Struct ClientCapabilities 

#[non_exhaustive]
pub struct ClientCapabilities {
    pub experimental: Option<BTreeMap<String, Map<String, Value>>>,
    pub extensions: Option<BTreeMap<String, Map<String, Value>>>,
    pub roots: Option<RootsCapabilities>,
    pub sampling: Option<SamplingCapability>,
    pub elicitation: Option<ElicitationCapability>,
}

Available on crate features mcp and tools only.

Builder

let cap = ClientCapabilities::builder()
    .enable_experimental()
    .build();

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

experimental: Option<BTreeMap<String, Map<String, Value>>>

extensions: Option<BTreeMap<String, Map<String, Value>>>

Optional MCP extensions that the client supports (SEP-1724). Keys are extension identifiers (e.g., "io.modelcontextprotocol/ui"), values are per-extension settings objects. An empty object indicates support with no settings.

roots: Option<RootsCapabilities>

Capability for filesystem roots (deprecated by SEP-2577).

sampling: Option<SamplingCapability>

Capability for LLM sampling requests (SEP-1577, deprecated by SEP-2577).

elicitation: Option<ElicitationCapability>

Capability to handle elicitation requests from servers for interactive user input

Implementations

impl ClientCapabilities

pub fn supports_tasks(&self) -> bool

Returns true if the io.modelcontextprotocol/tasks extension (SEP-2663) is declared in Self::extensions.

impl ClientCapabilities

pub fn builder() -> ClientCapabilitiesBuilder

Create a new ClientCapabilities builder.

Trait Implementations

impl Clone for ClientCapabilities

fn clone(&self) -> ClientCapabilities

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClientCapabilities

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

Formats the value using the given formatter.

impl Default for ClientCapabilities

fn default() -> ClientCapabilities

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ClientCapabilities

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<S> From<ClientCapabilitiesBuilder<S>> for ClientCapabilities

fn from(builder: ClientCapabilitiesBuilder<S>) -> ClientCapabilities

Converts to this type from the input type.

impl JsonSchema for ClientCapabilities

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for ClientCapabilities

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ClientCapabilities

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.

impl StructuralPartialEq for ClientCapabilities