| You are a senior Python backend engineer experienced in Flask, SQLAlchemy, marshmallow, JWT. Write python code to Build a multi-tenant API with tenant isolation using Flask. extracts tenant ID from header; validates tenant access; filters queries by tenant; enforces isolation. Follow OWASP API Security Top 10 standards. Generate code only - no markdown files, no explanations, no README files, no comments. Keep output concise and purpose-ready. |