diff --git a/.nycrc b/.nycrc
index 80f4ea0..8db21fb 100644
--- a/.nycrc
+++ b/.nycrc
@@ -1,6 +1,10 @@
 {
   "extends": "@istanbuljs/nyc-config-typescript",
   "check-coverage": true,
+  "branches": 80,
+  "lines": 80,
+  "functions": 80,
+  "statements": 80,
   "all": true,
   "include": ["src/**/*.ts"],
   "exclude": ["src/index.ts", "**/*.spec.ts"],
diff --git a/package-lock.json b/package-lock.json
index 21cd4fb..1c880f0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,8 @@
       "version": "1.0.0",
       "license": "MIT",
       "dependencies": {
-        "axios": "^1.2.4"
+        "axios": "^1.2.4",
+        "form-data": "^4.0.0"
       },
       "devDependencies": {
         "@istanbuljs/nyc-config-typescript": "^1.0.2",
diff --git a/package.json b/package.json
index 37d4bbe..11039c6 100644
--- a/package.json
+++ b/package.json
@@ -42,6 +42,7 @@
     "typescript": "^4.9.5"
   },
   "dependencies": {
-    "axios": "^1.2.4"
+    "axios": "^1.2.4",
+    "form-data": "^4.0.0"
   }
 }
diff --git a/src/models/ApiResponse.ts b/src/models/ApiResponse.ts
index a21d6e0..655f3c1 100644
--- a/src/models/ApiResponse.ts
+++ b/src/models/ApiResponse.ts
@@ -1,5 +1,6 @@
 import { App } from './App';
 import { CollectionResponse } from './CollectionResponse';
+import { CreatedWithIdResponse } from './CreatedWithIdResponse';
 import { Field } from './Field';
 import { GetPagedAppsResponse } from './GetPagedAppsResponse';
 import { GetPagedFieldsResponse } from './GetPagedFieldsResponse';
@@ -199,4 +200,18 @@ export class ApiResponse<T> {
       getPagedFieldsResponse
     );
   }
+
+  public AsCreatedWithIdResponseType(): ApiResponse<CreatedWithIdResponse> {
+    const apiResponse = this as ApiResponse<any>;
+
+    const createdWithIdResponse = new CreatedWithIdResponse(
+      apiResponse.data.id
+    );
+
+    return new ApiResponse<CreatedWithIdResponse>(
+      apiResponse.statusCode,
+      apiResponse.message,
+      createdWithIdResponse
+    );
+  }
 }
diff --git a/src/models/CreatedWithIdResponse.ts b/src/models/CreatedWithIdResponse.ts
new file mode 100644
index 0000000..3dbd2c4
--- /dev/null
+++ b/src/models/CreatedWithIdResponse.ts
@@ -0,0 +1,15 @@
+export class CreatedWithIdResponse {
+  /**
+   * @property {number} id - The id of the created object.
+   */
+  public id: number;
+
+  /**
+   * @constructor - Creates a new instance of the CreatedWithIdResponse class.
+   * @param id - The id of the created object.
+   * @returns {CreatedWithIdResponse} - A new instance of the CreatedWithIdResponse class.
+   */
+  constructor(id: number) {
+    this.id = id;
+  }
+}
diff --git a/src/models/OnspringClient.ts b/src/models/OnspringClient.ts
index 40cf193..923d25a 100644
--- a/src/models/OnspringClient.ts
+++ b/src/models/OnspringClient.ts
@@ -10,6 +10,8 @@ import { type App } from './App';
 import { type CollectionResponse } from './CollectionResponse';
 import { type Field } from './Field';
 import { type GetPagedFieldsResponse } from './GetPagedFieldsResponse';
+import { type SaveFileRequest } from './SaveFileRequest';
+import { type CreatedWithIdResponse } from './CreatedWithIdResponse';
 
 /**
  * @class OnspringClient - A client that can communicate with the Onspring API.
