Enum ResponseStreamEvent 

pub enum ResponseStreamEvent {
    ResponseCreated {
        sequence_number: Option<u64>,
        response: Response,
    },
    ResponseInProgress {
        sequence_number: Option<u64>,
        response: Response,
    },
    ResponseCompleted {
        sequence_number: Option<u64>,
        response: Response,
    },
    ResponseIncomplete {
        sequence_number: Option<u64>,
        response: Response,
    },
    ResponseFailed {
        sequence_number: Option<u64>,
        response: Response,
    },
    Error {
        sequence_number: Option<u64>,
        message: Option<String>,
        code: Option<String>,
        param: Option<String>,
    },
    OutputItemAdded {
        sequence_number: Option<u64>,
        output_index: Option<u32>,
        item: ResponseOutputItem,
    },
    OutputItemDone {
        sequence_number: Option<u64>,
        output_index: Option<u32>,
        item: ResponseOutputItem,
    },
    ContentPartAdded {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        part: EventContentPart,
    },
    ContentPartDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        part: EventContentPart,
    },
    OutputTextDelta {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        delta: String,
    },
    OutputTextDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        text: String,
    },
    ReasoningTextDelta {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        delta: String,
    },
    ReasoningTextDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        content_index: Option<u32>,
        text: String,
    },
    FunctionCallArgumentsDelta {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        delta: String,
    },
    FunctionCallArgumentsDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        arguments: String,
    },
    CustomToolCallInputDelta {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        delta: String,
    },
    CustomToolCallInputDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        input: String,
    },
    WebSearchCallInProgress {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    WebSearchCallSearching {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    WebSearchCallCompleted {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    McpCallArgumentsDelta {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        delta: String,
    },
    McpCallArgumentsDone {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
        arguments: String,
    },
    McpCallCompleted {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    FileSearchCallInProgress {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    FileSearchCallSearching {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    FileSearchCallCompleted {
        sequence_number: Option<u64>,
        item_id: Option<String>,
        output_index: Option<u32>,
    },
    Other,
}

One event of a streamed Responses API call.

Use Self::final_response to extract the finished Response from the terminal response.completed / response.incomplete / response.failed events.

Variants

ResponseCreated

First event: the response was created, status in_progress.

Fields

sequence_number: Option<u64>

response: Response

ResponseInProgress

The response is being generated.

Fields

sequence_number: Option<u64>

response: Response

ResponseCompleted

The response completed normally; final event with the full response object including usage.

Fields

sequence_number: Option<u64>

response: Response

ResponseIncomplete

The response was truncated (e.g. max_output_tokens reached); final event with the full response object.

Fields

sequence_number: Option<u64>

response: Response

ResponseFailed

The response failed; final event with the full response object including the error details.

Fields

sequence_number: Option<u64>

response: Response

Error

An error event emitted mid-stream.

Fields

sequence_number: Option<u64>

message: Option<String>

A human-readable description of the error.

code: Option<String>

The machine-readable error code.

param: Option<String>

The request parameter that caused the error, if any.

OutputItemAdded

An output item (reasoning, message, tool call, …) started.

Fields

sequence_number: Option<u64>

output_index: Option<u32>

The index of the item in the output array.

item: ResponseOutputItem

The item that was added.

OutputItemDone

An output item completed.

Fields

sequence_number: Option<u64>

output_index: Option<u32>

item: ResponseOutputItem

The completed item.

ContentPartAdded

A content part started within an output item.

Fields

sequence_number: Option<u64>

item_id: Option<String>

The ID of the item the content part belongs to.

output_index: Option<u32>

content_index: Option<u32>

The index of the content part within the item.

part: EventContentPart

The content part that was added.

ContentPartDone

A content part completed.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

content_index: Option<u32>

part: EventContentPart

The completed content part.

OutputTextDelta

An incremental text delta of an output message.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

content_index: Option<u32>

delta: String

The incremental text.

OutputTextDone

The full output text of a message content part.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

content_index: Option<u32>

text: String

The complete text.

ReasoningTextDelta

An incremental reasoning (chain-of-thought) text delta.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

content_index: Option<u32>

delta: String

The incremental reasoning text.

ReasoningTextDone

The full reasoning (chain-of-thought) text of a reasoning item.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

content_index: Option<u32>

text: String

The complete reasoning text.

FunctionCallArgumentsDelta

An incremental delta of function call arguments.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

delta: String

The incremental arguments JSON fragment.

FunctionCallArgumentsDone

The full arguments of a function call.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

arguments: String

The complete arguments JSON string.

CustomToolCallInputDelta

An incremental delta of custom tool call input (e.g. the apply_patch tool).

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

delta: String

The incremental input fragment.

CustomToolCallInputDone

The full input of a custom tool call.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

input: String

The complete input.

WebSearchCallInProgress

A server-side web search started.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

WebSearchCallSearching

A server-side web search is searching.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

WebSearchCallCompleted

A server-side web search completed.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

McpCallArgumentsDelta

Qwen: an incremental delta of MCP tool call arguments.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

delta: String

The incremental arguments JSON fragment.

McpCallArgumentsDone

Qwen: the full arguments of an MCP tool call.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

arguments: String

The complete arguments JSON string.

McpCallCompleted

Qwen: an MCP tool call completed.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

FileSearchCallInProgress

Qwen: a knowledge-base search started.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

FileSearchCallSearching

Qwen: a knowledge-base search is searching.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

FileSearchCallCompleted

Qwen: a knowledge-base search completed.

Fields

sequence_number: Option<u64>

item_id: Option<String>

output_index: Option<u32>

Other

Any event type not covered by the variants above.

Implementations

impl ResponseStreamEvent

pub fn final_response(&self) -> Option<&Response>

Returns the final response object if this is one of the terminal events (response.completed, response.incomplete, response.failed).

Trait Implementations

impl Clone for ResponseStreamEvent

fn clone(&self) -> ResponseStreamEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ResponseStreamEvent

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ResponseStreamEvent

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FromStr for ResponseStreamEvent

type Err = OapiError

The associated error which can be returned from parsing.

fn from_str(content: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.