Claude API10 min read
Claude Tool Use: Function Calling With the API
Claude tool use (function calling) lets Claude call tools you define via a JSON schema. The tool_use and tool_result loop, a worked example, and how it ties to MCP.
Claude tool use (function calling) lets Claude call tools you define via a JSON schema. The tool_use and tool_result loop, a worked example, and how it ties to MCP.