Module tool 

Tool: external capabilities an agent can invoke.

This file is where Tool is defined: the Tool trait defines the interface agents use to execute tools, ToolSchema describes the definition exposed to the model, ToolError describes why a call fails; it contains no concrete tools — those are implemented by agent applications (see examples/tool_agent.rs).

Companion component:

• SharedState — a container for cross-tool shared state, injected via ToolContext on Tool::call.

Structs

SharedState

Shared state: a heterogeneous container accessed by type.

ToolContext

Context passed to a tool call.

ToolNamespace

Namespace assigned to a tool by the host application or extension layer.

ToolOutput

Model-visible output produced by a tool.

ToolPolicy

Tool policy metadata declared by the tool author.

ToolSchema

The definition of a tool.

ToolSource

Host-facing metadata describing where a provider-visible tool came from.

Enums

SideEffectLevel

Declared side-effect level for a tool.

ToolError

Reasons a tool call fails.

ToolMemoryPolicy

Memory handling policy for model-visible tool/effect output.

ToolNamespaceKind

Kind of tool namespace.

ToolResult

Result of a tool call.

ToolTrustLevel

Trust level assigned to a tool source.

Traits

Tool

A tool an agent can invoke.