Part of Build with Claude Using Code and Guides
Engineering Blueprint
Extend Claude with Tools and Functions
Patterns for integrating external tools, APIs, and functions to extend Claude's capabilities beyond text.
What problem does this solve?
Teaches how to wire Claude to external systems and APIs so it can perform actions beyond generating text. Examples include customer service agents that query support systems, calculators for numerical operations, and SQL query builders that execute against live databases.
How does it work?
- Define your tools with clear descriptions and parameters. 2. Provide Claude with tool definitions in your API request. 3. Claude decides when and how to call tools. 4. Return results and let Claude continue the conversation. Output: an agentic loop where Claude autonomously uses tools to accomplish tasks.
Included Skills
No skills in this group
What's required to run this?
Tool use examples assume HTTP client libraries for API integration. SQL example uses SQLite.
Key Features
Customer service agent
Reference implementation of a support agent that queries and updates customer data
Calculator integration
Wire Claude to perform precise calculations and mathematical operations
SQL execution
Let Claude generate and execute SQL queries directly against databases
About This Blueprint
- Industry
- Technology
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