Enum ContentBlock 

pub enum ContentBlock {
    Text {
        text: String,
    },
    Thinking {
        thinking: String,
        signature: String,
    },
    RedactedThinking {
        data: String,
    },
    ToolUse {
        id: String,
        name: ToolName,
        input: Payload,
    },
    Image(ImageRef),
    ToolResult {
        tool_use_id: String,
        content: String,
        is_error: bool,
        attachments: Vec<ImageRef>,
    },
}

Canonical content block. Tool inputs are Payload — the float ban holds here because these bytes become ledger payloads verbatim.

Thinking and RedactedThinking are carried unchanged end to end: the provider verifies signature against the reasoning it issued, and altering either block earns a 400 that names them as unmodifiable. The block shapes are the city dialect’s, so https://platform.claude.com/docs/en/build-with-claude/thinking is what a change to them has to agree with.

Variants

Text

Fields

text: String

Thinking

Fields

thinking: String

signature: String

RedactedThinking

Fields

data: String

ToolUse

Fields

id: String

name: ToolName

input: Payload

Image(ImageRef)

A picture the model can see. Carries the reference and the dimensions; the bytes are fetched at the wire by whoever is about to send them (gateway::endpoint), so this block stays a thing a ledger can hold.

ToolResult

Fields

tool_use_id: String

content: String

is_error: bool

attachments: Vec<ImageRef>

Pictures the tool produced. Absent from every tool result written before this field existed, which is why it reads as an empty list rather than as a broken record: an old history has to replay.

Trait Implementations

impl Clone for ContentBlock

fn clone(&self) -> Self

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 PartialEq for ContentBlock

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

Equality operator ==.

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

Inequality operator !=.

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.

impl StructuralPartialEq for ContentBlock