Enum CachePlan 

pub enum CachePlan {
    Off,
    ImportedPrefix,
}

Prompt-caching plan applied at the request-build site (B7, SPEC.md D9).

Off is byte-identical to today’s behavior: whatever implicit caching the provider does on its own still applies, but supercode never annotates anything. ImportedPrefix places Anthropic-style cache_control “ephemeral” breakpoints (message-level, not the top-level extra_body passthrough — see provider::apply_cache_plan) on the system message and the last message of a previously-imported session prefix (crate::Agent::load_session), so the large byte-stable prefix a resumed session resends every turn becomes a cache hit instead of a full re-read.

Variants

Off

No cache annotation (today’s behavior). Default outside reduced mode.

ImportedPrefix

Breakpoints on the system message and the last message of the imported prefix (at most 2 of Anthropic’s 4 available slots).

Trait Implementations

impl Clone for CachePlan

fn clone(&self) -> CachePlan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CachePlan

impl Debug for CachePlan

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

Formats the value using the given formatter.

impl Default for CachePlan

fn default() -> CachePlan

Returns the “default value” for a type.

impl Eq for CachePlan

impl PartialEq for CachePlan

fn eq(&self, other: &CachePlan) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CachePlan