Struct ProgressToken 

pub struct ProgressToken(pub Value);

The progress token an MCP client passes in tools/call params _meta.progressToken. Spec allows EITHER a string OR a number; the server echoes back whatever shape the client sent. Held as serde_json::Value so we don’t lose the original wire shape on the round-trip.

Created from the request params._meta.progressToken JSON value via ProgressToken::from_meta; the dispatcher’s handle_tools_call is the sole caller.

Tuple Fields

0: Value

Implementations

impl ProgressToken

pub fn from_meta(params: &Value) -> Option<Self>

Read _meta.progressToken from the tools/call params JSON blob. Returns None if either the _meta key is absent, the progressToken key is absent, or the value is null. The spec only permits string and number — any other JSON type returns None so unexpected shapes are treated as “client did not request progress”.

pub fn as_value(&self) -> &Value

The wire-shape value to echo back in params.progressToken of every emitted notifications/progress envelope.

Trait Implementations

impl Clone for ProgressToken

fn clone(&self) -> ProgressToken

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProgressToken

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ProgressToken

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ProgressToken

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

where __S: Serializer,

Serialize this value into the given Serde serializer.