Struct InitMessage 

pub struct InitMessage {

    pub session_id: String,
    pub cwd: Option<String>,
    pub model: Option<String>,
    pub tools: Vec<String>,
    pub mcp_servers: Vec<Value>,
    pub slash_commands: Vec<String>,
    pub agents: Vec<String>,
    pub plugins: Vec<PluginInfo>,
    pub skills: Vec<Value>,
    pub claude_code_version: Option<String>,
    pub api_key_source: Option<ApiKeySource>,
    pub output_style: Option<OutputStyle>,
    pub permission_mode: Option<InitPermissionMode>,
    pub uuid: Option<String>,
    pub memory_paths: Option<MemoryPaths>,
    pub fast_mode_state: Option<String>,
    pub fast_mode_disabled_reason: Option<FastModeDisabledReason>,
    pub mcp_server_errors: Option<Vec<McpServerError>>,
    pub analytics_disabled: Option<bool>,
    pub product_feedback_disabled: Option<bool>,
    pub betas: Vec<String>,
    pub capabilities: Vec<String>,
    pub plugin_errors: Vec<PluginDiagnostic>,
    pub plugin_warnings: Vec<PluginDiagnostic>,
}

Init system message data - sent at session start

Fields

session_id: String

Session identifier

cwd: Option<String>

Current working directory

model: Option<String>

Model being used

tools: Vec<String>

List of available tools

mcp_servers: Vec<Value>

MCP servers configured

slash_commands: Vec<String>

Available slash commands (e.g., “compact”, “cost”, “review”)

agents: Vec<String>

Available agent types (e.g., “Bash”, “Explore”, “Plan”)

plugins: Vec<PluginInfo>

Installed plugins

skills: Vec<Value>

Installed skills

claude_code_version: Option<String>

Claude Code CLI version

api_key_source: Option<ApiKeySource>

How the API key was sourced

output_style: Option<OutputStyle>

Output style

permission_mode: Option<InitPermissionMode>

Permission mode

uuid: Option<String>

Message-level unique identifier

memory_paths: Option<MemoryPaths>

Memory storage paths (e.g., {“auto”: “/path/to/memory/”})

fast_mode_state: Option<String>

Fast mode toggle state (e.g., “off”)

fast_mode_disabled_reason: Option<FastModeDisabledReason>

Why fast mode can’t serve right now. Absent when nothing blocks it.

mcp_server_errors: Option<Vec<McpServerError>>

MCP server config entries (from --mcp-config) that failed validation and were skipped. Affected servers are absent from mcp_servers.

analytics_disabled: Option<bool>

Whether analytics collection is disabled for this session.

product_feedback_disabled: Option<bool>

Whether product-feedback prompts are disabled for this session.

betas: Vec<String>

API beta flags active for the session.

capabilities: Vec<String>

Open-set protocol capability names supported by this CLI.

plugin_errors: Vec<PluginDiagnostic>

Plugin load errors.

plugin_warnings: Vec<PluginDiagnostic>

Plugin load warnings.

Trait Implementations

impl Clone for InitMessage

fn clone(&self) -> InitMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InitMessage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for InitMessage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for InitMessage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.