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LangChain / RAG / Vector DBs · Lesson

Integrating External APIs as Tools

Connect your RAG system to external APIs and services, allowing agents to fetch real-time data or perform actions.

Agents & External APIs

Agents can do more than just generate text! They can interact with the real world by using special functions called "tools." External APIs are perfect for this, allowing agents to fetch real-time data or perform actions.

Tools for Real-World Interaction

In LangChain, a tool is essentially a Python function that an agent can call. These functions can wrap almost anything:

  • Searching the web
  • Querying a database
  • Sending emails
  • Interacting with an external API

Tools give agents superpowers, extending their capabilities beyond their internal knowledge.

All lessons in this course

  1. LangChain Agents and Tool Concepts
  2. Building Multi-Agent RAG Workflows
  3. Integrating External APIs as Tools
  4. Memory and State in Agentic RAG
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