Struct Session 

pub struct Session {
    pub id: Uuid,
    pub tool: String,
    pub tool_version: Option<String>,
    pub started_at: DateTime<Utc>,
    pub ended_at: Option<DateTime<Utc>>,
    pub model: Option<String>,
    pub working_directory: String,
    pub git_branch: Option<String>,
    pub source_path: Option<String>,
    pub message_count: i32,
    pub machine_id: Option<String>,
}

A Session represents a complete human-AI collaboration. This is the primary unit of reasoning history.

Fields

id: Uuid

Unique identifier for this session

tool: String

Which tool created this session (e.g., “claude-code”, “cursor”)

tool_version: Option<String>

Tool version (e.g., “2.0.72”)

started_at: DateTime<Utc>

When the session started

ended_at: Option<DateTime<Utc>>

When the session ended (None if ongoing)

model: Option<String>

The AI model used (may change during session, this is the primary one)

working_directory: String

Working directory when session started

git_branch: Option<String>

Git branch when session started (if in a git repo)

source_path: Option<String>

Original source file path (for re-import detection)

message_count: i32

Number of messages in this session

machine_id: Option<String>

Machine identifier (hostname) where the session was captured. Used for cloud sync to identify which machine created the session. Optional for backwards compatibility with existing sessions.

Trait Implementations

impl Clone for Session

fn clone(&self) -> Session

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Session

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Session

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Session

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

where __S: Serializer,

Serialize this value into the given Serde serializer.