Enum ParentContextPolicy 

#[non_exhaustive]
pub enum ParentContextPolicy {
    Inherit,
    InheritSanitized,
    None,
}

Controls how the parent agent’s conversation history is sanitized before passing to a spawned sub-agent.

Prompt injection is a documented attack vector when the parent history contains untrusted content from web scrapes, tool results, or A2A messages. InheritSanitized is the safe default: messages pass through ContentSanitizer (in zeph-sanitizer) before injection.

Examples

[subagent]
parent_context_policy = "inherit_sanitized"   # default

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Inherit

Pass the parent history verbatim — legacy behaviour, no sanitization.

InheritSanitized

Sanitize text parts of each message through the IPI pipeline before injection.

None

Do not inject any parent history into the sub-agent context.

Trait Implementations

impl Clone for ParentContextPolicy

fn clone(&self) -> ParentContextPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ParentContextPolicy

impl Debug for ParentContextPolicy

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

Formats the value using the given formatter.

impl Default for ParentContextPolicy

fn default() -> ParentContextPolicy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ParentContextPolicy

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ParentContextPolicy

impl PartialEq for ParentContextPolicy

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

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 ParentContextPolicy