Tool Descriptor

A document or file that specifies an external tool's metadata, available functions, and invocation requirements.

A specific action, function, or operational feature exposed by an external tool for an AI agent or system to execute.

A structured specification that defines a callable function's name, purpose, parameters, input types, constraints, and expected outputs, enabling AI systems to correctly invoke tools and generate valid arguments.

A software component that translates interface calls between external tools and an AI system for standardized execution.

A centralized directory for storing, organizing, and discovering tools and their invocation specifications.