Struct Annotations 

pub struct Annotations {
    pub audience: Option<Vec<String>>,
    pub priority: Option<f64>,
    pub last_modified: Option<String>,
}

Annotations for resources, prompts, and tools (matches TypeScript Annotations per MCP 2025-11-25). See MCP spec

Fields

audience: Option<Vec<String>>

Target audience for this item: “user”, “assistant”, or both

priority: Option<f64>

Priority hint (0.0 = lowest, 1.0 = highest)

last_modified: Option<String>

ISO 8601 datetime when this item was last modified

Implementations

impl Annotations

pub fn new() -> Annotations

pub fn with_audience(self, audience: Vec<String>) -> Annotations

pub fn with_priority(self, priority: f64) -> Annotations

pub fn with_last_modified(self, last_modified: impl Into<String>) -> Annotations

Trait Implementations

impl Clone for Annotations

fn clone(&self) -> Annotations

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Annotations

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

Formats the value using the given formatter.

impl Default for Annotations

fn default() -> Annotations

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Annotations

fn deserialize<__D>( __deserializer: __D, ) -> Result<Annotations, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Annotations

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

where __S: Serializer,

Serialize this value into the given Serde serializer.