Agent Skills · Schema

ToolCall

An AI agent's invocation of a tool skill with specific input parameters.

Agent SkillsAI AgentsTool UseFunction CallingMCPAgentic AIAutomation

Properties

Name Type Description
id string Unique identifier for this tool call instance.
type string Content block type, always tool_use.
name string Name of the tool being called.
input object Input parameters provided to the tool, conforming to the tool's input_schema.
View JSON Schema on GitHub