Struct ToolContext 

pub struct ToolContext<'a> {
    pub capability: CapabilityContext<'a>,
    pub permissions: &'a dyn PermissionChecker,
    pub resources: &'a dyn ToolResources,
    pub cancellation: Option<TurnCancellation>,
}

Runtime context passed to every Tool::invoke call.

Provides the tool with access to session/turn metadata, the active permission checker, shared resources, and a cancellation signal so the tool can abort long-running work when a turn is cancelled.

Fields

capability: CapabilityContext<'a>

Capability-layer context carrying session and turn identifiers.

permissions: &'a dyn PermissionChecker

The active permission checker for sub-operations the tool may perform.

resources: &'a dyn ToolResources

Shared resources (e.g. database handles, config) injected by the host.

cancellation: Option<TurnCancellation>

Signal that the current turn has been cancelled by the user.