Struct ToolCallStartEvent 

pub struct ToolCallStartEvent {
    pub base: BaseEvent,
    pub tool_call_id: ToolCallId,
    pub tool_call_name: String,
    pub parent_message_id: Option<MessageId>,
    pub subagent_run_id: Option<SubagentRunId>,
}

Opens a tool call. Arguments follow as TOOL_CALL_ARGS deltas.

Fields

base: BaseEvent

Timestamp and raw provider event.

tool_call_id: ToolCallId

Id correlating this call with its args, end and result.

tool_call_name: String

Name of the tool being called.

parent_message_id: Option<MessageId>

The assistant message that requested the call.

A JSON null here deserializes to None: producers whose serializers emit nulls for absent optionals (notably the .NET Microsoft Agent Framework adapter) must not abort a run on their first tool call.

subagent_run_id: Option<SubagentRunId>

The subagent that produced this event; absent means the parent agent. A JSON null is rejected — see crate::event::subagent. A tool call belongs to the message parent_message_id names, so a tag that disagrees with that message’s owner is a protocol error; an untagged call inherits the message’s owner.

Implementations

impl ToolCallStartEvent

pub fn new( tool_call_id: impl Into<ToolCallId>, tool_call_name: impl Into<String>, ) -> Self

Opens a call to tool_call_name.

Trait Implementations

impl Clone for ToolCallStartEvent

fn clone(&self) -> ToolCallStartEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ComposeSchema for ToolCallStartEvent

fn compose(generics: Vec<RefOr<Schema>>) -> RefOr<Schema>

impl Debug for ToolCallStartEvent

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

Formats the value using the given formatter.

impl Default for ToolCallStartEvent

fn default() -> ToolCallStartEvent

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ToolCallStartEvent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<ToolCallStartEvent> for Event

fn from(payload: ToolCallStartEvent) -> Self

Converts to this type from the input type.

impl JsonSchema for ToolCallStartEvent

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 ToolCallStartEvent

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

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 ToolCallStartEvent

impl ToSchema for ToolCallStartEvent

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

Return name of the schema.

fn schemas(schemas: &mut Vec<(String, RefOr<Schema>)>)

Implement reference [utoipa::openapi::schema::Schema]s for this type.