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Some scripts use **Google Vertex AI** (Gemini) and **Serper** for web search; others are offline demos with simulated LLM steps.\n\n## Prerequisites\n\n- Python 3.11+ recommended\n- A Google Cloud project with the **Vertex AI API** enabled\n- Application Default Credentials (ADC), e.g. `gcloud auth application-default login`\n- A [Serper](https://serper.dev/) API key for `SerperDevTool` where used\n\n## Setup\n\n```bash\npython3 -m venv .venv\nsource .venv/bin/activate   # Windows: .venv\\Scripts\\activate\npip install -r requirements.txt\ncp .env.example .env\n# Edit .env with your SERPER_API_KEY, GOOGLE_CLOUD_PROJECT, and GOOGLE_CLOUD_REGION\n```\n\n## Scripts\n\n| File | Description |\n|------|-------------|\n| `multi-agent.py` | Sequential crew: researcher (search) + writer, Vertex Gemini + Serper |\n| `conditional_crew_agent.py` | Hierarchical news crew with sentiment-based routing |\n| `hirerachical-crew-agent.py` | Hierarchical marketing-style crew |\n| `coding_agent_crew.py` | Planner + developer with `FileWriterTool` and Serper |\n| `research_agent.py` | Offline orchestration demo (simulated search/summarize pipeline) |\n| `coding_agent.py` | Offline coding manager demo (simulated write/review loop) |\n| `greetings.py` | Small CLI sample (can be produced by the coding crew demo) |\n\nRun an example:\n\n```bash\npython multi-agent.py\n```\n\n## Security\n\n- **Do not commit `.env`.** It is listed in `.gitignore`.\n- Use `.env.example` as a template only (no real secrets).\n- If API keys or project IDs were ever committed to git, **rotate those keys** and scrub history if the repository was public.\n\n## License\n\nAdd a license if you publish this repository publicly.\n","readmeExcerpt":"Agent research system Small experiments with **CrewAI** multi-agent workflows: sequential crews, hierarchical crews with a manager agent, and a coding crew that plans and writes files. 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