diff --git a/backend/functions/src/shared/3rd-party/brave-search.ts b/backend/functions/src/shared/3rd-party/brave-search.ts
new file mode 100644
index 0000000..e69de29
diff --git a/backend/functions/src/shared/decorators.ts b/backend/functions/src/shared/decorators.ts
new file mode 100644
index 0000000..b4d28a9
--- /dev/null
+++ b/backend/functions/src/shared/decorators.ts
@@ -0,0 +1,7 @@
+export function CloudHTTPv2(config: any): MethodDecorator {
+    return function (target: any, propertyKey: string | symbol, descriptor: PropertyDescriptor) {
+        // Simplified implementation
+        console.log(`CloudHTTPv2 decorator applied to ${String(propertyKey)}`);
+        return descriptor;
+    };
+}
\ No newline at end of file
diff --git a/backend/functions/src/shared/errors.ts b/backend/functions/src/shared/errors.ts
new file mode 100644
index 0000000..ce8df5a
--- /dev/null
+++ b/backend/functions/src/shared/errors.ts
@@ -0,0 +1,13 @@
+export class SecurityCompromiseError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'SecurityCompromiseError';
+  }
+}
+
+export class ServiceCrashedError extends Error {
+  constructor({ message }: { message: string }) {
+    super(message);
+    this.name = 'ServiceCrashedError';
+  }
+}
diff --git a/backend/functions/src/shared/index.ts b/backend/functions/src/shared/index.ts
new file mode 100644
index 0000000..22c4f01
--- /dev/null
+++ b/backend/functions/src/shared/index.ts
@@ -0,0 +1,88 @@
+import { CloudHTTPv2 } from './decorators';
+import { Ctx } from './types';
+import { Logger } from './logger';
+import { OutputServerEventStream } from './output-stream';
+import { RPCReflect } from './rpc-reflect';
+
+// Mock implementations
+class AsyncContext {
+    // Add necessary methods based on usage in the codebase
+    set(key: string, value: any) {}
+    get(key: string): any { return null; }
+}
+
+class InsufficientBalanceError extends Error {
+    constructor(message: string) {
+        super(message);
+        this.name = 'InsufficientBalanceError';
+    }
+}
+
+function Param(name: string, options?: any): ParameterDecorator {
+    return (target: Object, propertyKey: string | symbol | undefined, parameterIndex: number) => {
+        // Implementation details would go here
+    };
+}
+
+// DONE
+class FirebaseStorageBucketControl {
+    bucket: any; // Added bucket property
+
+    constructor() {
+        this.bucket = {
+            file: (fileName: string) => ({
+                exists: async () => [true]
+            })
+        };
+    }
+
+    async uploadFile(filePath: string, destination: string): Promise<string> {
+        console.log(`Mock: Uploading file from ${filePath} to ${destination}`);
+        return `https://storage.googleapis.com/mock-bucket/${destination}`;
+    }
+
+    async downloadFile(filePath: string, destination: string): Promise<void> {
+        console.log(`Mock: Downloading file from ${filePath} to ${destination}`);
+    }
+
+    async deleteFile(filePath: string): Promise<void> {
+        console.log(`Mock: Deleting file ${filePath}`);
+    }
+
+    async fileExists(filePath: string): Promise<boolean> {
+        console.log(`Mock: Checking if file ${filePath} exists`);
+        return true;
+    }
+
+    async saveFile(filePath: string, content: Buffer, options?: any): Promise<void> {
+        console.log(`Mock: Saving file ${filePath}`);
+    }
+
+    async signDownloadUrl(filePath: string, expirationTime: number): Promise<string> {
+        console.log(`Mock: Signing download URL for ${filePath}`);
+        return `https://storage.googleapis.com/mock-bucket/${filePath}?token=mock-signed-url`;
+    }
+}
+
+export {
+    CloudHTTPv2,
+    Ctx,
+    Logger,
+    OutputServerEventStream,
+    RPCReflect,
+    AsyncContext,
+    InsufficientBalanceError,
+    Param,
+    FirebaseStorageBucketControl,
+};
+
+export const loadModulesDynamically = (path: string) => {
+    // Simplified implementation
+    console.log(`Loading modules from ${path}`);
+};
+
+export const registry = {
+    exportAll: () => ({}),
+    exportGrouped: () => ({}),
+    allHandsOnDeck: async () => {},
+};
\ No newline at end of file
diff --git a/backend/functions/src/shared/lib/firestore.ts b/backend/functions/src/shared/lib/firestore.ts
new file mode 100644
index 0000000..8c61727
--- /dev/null
+++ b/backend/functions/src/shared/lib/firestore.ts
@@ -0,0 +1,49 @@
+import { Prop } from 'civkit';
+
+export class FirestoreRecord {
+    static collectionName: string;
+
+    @Prop()
+    _id!: string;
+
+    static from(input: any): FirestoreRecord {
+        const instance = new this();
+        Object.assign(instance, input);
+        return instance;
+    }
+
+    static async fromFirestore(id: string): Promise<FirestoreRecord | undefined> {
+        // Mock implementation
+        console.log(`Fetching document with id ${id} from collection ${this.collectionName}`);
+        return undefined;
+    }
+
+    static async fromFirestoreQuery(query: any): Promise<FirestoreRecord[]> {
+        // Mock implementation
+        console.log(`Executing query on collection ${this.collectionName}`);
+        return [];
+    }
+
+    static async save(data: any): Promise<void> {
+        // Mock implementation
+        console.log(`Saving data to collection ${this.collectionName}`);
+    }
+
+    degradeForFireStore(): any {
+        // Default implementation
+        return { ...this };
+    }
+
+    static COLLECTION = {
+        doc: (id: string) => ({
