Enum ContentBlock 

pub enum ContentBlock {
    Text {
        text: String,
        cache_control: Option<CacheControl>,
    },
    Image {
        source: ImageSource,
    },
    ToolUse {
        id: String,
        name: String,
        input: Value,
    },
    ToolResult {
        tool_use_id: String,
        content: ToolResultContent,
        is_error: bool,
        cache_control: Option<CacheControl>,
    },
    Thinking {
        thinking: String,
        signature: String,
    },
    RedactedThinking {
        data: String,
    },
}

Content blocks used in both requests and responses.

Variants

Text

Plain text.

Fields

text: String

The text content.

cache_control: Option<CacheControl>

Prompt-cache breakpoint marker (last-message placement, plan §4.3).

Image

An image.

Fields

source: ImageSource

Where the image bytes come from.

ToolUse

A tool call emitted by the assistant.

Fields

id: String

Provider-assigned id — preserved verbatim (ADR-0007, plan §4.5).

name: String

The tool’s wire name.

input: Value

The tool arguments.

ToolResult

A tool result, carried in a user turn.

Fields

tool_use_id: String

The id of the tool_use this answers.

content: ToolResultContent

The result payload.

is_error: bool

Whether the tool call failed. Our delta over grok’s structs — the protocol carries it (ADR-0013) and Anthropic honours it.

cache_control: Option<CacheControl>

Prompt-cache breakpoint marker.

Thinking

Assistant extended thinking. Replayed verbatim with its signature on subsequent requests (plan §4.2) — Anthropic 400s a thinking + tool_use turn whose signed thinking block is not echoed back.

Fields

thinking: String

The reasoning text.

signature: String

The opaque signature required for replay.

RedactedThinking

Encrypted assistant thinking, replayed verbatim like signed thinking. Delta over grok’s structs: observed live during the Task-12 smoke — without this variant the whole response fails to deserialize.

Fields

data: String

The encrypted payload.

Trait Implementations

impl Clone for ContentBlock

fn clone(&self) -> ContentBlock

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContentBlock

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContentBlock

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ContentBlock

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

where __S: Serializer,

Serialize this value into the given Serde serializer.