Count failures preserve bounded classifications without retaining request bytes. Inspect them with errors.As and errors.Is.

Types

Error	Meaning
`EstimatorStateError`	nil estimator or nil context
`ModelIdentityError`	invalid model key or identity
`UnsupportedAPIFormatError`	no bundled estimator encoder
`RequestEncodingError`	selected codec rejected the request
`ContextCountError`	callback missing, canceled, model/quality mismatch, or wrapped cause
`CapabilityValidationError`	malformed capability metadata
`CounterCompatibilityError`	counter weakens inference trust posture

ContextCountError.Unwrap exposes the safe cause. The errors do not include raw request bodies or provider response content.

Inspection

var unsupported *contextcount.UnsupportedAPIFormatError
var encoding *contextcount.RequestEncodingError
switch {
case errors.As(err, &unsupported):
	// choose an exact provider counter or reject admission
case errors.As(err, &encoding):
	// fix the request or use a dialect that represents it
}

Source and proof

Run go test ./contextcount.