diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c23bd9..6a318f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,20 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.5.1](https://github.com/inference-gateway/typescript-sdk/compare/v0.5.0...v0.5.1) (2025-04-27)
+
+### 🐛 Bug Fixes
+
+* Update FunctionParameters schema to enforce required properties and adjust ListModelsResponse structure ([#9](https://github.com/inference-gateway/typescript-sdk/issues/9)) ([ffa4709](https://github.com/inference-gateway/typescript-sdk/commit/ffa470907a11aca26dd29f63ca70d17954a67d17))
+
+### 📚 Documentation
+
+* Add required fields to Model schema and clean up application settings ([7338c28](https://github.com/inference-gateway/typescript-sdk/commit/7338c28c0b8dd67f2c0faefc758cc3344de5c9d6))
+
+### 🔧 Miscellaneous
+
+* **tests:** Format test ([9f121a7](https://github.com/inference-gateway/typescript-sdk/commit/9f121a742d33cd9fa2776dc5fdc5f229f898ccd0))
+
 ## [0.5.0](https://github.com/inference-gateway/typescript-sdk/compare/v0.4.1...v0.5.0) (2025-04-26)
 
 ### ✨ Features
diff --git a/openapi.yaml b/openapi.yaml
index e15c6a2..1867ba0 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -624,6 +624,9 @@ components:
           items:
             $ref: "#/components/schemas/Model"
           default: []
+      required:
+        - object
+        - data
     FunctionObject:
       type: object
       properties:
@@ -671,18 +674,7 @@ components:
         documentation about the format. 
 
         Omitting `parameters` defines a function with an empty parameter list.
-      properties:
-        type:
-          type: string
-          description: The type of the parameters. Currently, only `object` is supported.
-        properties:
-          type: object
-          description: The properties of the parameters.
-        required:
-          type: array
-          items:
-            type: string
-          description: The required properties of the parameters.
+      additionalProperties: true
     ChatCompletionToolType:
       type: string
       description: The type of the tool. Currently, only `function` is supported.
@@ -1060,11 +1052,6 @@ components:
           - general:
               title: "General settings"
               settings:
-                - name: application_name
-                  env: "APPLICATION_NAME"
-                  type: string
-                  default: "inference-gateway"
-                  description: "The name of the application"
                 - name: environment
                   env: "ENVIRONMENT"
                   type: string
diff --git a/package.json b/package.json
index 73f99b1..0e8e405 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@inference-gateway/sdk",
-  "version": "0.5.0",
+  "version": "0.5.1",
   "description": "An SDK written in Typescript for the [Inference Gateway](https://github.com/inference-gateway/inference-gateway).",
   "main": "dist/src/index.js",
   "types": "dist/src/index.d.ts",
diff --git a/src/types/generated/index.ts b/src/types/generated/index.ts
index 51ca143..1936db3 100644
--- a/src/types/generated/index.ts
+++ b/src/types/generated/index.ts
@@ -213,7 +213,7 @@ export interface components {
     /** @description Response structure for listing models */
     ListModelsResponse: {
       provider?: components['schemas']['Provider'];
-      object?: string;
+      object: string;
       /** @default [] */
       data: components['schemas']['Model'][];
     };
@@ -236,12 +236,7 @@ export interface components {
     /** @description The parameters the functions accepts, described as a JSON Schema object. See the [guide](/docs/guides/function-calling) for examples, and the [JSON Schema reference](https://json-schema.org/understanding-json-schema/) for documentation about the format.
      *     Omitting `parameters` defines a function with an empty parameter list. */
     FunctionParameters: {
-      /** @description The type of the parameters. Currently, only `object` is supported. */
-      type?: string;
-      /** @description The properties of the parameters. */
-      properties?: Record<string, never>;
-      /** @description The required properties of the parameters. */
-      required?: string[];
+      [key: string]: unknown;
     };
     /**
      * @description The type of the tool. Currently, only `function` is supported.
diff --git a/tests/client.test.ts b/tests/client.test.ts
index adb439f..eabc7a8 100644
--- a/tests/client.test.ts
+++ b/tests/client.test.ts
@@ -266,9 +266,7 @@ describe('InferenceGatewayClient', () => {
     it('should handle streaming chat completions reasoning and content', async () => {
       const mockRequest = {
         model: 'gpt-4o',
-        messages: [
-          { role: MessageRole.user, content: 'Hello' },
-        ],
+        messages: [{ role: MessageRole.user, content: 'Hello' }],
         stream: true,
       };
       const mockStream = new TransformStream();