Glossary

Term	Meaning
Tool declaration	Portable description of a callable capability.
Tool surface	Context-specific set of tools visible to an agent or model.
Tool invocation	One requested or executed tool call.
Execution profile	Description of how a tool is run and which lifecycle operations it supports.
Permission profile	Risk and access facts needed by policy systems or human reviewers.
Native id	Identifier from the backing protocol or provider, preserved by Agent Tool.
Resource ref	Reference to context or bytes that can be fetched by another system.
Artifact ref	Reference to a durable deliverable governed by Agent Artifact.
Evidence ref	Reference to trust, provenance, replay, review, or audit facts.
Policy ref	Reference to a decision, approval, grant, waiver, or risk record.