Struct ToolAnnotations 

pub struct ToolAnnotations {
    pub read_only: bool,
    pub destructive: bool,
    pub idempotent: bool,
    pub open_world: bool,
    pub requires_confirmation: bool,
}

Behavioral annotations for tools (MCP-compatible).

These hints inform the runtime about a tool’s side effects, enabling policy enforcement and user confirmation flows.

Fields

read_only: bool

Tool does not modify its environment.

destructive: bool

Tool may perform destructive updates.

idempotent: bool

Repeated calls with same args produce same result.

open_world: bool

Tool interacts with external entities (network, APIs).

requires_confirmation: bool

Tool requires user confirmation before execution.

Trait Implementations

impl Clone for ToolAnnotations

fn clone(&self) -> ToolAnnotations

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ToolAnnotations

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ToolAnnotations

fn default() -> ToolAnnotations

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ToolAnnotations

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ToolAnnotations

fn eq(&self, other: &ToolAnnotations) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ToolAnnotations

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for ToolAnnotations

impl StructuralPartialEq for ToolAnnotations