Struct AgentConfigOverlay 

pub struct AgentConfigOverlay {
    pub system_prompt: Option<String>,
    pub capabilities: Vec<CapabilityRef>,
    pub initial_files: Vec<InitialFile>,
    pub network_access: Option<NetworkAccessList>,
    pub default_model_id: Option<ModelId>,
    pub tools: Vec<ToolDefinition>,
    pub max_iterations: Option<usize>,
    pub parallel_tool_calls: Option<bool>,
    pub mcp_servers: ScopedMcpServers,
}

A composable configuration layer.

Produced by Harness, Agent, or Session via From<&T>. Layers merge bottom-up into a single effective config for RuntimeAgent building.

Fields

system_prompt: Option<String>

System prompt fragment for this layer.

capabilities: Vec<CapabilityRef>

Capabilities with per-layer configuration.

initial_files: Vec<InitialFile>

Starter files for the session filesystem.

network_access: Option<NetworkAccessList>

Network access restrictions.

default_model_id: Option<ModelId>

Default model ID for this layer.

tools: Vec<ToolDefinition>

Tool definitions (client-side or capability-provided).

max_iterations: Option<usize>

Max iterations per turn.

parallel_tool_calls: Option<bool>

Request-level parallel tool calling preference (EVE-598).

mcp_servers: ScopedMcpServers

Remote MCP servers scoped to this layer.

Implementations

impl AgentConfigOverlay

pub fn merge(self, overlay: AgentConfigOverlay) -> AgentConfigOverlay

Merge an overlay on top of this base layer, producing a new effective layer.

This is the core composition operation. Each field follows its own merge semantic (see module-level docs). The result represents the combined configuration of both layers.

pub fn fold( layers: impl IntoIterator<Item = AgentConfigOverlay>, ) -> AgentConfigOverlay

Fold multiple layers bottom-up into a single effective layer.

Layers are applied in order: the first layer is the base, each subsequent layer is merged on top.

Trait Implementations

impl Clone for AgentConfigOverlay

fn clone(&self) -> AgentConfigOverlay

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AgentConfigOverlay

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

Formats the value using the given formatter.

impl Default for AgentConfigOverlay

fn default() -> AgentConfigOverlay

Returns the “default value” for a type.

impl From<&AgentDefinition> for AgentConfigOverlay

fn from(a: &AgentDefinition) -> Self

Converts to this type from the input type.

impl From<&ExecutionSession> for AgentConfigOverlay

fn from(s: &ExecutionSession) -> Self

Converts to this type from the input type.

impl From<&HarnessDefinition> for AgentConfigOverlay

fn from(h: &HarnessDefinition) -> Self

Converts to this type from the input type.