Dynamic Claude Sonnet/Opus 4 AI Agent with Web Search & Think Tools

This advanced n8n workflow creates a powerful AI agent powered by Anthropic's latest Claude models: Sonnet 4 for routine tasks and Opus 4 for complex reasoning. It begins with a chat trigger that listens for new messages, followed by a routing agent that analyzes query complexity to dynamically select the most suitable model, ensuring cost-efficiency and high performance.

The core AI agent manages conversations with session-based memory for context retention, invoking tools as needed: web search for real-time data, a 'Think' tool for step-by-step reasoning, and a calculator for numerical computations. This setup enables human-like interactions, handling diverse queries from simple facts to intricate problem-solving.

Benefits include scalability, reduced external dependencies, and consistent JSON-structured outputs for seamless integrations. Ideal use cases: customer support chatbots, research assistants, or automated query handlers in Crypto & Blockchain apps like wallet monitoring, where real-time web data and reasoning enhance alerts and analysis.

In wallet monitoring scenarios, it can fetch live blockchain data via web search, reason through transaction anomalies with the Think tool, and compute balances—saving hours of manual oversight while maintaining conversational context across sessions.