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Template environment variable configuration\n├── .gitignore            # Specifies untracked files and directories\n├── Dockerfile            # Multi-stage container build definition\n├── README.md             # Project documentation and setup guide\n├── docker-compose.yml   # Container orchestration specification\n├── backend/              # FastAPI Python backend application\n│   ├── main.py           # Application entrypoint and startup handlers\n│   ├── requirements.txt  # Python package dependencies\n│   ├── api/              # HTTP REST routes and endpoints\n│   │   ├── auth.py\n│   │   ├── cron.py\n│   │   ├── news.py\n│   │   └── performance.py\n│   ├── core/             # Database, settings, constants, and JWT security\n│   │   ├── config.py\n│   │   ├── constants.py\n│   │   ├── database.py\n│   │   └── security.py\n│   ├── domain/           # Multi-agent crew orchestrator\n│   │   └── crew.py\n│   └── services/         # Modular custom tool providers\n│       ├── llm_providers/\n│       └── tools/\n│           ├── search/\n│           ├── sheets/\n│           ├── slack/\n│           └── summarizer/\n└── frontend/             # React, TypeScript, and Tailwind CSS web application\n    ├── index.html\n    ├── package.json\n    ├── postcss.config.js\n    ├── tailwind.config.js\n    ├── tsconfig.json\n    ├── vite.config.ts\n    ├── public/           # Static favicons and public assets\n    └── src/              # React pages, components, modals, and API client\n```\n\n---\n\n## Technical Features\n\n* **Multi-Agent CrewAI Orchestration**: Employs dedicated researcher, editor, and quality assurance agents using Groq Llama 3.3 70B to discover, synthesize, and verify news stories.\n* **Custom Tool Providers**: Built directly against external search APIs, Slack incoming webhooks, and Google Sheets API without relying on built-in tool wrappers.\n* **Smart Article Summary Cache**: Database-backed caching system that reuses verified summaries for matching article URLs and publication dates, reducing LLM token usage.\n* **Dual Database Persistence**: Automatic connection management supporting Supabase Cloud PostgreSQL with seamless local SQLite database fallback.\n* **Human-Readable Distribution**: Publishes structured Slack markdown messages with direct article URLs and logs rows into Google Sheets spreadsheets.\n\n---\n\n## Local Setup and Installation\n\n### Prerequisites\n\n* Docker and Docker Compose\n* Python 3.11 or higher\n* Node.js 20 or higher\n* Active API keys for Groq, Serper, Slack Incoming Webhook, and Google Sheets\n\n### 1. Clone the Repository\n\n```bash\ngit clone https://github.com/Wahajj-Khalid/nexus-simple-ai-news-automation-bot-using-multi-agent-pipeline-via-crewai\ncd nexus-simple-ai-news-automation-bot-using-multi-agent-pipeline-via-crewai\n```\n\n### 2. Configure Environment Variables\n\n```bash\ncp .env.example .env\n```\n\nOpen `.env` and fill in your active API credentials and database connection string.\n\n### 3. Native Local Installation (Optional)\n\nInstall frontend dependencies and build production static assets:\n\n```bash\ncd frontend\nnpm install\nnpm run build\ncd ..\n```\n\nInstall backend dependencies in a Python virtual environment:\n\n```bash\npython3 -m venv venv\nsource venv/bin/activate\npip install -r backend/requirements.txt\n```\n\n---\n\n## Running the Application Locally\n\n### Option A: Running via Docker Compose (Recommended)\n\n```bash\ndocker-compose up --build\n```\n\nAccess the application in your web browser at `http://localhost:8000`.\n\n### Option B: Running via Native Command\n\n```bash\nuvicorn backend.main:app --host 0.0.0.0 --port 8000 --reload\n```\n\n---\n\n## Known Limitations and Technical Considerations\n\n* **API Quotas and Rate Limits**: High-frequency news fetching depends on active Serper search and Groq API quotas.\n* **Serverless Execution Timeouts**: Multi-agent CrewAI runs take 25 to 40 seconds. Deploying the backend on containerized Docker hosts (such as Render, Railway, or Fly.io) prevents serverless function timeouts.\n* **Ephemeral Session Keys**: User-supplied API keys entered through the web interface are held strictly in active runtime React component memory and automatically clear when closing the browser tab or signing out.\n\n---","readmeExcerpt":"Nexus An autonomous multi-agent newsroom assistant and automated distribution pipeline built with CrewAI, FastAPI, Groq LLM, and React TypeScript adapted from the Nexus UI architecture. 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