Struct Resource 

pub struct Resource {
    pub name: String,
    pub title: Option<String>,
    pub uri: String,
    pub description: Option<String>,
    pub mime_type: Option<String>,
    pub annotations: Option<Annotations>,
    pub size: Option<u64>,
    pub meta: Option<HashMap<String, Value>>,
}

Resource definition per MCP 2025-06-18 specification

Fields

name: String

Resource name (programmatic identifier)

title: Option<String>

Display title for UI contexts (optional, falls back to name if not provided)

uri: String

The URI of this resource

description: Option<String>

A description of what this resource represents This can be used by clients to improve the LLM’s understanding of available resources

mime_type: Option<String>

The MIME type of this resource, if known

annotations: Option<Annotations>

Optional annotations for the client

size: Option<u64>

The size of the raw resource content, in bytes (before base64 encoding or tokenization), if known This can be used by Hosts to display file sizes and estimate context window usage

meta: Option<HashMap<String, Value>>

General metadata field for extensions and custom data

Trait Implementations

impl Clone for Resource

fn clone(&self) -> Resource

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Resource

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Resource

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Resource

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.