@@ -169,6 +171,27 @@ export class OnspringClient {
     return apiResponse.AsGetPagedFieldsResponseType();
   }
 
+  /**
+   * @method saveFile - Saves a file to a record in Onspring.
+   * @param {SaveFileRequest} request - The request that will be used to save the file.
+   * @returns {Promise<ApiResponse<CreatedWithIdResponse>>} - A promise that resolves to an ApiResponse of type CreatedWithIdResponse.
+   */
+  public async saveFile(
+    request: SaveFileRequest
+  ): Promise<ApiResponse<CreatedWithIdResponse>> {
+    const endpoint = EndpointFactory.getSaveFileEndpoint();
+    const formData = request.AsFormData();
+    const apiResponse = await this.post<any>(endpoint, formData, {
+      headers: formData.getHeaders(),
+    });
+
+    if (apiResponse.isSuccessful === false) {
+      return apiResponse;
+    }
+
+    return apiResponse.AsCreatedWithIdResponseType();
+  }
+
   /**
    * @method get - Makes a GET request to the specified endpoint.
    * @param {string} endpoint - The endpoint that will be used to make the request.
diff --git a/src/models/SaveFileRequest.ts b/src/models/SaveFileRequest.ts
new file mode 100644
index 0000000..f1978d4
--- /dev/null
+++ b/src/models/SaveFileRequest.ts
@@ -0,0 +1,86 @@
+import FormData = require('form-data');
+
+/**
+ * @class SaveFileRequest - Represents a request to save a file.
+ */
+export class SaveFileRequest {
+  /**
+   * @property {number} recordId - The id of the record that the file will be saved to.
+   */
+  public recordId: number;
+
+  /**
+   * @property {number} fieldId - The id of the field that the file will be saved to.
+   */
+  public fieldId: number;
+
+  /**
+   * @property {string} notes - The notes for the file.
+   */
+  public notes: string;
+
+  /**
+   * @property {Date} modifiedDate - The modified date for the file.
+   */
+  public modifiedDate: Date;
+
+  /**
+   * @property {string} fileName - The name of the file.
+   */
+  public fileName: string;
+
+  /**
+   * @property {string} contentType - The content type of the file.
+   */
+  public contentType: string;
+
+  /**
+   * @property {ReadableStream} fileStream - The file stream.
+   */
+  public fileStream: ReadableStream;
+
+  /**
+   * @constructor - Creates a new SaveFileRequest.
+   * @param {number} recordId - The id of the record that the file will be saved to.
+   * @param {number} fieldId - The id of the field that the file will be saved to.
+   * @param {string} notes - The notes for the file.
+   * @param {Date} modifiedDate - The modified date for the file.
+   * @param {string} fileName - The name of the file.
+   * @param {string} contentType - The content type of the file.
+   * @param {ReadableStream} fileStream - The file stream.
+   * @returns {SaveFileRequest} - A new SaveFileRequest.
+   */
+  constructor(
+    recordId: number,
+    fieldId: number,
+    notes: string,
+    modifiedDate: Date,
+    fileName: string,
+    contentType: string,
+    fileStream: ReadableStream
+  ) {
+    this.recordId = recordId;
+    this.fieldId = fieldId;
+    this.notes = notes;
+    this.modifiedDate = modifiedDate;
+    this.fileName = fileName;
+    this.contentType = contentType;
+    this.fileStream = fileStream;
+  }
+
+  /**
+   * @method AsFormData - Converts the SaveFileRequest to a FormData object.
+   * @returns {FormData} - The SaveFileRequest as a FormData object.
+   */
+  public AsFormData(): FormData {
+    const formData = new FormData();
+    formData.append('recordId', this.recordId.toString());
+    formData.append('fieldId', this.fieldId.toString());
+    formData.append('notes', this.notes);
+    formData.append('modifiedDate', this.modifiedDate.toUTCString());
+    formData.append('fileName', this.fileName);
+    formData.append('contentType', this.contentType);
+    formData.append('file', this.fileStream, this.fileName);
+    return formData;
+  }
+}