Struct SessionEvent 

pub struct SessionEvent {
    pub session_id: String,
    pub proxy: String,
    pub started_at: i64,
    pub client_name: Option<String>,
    pub client_version: Option<String>,
    pub client_platform: Option<String>,
}

Emitted once per MCP session, when the proxy intercepts the initialize handshake.

The clientInfo field in the MCP initialize request is the authoritative source of client identity — we don’t guess from headers or user-agent strings.

Fields

session_id: String

MCP session ID — primary key in the sessions table.

proxy: String

Which proxy this session connected through.

started_at: i64

Unix milliseconds (UTC) of the initialize request.

client_name: Option<String>

Client name from clientInfo.name (e.g., “claude-desktop”, “cursor”). None if the client omits clientInfo (non-compliant but possible).

client_version: Option<String>

Client version from clientInfo.version (e.g., “1.2.0”).

client_platform: Option<String>

Normalized platform identifier derived from client_name. Values: “claude”, “chatgpt”, “vscode”, “cursor”, “unknown”. Normalization happens at write time via a static lookup table.

Trait Implementations

impl Debug for SessionEvent

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

Formats the value using the given formatter.