Struct Message 

pub struct Message {
    pub from: String,
    pub content: String,
    pub ts: i64,
    pub id: Option<Uuid>,
    pub reply_to: Option<Uuid>,
    pub agent: bool,
    pub tool: Option<ToolRecord>,
    pub usage: Option<Usage>,
    pub error: bool,
    pub config: Option<ChatConfig>,
    pub extra: Map<String, Value>,
}

Fields

from: String

content: String

ts: i64

id: Option<Uuid>

Unique per message. None on messages written before ids existed.

reply_to: Option<Uuid>

The message this one follows: its parent in the conversation tree. Sibling messages (same parent) are alternate timelines — edits and regenerations append siblings rather than deleting. Uuid::nil() means “first message” (no parent). None on messages written before threading: their implicit parent is the preceding message in ts order, so a legacy transcript reads as one linear chain.

agent: bool

Sent by from’s agent rather than typed by them. Agent messages never trigger agent invocation.

tool: Option<ToolRecord>

A tool round-trip by from’s agent; content is a short human summary (“read_file /notes/todo.md”) for rendering. The record makes the transcript the agent’s complete memory: reopening a chat replays these into model context, so a restarted agent knows everything the live one did.

usage: Option<Usage>

On agent replies: token usage of the turn that produced this message. Chat-lifetime usage is the fold of these over the transcript.

error: bool

A harness-level error (“rate limited”, “network down”) from from’s agent. Rendered as a dim red row; excluded from agent context (the model never saw it).

config: Option<ChatConfig>

A from-authored configuration entry rather than a chat message (no content). Carries this user’s per-chat agent settings; the latest by ts wins. Excluded from rendering and from agent context.

extra: Map<String, Value>

Fields this client doesn’t know about, preserved verbatim so a merge performed by an older client can’t strip them.

Implementations

impl Message

pub fn new(from: String, content: String, ts: i64) -> Self

pub fn config_entry(from: String, ts: i64, config: ChatConfig) -> Self

A from-authored config entry — carries no chat content, isn’t rendered, and never enters agent context.

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'de> Deserialize<'de> for Message

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Message

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

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 Message