Struct ContextWindowExceeded 

pub struct ContextWindowExceeded {
    pub estimated_tokens: usize,
    pub model_context_window: usize,
    pub raw_estimated_tokens: usize,
    pub system_tokens: usize,
    pub tool_schema_tokens: usize,
}

The complete provider-facing request cannot fit the active model’s capacity.

Fields

estimated_tokens: usize

The count the refusal was decided on: the raw estimate, scaled up by the calibration ratio when provider-reported usage supplied one.

model_context_window: usize

raw_estimated_tokens: usize

The same request’s raw estimate, before calibration. The shares below are parts of this total, never of estimated_tokens.

system_tokens: usize

Raw estimate of the leading system messages’ share of the request.

tool_schema_tokens: usize

Raw estimate of the native tool schemas’ share of the request; 0 when the request carried no native tools.

Implementations

impl ContextWindowExceeded

pub fn breakdown(&self) -> String

Operator-facing account of what filled the window.

The Display text is the localized user-facing remediation and deliberately carries no numbers, which left the operator’s own log line empty: the one place the cause should be recoverable said nothing.

Every share is in raw-estimate units and the conversation share is the remainder of the raw total. Calibration against provider-reported usage is shown as its own term instead of being folded into any share: folded into the conversation, a 2x correction on a schema-heavy request would report a long conversation and point the operator at the wrong fix.

Trait Implementations

impl Debug for ContextWindowExceeded

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

Formats the value using the given formatter.

impl Display for ContextWindowExceeded

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

Formats the value using the given formatter.

impl Error for ContextWindowExceeded

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.