🚀 Smart API Key Management System

A backend system built using FastAPI + MongoDB Atlas + JWT Authentication that allows users to securely generate, manage, and track API keys with usage monitoring.

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📌 Features

• 🔐 User Registration & Authentication
• ♻️ Access & Refresh Token System
• 🔑 API Key Creation & Management
• 📊 API Usage Tracking
• ⏱️ Middleware for Request Timing
• 🌐 MongoDB Atlas Cloud Database Integration

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🛠️ Tech Stack

• Backend: FastAPI
• Database: MongoDB Atlas
• Authentication: JWT (Access + Refresh Tokens)
• Language: Python

🔑 API Endpoints (Total: 9)

🔐 Auth APIs

1. POST /auth/register 👉 Register new user

2. POST /auth/login 👉 Login user → returns Access Token + Refresh Token

3. POST /auth/refresh 👉 Generate new access token using refresh token

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🔑 API Key Management

⚠️ All below endpoints require valid Access Token

4. POST /Api_Mangement/create 👉 Create new API key

5. GET /Api_Mangement/view 👉 Get all API keys

6. GET /Api_Mangement/view/{api_id} 👉 Get single API key

7. DELETE /Api_Mangement/delete/{api_id} 👉 Delete API key

8. PUT /Api_Mangement/update/{api_id} 👉 Update API key status (Active / Inactive)

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📊 Usage Tracker

9. GET /usage_tracker/call_api 👉 Send URL as string → store in database

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⚙️ Setup Instructions (Step-by-Step)

🔹 1. Clone Repository

git clone https://github.com/your-username/your-repo.git
cd your-repo

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🔹 2. Create Virtual Environment

python -m venv myenv
myenv\Scripts\activate   # Windows

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🔹 3. Install Dependencies

pip install -r requirements.txt

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🔹 4. Setup Environment Variables

Create .env file:

MONGO_URL=mongodb+srv://username:password@cluster.mongodb.net/Smart_api_mangement_system
DB_NAME=Smart_api_mangement_system

SECRET_KEY=your_secret_key
ALGORITHM=HS256
ACCESS_TOKEN_EXPIRE_MINUTES=20
REFRESH_TOKEN_EXPIRE_DAYS=7

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🔹 5. Run Server

uvicorn app.main:app --reload

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🌐 Swagger UI (API Testing)

Open browser:

http://127.0.0.1:8000/docs

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🔄 How to Use APIs (Step-by-Step)

✅ Step 1: Register User

• Use /auth/register
• Provide username & password

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✅ Step 2: Login

• Use /auth/login

• Get:

  • Access Token
  • Refresh Token

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✅ Step 3: Access Token for Authorize

copy Access Token

Enter the Access Token Format:

Bearer <your_access_token>

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✅ Step 4: Use Protected APIs

Now you can:

• Create API key
• View API keys
• Update / Delete API key

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🔁 Step 5: Refresh Token

If access token expires:

• Call /auth/refresh
• Get new access token

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📊 Step 6: Track API Usage

• Call /usage_tracker/call_api
• Send URL as string :

example : /ApiKey/home/profile

• Data stored in MongoDB

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⭐ If you like this project

Give it a ⭐ on GitHub!