org/)
+  * `php bin/console generate:model`
 
 As you note this bundle is about REST APIs and not related to any PlayStation content, the name PSX
 was invented way back and is simply an acronym which stands for "**P**HP, **S**QL, **X**ML"
@@ -93,43 +96,32 @@ the incoming HTTP request. In the controller we use a fictional `PostService` an
 but you are complete free to design the controller how you like, for PSX it is only important to map
 the incoming HTTP request parameters to arguments and to provide a return type.
 
-## Generator
+### Raw payload
 
-### Model
+We always recommend to generate concrete DTOs to describe the request and response payloads.
+If you need a raw payload we provide the following type-hints to receive a raw value.
 
-To generate the model classes for the incoming and outgoing payload this bundle provides
-a model generator s.
+* `Psr\Http\Message\StreamInterface`
+  * Receive the raw request as stream `application/octet-stream`
+* `PSX\Data\Body\Json`
+  * Receive the raw request as JSON `application/json`
+* `PSX\Data\Body\Form`
+  * Receive the raw request as form `application/x-www-form-urlencoded`
+* `string`
+  * Receive the raw request as string `text/plain`
 
-```
-php bin/console generate:model
-```
-
-This commands reads the [TypeSchema](https://typeschema.org/) specification located at `config/typeschema.json`
-and writes all model classes to `src/Model`. In general TypeSchema is a JSON specification to describe data models.
-The following is an example specification to generate a simple Student model.
+For example to write a simple proxy method which returns the provided JSON payload s.
 
-```json
+```php
+#[Route('/post', methods: ['POST'])]
+public function update(#[Body] Json $body): Json
 {
-  "definitions": {
-    "Student": {
-      "description": "A simple student struct",
-      "type": "struct",
-      "properties": {
-        "firstName": {
-          "type": "string"
-        },
-        "lastName": {
-          "type": "string"
-        },
-        "age": {
-          "type": "integer"
-        }
-      }
-    }
-  }
+    return $body;
 }
 ```
 
+## Generator
+
 ### SDK
 
 To generate an SDK you can simply run the following command:
@@ -150,7 +142,7 @@ select a different type.
 
 Through the SDKgen project you have the option to generate also client SDKs for
 different programming languages, therefor you only need to register at the [SDKgen](https://sdkgen.app/)
-website to obtain a client id and secret which you need to set as `psx.sdkgen_client_id` and `psx.sdkgen_client_secret`
+website to obtain a client id and secret which you need to set as `psx_api.sdkgen_client_id` and `psx_api.sdkgen_client_secret`
 at your config. After this you can use one of the following types:
 
 * `client-csharp`
@@ -170,6 +162,57 @@ php bin/console api:push my_document_name
 Then you also need to provide a client id and secret for your account. The TypeHub platform basically tracks all changes of
 the API specification and it is possible to download different SDKs. 
 
+### Model
+
+This bundle also provides a model generator which helps to generate DTOs to describe the
+incoming and outgoing payload s.
+
+```
+php bin/console generate:model
+```
+
+This commands reads the [TypeSchema](https://typeschema.org/) specification located at `config/typeschema.json`
+and writes all model classes to `src/Model`. In general TypeSchema is a JSON specification to describe data models.
+The following is an example specification to generate a simple Student model.
+
+```json
+{
+  "definitions": {
+    "Student": {
+      "description": "A simple student struct",
+      "type": "struct",
+      "properties": {
+        "firstName": {
+          "type": "string"
+        },
+        "lastName": {
+          "type": "string"
+        },
+        "age": {
+          "type": "integer"
+        }
+      }
+    }
+  }
+}
+```
+
+## Configuration
+
+The bundle needs the following `psx_api.yaml` configuration:
+
+```yaml
+psx_api:
+  base_url: 'https://api.acme.com'
+  sdkgen_client_id: ''
+  sdkgen_client_secret: ''
+```
+
+The `base_url` is the absolute url to your API so that you don't need to provide the
+base url at your client SDK.
+
+The `sdkgen_client_id` and `sdkgen_client_secret` are credentials to the [SDKgen](https://sdkgen.app/) app.
+
 ## Technical
 
 This bundle tries to not change any Symfony behaviour, for example we use the existing `#[Route]` attribute instead