2.0 KiB
ctx.tokenMeter
TokenMeterService — provided by @deepseek-ai/dsh-token-meter.
Replay owner for one service-wide estimator and isolated per-session folds.
ctx.tokenMeter.contextWindow
readonly contextWindow: number
Provider context-window capacity used by pressure consumers.
ctx.tokenMeter.measure(session, requestHeader?)
measure(session: Session, requestHeader?: EpochHeader): TokenMeasurement
Measure current request pressure and surface through the durable tail.
Provider usage is reused only when the latest successful call's canonical request envelope matches requestHeader and its total is no lower than that call's full heuristic anchor; otherwise the complete envelope and surface are heuristically repriced.
requestHeader affects request pressure only; surface fields always describe the current session surface. Every call clones those positional nodes, so measurement is O(surface).
session— session to replay through its current durable tail.requestHeader— optional effective request envelope replacing the latest logged header.
Returns a detached deeply immutable pressure and surface measurement.
ctx.tokenMeter.estimateMessage(message)
estimateMessage(message: Message): number
Heuristically price one model-visible message.
message— message to price without mutation.
Returns content and role-framing tokens under the fixed service heuristic.