Enum OutputFormat 

pub enum OutputFormat {
    Json,
    JsonSchema {
        schema: Value,
    },
}

Available on crate feature anthropic-client only.

Output format configuration for structured outputs.

Structured outputs constrain Claude’s responses to follow a specific schema, ensuring valid, parseable output for downstream processing.

This feature requires the beta header structured-outputs-2025-11-13.

Example

use serde_json::json;
use adk_anthropic::OutputFormat;

let output_format = OutputFormat::json_schema(json!({
    "type": "object",
    "properties": {
        "name": { "type": "string" },
        "email": { "type": "string" },
        "plan_interest": { "type": "string" },
        "demo_requested": { "type": "boolean" }
    },
    "required": ["name", "email", "plan_interest", "demo_requested"],
    "additionalProperties": false
}));

Variants

Json

JSON object format — {type: "json_object"}.

JsonSchema

JSON schema format for structured outputs.

Claude will return valid JSON matching the provided schema in response.content[0].text.

Fields

schema: Value

The JSON schema that defines the structure of the response.

Implementations

impl OutputFormat

pub fn json_schema(schema: Value) -> OutputFormat

Create a new JSON schema output format.

Arguments

• schema - A JSON schema that defines the structure of the response.

Example

use serde_json::json;
use adk_anthropic::OutputFormat;

let output_format = OutputFormat::json_schema(json!({
    "type": "object",
    "properties": {
        "summary": { "type": "string" },
        "confidence": { "type": "number" }
    },
    "required": ["summary", "confidence"],
    "additionalProperties": false
}));

Trait Implementations

impl Clone for OutputFormat

fn clone(&self) -> OutputFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OutputFormat

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for OutputFormat

fn deserialize<__D>( __deserializer: __D, ) -> Result<OutputFormat, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for OutputFormat

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for OutputFormat