+            set: (data: any, options?: any) => {
+                console.log(`Setting document ${id} in collection ${this.collectionName}`);
+            }
+        }),
+        where: () => ({
+            orderBy: () => ({
+                limit: () => ({})
+            })
+        })
+    };
+}
\ No newline at end of file
diff --git a/backend/functions/src/shared/logger.ts b/backend/functions/src/shared/logger.ts
new file mode 100644
index 0000000..fa258b5
--- /dev/null
+++ b/backend/functions/src/shared/logger.ts
@@ -0,0 +1,19 @@
+export class Logger {
+    constructor(private name: string) {}
+
+    info(message: string, ...args: any[]) {
+        console.log(`[${this.name}] INFO:`, message, ...args);
+    }
+
+    warn(message: string, ...args: any[]) {
+        console.warn(`[${this.name}] WARN:`, message, ...args);
+    }
+
+    error(message: string, ...args: any[]) {
+        console.error(`[${this.name}] ERROR:`, message, ...args);
+    }
+
+    child(options: { service: string }) {
+        return new Logger(`${this.name}:${options.service}`);
+    }
+}
\ No newline at end of file
diff --git a/backend/functions/src/shared/output-stream.ts b/backend/functions/src/shared/output-stream.ts
new file mode 100644
index 0000000..9ae86aa
--- /dev/null
+++ b/backend/functions/src/shared/output-stream.ts
@@ -0,0 +1,9 @@
+export class OutputServerEventStream {
+    write(data: any) {
+        console.log('OutputServerEventStream write:', data);
+    }
+
+    end() {
+        console.log('OutputServerEventStream ended');
+    }
+}
\ No newline at end of file
diff --git a/backend/functions/src/shared/rpc-reflect.ts b/backend/functions/src/shared/rpc-reflect.ts
new file mode 100644
index 0000000..8e3717e
--- /dev/null
+++ b/backend/functions/src/shared/rpc-reflect.ts
@@ -0,0 +1,5 @@
+export function RPCReflect() {
+    return function (target: any, propertyKey: string | symbol, parameterIndex: number) {
+        console.log(`RPCReflect decorator applied to parameter ${parameterIndex} of ${String(propertyKey)}`);
+    };
+}
\ No newline at end of file
diff --git a/backend/functions/src/shared/services/canvas.ts b/backend/functions/src/shared/services/canvas.ts
new file mode 100644
index 0000000..70787c2
--- /dev/null
+++ b/backend/functions/src/shared/services/canvas.ts
@@ -0,0 +1,32 @@
+import { AsyncService } from 'civkit';
+import { singleton } from 'tsyringe';
+import { Logger } from '../logger';
+
+@singleton()
+export class CanvasService extends AsyncService {
+    logger = this.globalLogger.child({ service: this.constructor.name });
+
+    constructor(protected globalLogger: Logger) {
+        super();
+    }
+
+    override async init() {
+        this.logger.info('CanvasService initialized');
+        this.emit('ready');
+    }
+
+    async loadImage(url: string): Promise<any> {
+        console.log(`Mock: Loading image from ${url}`);
+        return { width: 1000, height: 1000 };
+    }
+
+    fitImageToSquareBox(img: any, size: number): any {
+        console.log(`Mock: Fitting image to square box of size ${size}`);
+        return { width: size, height: size };
+    }
+
+    async canvasToBuffer(canvas: any, format: string): Promise<Buffer> {
+        console.log(`Mock: Converting canvas to buffer with format ${format}`);
+        return Buffer.from('mock image data');
+    }
+}
diff --git a/backend/functions/src/shared/services/rate-limit.ts b/backend/functions/src/shared/services/rate-limit.ts
new file mode 100644
index 0000000..13e0382
--- /dev/null
+++ b/backend/functions/src/shared/services/rate-limit.ts
@@ -0,0 +1,29 @@
+import { AsyncService } from 'civkit';
+
+export interface RateLimitDesc {
+    key: string;
+    limit: number;
+    window: number;
+}
+
+export class RateLimitControl extends AsyncService {
+    constructor() {
+        super();
+    }
+
+    override async init() {
+        // Mock implementation
+        this.emit('ready');
+    }
+
+    async increment(desc: RateLimitDesc): Promise<boolean> {
+        // Mock implementation
+        console.log(`Incrementing rate limit for key: ${desc.key}`);
+        return true;
+    }
+
+    async decrement(desc: RateLimitDesc): Promise<void> {
+        // Mock implementation
+        console.log(`Decrementing rate limit for key: ${desc.key}`);
+    }
+}
diff --git a/backend/functions/src/shared/services/secrets.ts b/backend/functions/src/shared/services/secrets.ts
new file mode 100644
index 0000000..2fc76fd
--- /dev/null
+++ b/backend/functions/src/shared/services/secrets.ts
@@ -0,0 +1,20 @@
+import { AsyncService } from 'civkit';
+import { singleton } from 'tsyringe';
+import { Logger } from '../logger';
+
+@singleton()
+export class SecretExposer extends AsyncService {
+    logger = this.globalLogger.child({ service: this.constructor.name });
+
+    BRAVE_SEARCH_API_KEY: string = 'mock_brave_search_api_key';
+
+    constructor(protected globalLogger: Logger) {
+        super();
+    }
+
+    override async init() {
+        // Mock initialization
+        this.logger.info('SecretExposer initialized');
+        this.emit('ready');
+    }
+}
diff --git a/backend/functions/src/shared/types.ts b/backend/functions/src/shared/types.ts
new file mode 100644
index 0000000..926e5ec
--- /dev/null
+++ b/backend/functions/src/shared/types.ts
@@ -0,0 +1,6 @@
+import { Request, Response } from 'express';
+
+export interface Ctx {
+    req: Request;
+    res: Response;
+}
\ No newline at end of file