Struct ClientCapabilities 

pub struct ClientCapabilities {
    pub mcp_apps: Option<JsonObject>,
}

Optional capabilities a client declares during initialize.

Each field is a presence flag: an empty object {} means “supported”, absence means “not supported”. Sub-fields on individual capabilities are reserved for future per-capability options.

Fields

mcp_apps: Option<JsonObject>

Client can render MCP Apps — i.e. it can host the View sandbox, run the ui/* protocol against it, and forward mcp://-channel traffic on the App’s behalf.

Hosts SHOULD only populate {@link McpServerCustomization.mcpApp | McpServerCustomization.mcpApp} (and expose the corresponding {@link McpServerCustomization.channel | mcp:// channel}) when this capability is declared. Clients that omit it MUST treat App-bearing tool calls as ordinary MCP tool calls.

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

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<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ClientCapabilities

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ClientCapabilities