Struct FunctionResponse 

pub struct FunctionResponse {
    pub name: String,
    pub id: Option<String>,
    pub response: Option<Value>,
    pub parts: Vec<FunctionResponsePart>,
}

A response from a function

Fields

name: String

The name of the function

id: Option<String>

Unique identifier correlating this response with its FunctionCall.

Gemini 3.x models enforce strict response matching: every FunctionResponse must echo the id from the corresponding FunctionCall, the name must match, and the response count must equal the call count. Mismatches cause the model to return empty responses with finish_reason: STOP. Earlier models ignore this field.

response: Option<Value>

The response from the function This must be a valid JSON object

parts: Vec<FunctionResponsePart>

Multimodal parts nested inside the functionResponse wire object. Contains inlineData and/or fileData entries that accompany the JSON response. Gemini 3 expects these inside the functionResponse, not as sibling Content parts.

Implementations

impl FunctionResponse

pub fn new(name: impl Into<String>, response: Value) -> Self

Create a new function response with a JSON value

pub fn with_id(self, id: impl Into<String>) -> Self

Set the id correlating this response with its FunctionCall.

Required for Gemini 3.x strict response matching — pass the id from the originating function call.

pub fn with_inline_data( name: impl Into<String>, response: Value, inline_data: Vec<Blob>, ) -> Self

Create with JSON response and inline data blobs.

pub fn with_file_data( name: impl Into<String>, response: Value, file_data: Vec<FileDataRef>, ) -> Self

Create with JSON response and file data references.

pub fn inline_data_only(name: impl Into<String>, inline_data: Vec<Blob>) -> Self

Create with inline data only (no JSON response).

pub fn from_schema<Response>( name: impl Into<String>, response: Response, ) -> Result<Self, Error>

where Response: JsonSchema + Serialize,

Create a new function response from a serializable type that will be parsed as JSON

pub fn from_str( name: impl Into<String>, response: impl Into<String>, ) -> Result<Self, Error>

Create a new function response with a string that will be parsed as JSON

Trait Implementations

impl Clone for FunctionResponse

fn clone(&self) -> FunctionResponse

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FunctionResponse

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FunctionResponse

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for FunctionResponse

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for FunctionResponse

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 FunctionResponse