Struct ContextUsage 

pub struct ContextUsage {
    pub model: String,
    pub messages: usize,
    pub message_tokens: u64,
    pub tool_count: usize,
    pub tool_schema_tokens: u64,
    pub request_tokens: u64,
    pub projected_tokens: u64,
    pub response_reserve_tokens: u64,
    pub context_limit: Option<u64>,
    pub remaining_tokens: u64,
    pub used_pct: u32,
    pub fits: bool,
}

BP-4 (catalog:109 “Context-usage introspection”): the live context-window accounting Agent::context_usage reports — cc’s /context grid and cx’s /status + get_context_remaining in one shape, over the numbers resume --dry-run’s preflight already computes.

Every token figure is the SAME estimate the context guard enforces (crate::tokens), so what this reports and what refuses an oversized turn can never disagree.

Fields

model: String

The model the accounting is against.

messages: usize

Messages in the projected request view (reduction stubs included).

message_tokens: u64

Estimated tokens for those messages.

tool_count: usize

Tools advertised on the next request.

tool_schema_tokens: u64

Estimated tokens for the serialized tool-schema array — a real part of the wire request, and the half a message-only count misses.

request_tokens: u64

message_tokens + tool_schema_tokens.

projected_tokens: u64

request_tokens with the guard’s safety margin applied — the figure the context guard actually compares.

response_reserve_tokens: u64

Headroom the guard reserves for the model’s own reply.

context_limit: Option<u64>

The model’s context window, when known.

remaining_tokens: u64

Tokens still available after the reply reserve, 0 when unknown.

used_pct: u32

projected_tokens as a whole percentage of the window (rounded), 0 when the window is unknown. An integer so this whole struct stays Eq-comparable on the frontend wire.

fits: bool

Whether the next request would pass the context guard.

Implementations

impl ContextUsage

pub fn summary_line(&self) -> String

One human line, the shape a /context command prints.

Trait Implementations

impl Clone for ContextUsage

fn clone(&self) -> ContextUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContextUsage

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ContextUsage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for ContextUsage

impl PartialEq for ContextUsage

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ContextUsage

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 ContextUsage