English | 中文
@deepseek-ai/dsh-token-meter 公开一个独立的回放快照，用于表示请求压力与按位置计算的表层定价。logRevision 表示生成该计量中每个字段时所消费的持久事件数量。
来源：packages/llm/token-meter/src/types.ts
TokenMeasurement
/** Detached immutable request-pressure and surface snapshot at one consumed log revision. */
interface TokenMeasurement {
/** Number of durable events consumed; equal to the next unread event seq. */
readonly logRevision: SessionLogOffset
/** Provider or heuristic anchor used for this measurement. */
readonly baseline: TokenMeasurementBaseline
/** Signed repricing of current surface content relative to the baseline anchor. */
readonly surfaceDeltaTokens: number
/** Non-negative current request-and-response pressure. */
readonly totalTokens: number
/** Total route-priced request tokens across the current surface; equals the sum of the node prices. */
readonly surfaceTokens: number
/** Current surface nodes in positional head-to-tail order. */
readonly nodes: readonly TokenSurfaceNode[]
}
每次计量都会通过 ctx.llm 把生效信封的路由 provider/model 解析为该路由声明的请求图片定价，因此图片出现处按请求实际发送的视觉 token 加模型可见文本计价；未声明定价的路由与组合保持固定启发式规则。baseline.kind === 'usage' 表示最近一次成功的提供方调用具有相同的规范请求 envelope，且该调用的总量不低于其完整路由定价锚点。estimated 表示不存在可复用的保守 usage 锚点，因此服务自行对完整信封和表层定价。后续成功请求会替换早先的锚点；有符号的 surfaceDeltaTokens 会保留相对于匹配锚点的增长与缩减，且两侧按同一路由重新定价。totalTokens 仍表示请求与响应压力，surfaceTokens 则是表层的路由定价总量，等于所有节点价格之和。
TokenSurfaceNode
/** One token-priced node in the current ordered session surface. */
interface TokenSurfaceNode {
/** Durable sequence number of the surface event. */
readonly seq: SessionSeq
/**
* Request-pressure tokens for the exact message projected by this node under
* the measured route: image occurrences carry the route's declared visual
* price when the routed adapter declares one, and the fixed heuristic
* otherwise. Trigger, retention, and range selection all read this price.
*/
readonly tokens: number
/**
* Fixed-heuristic tokens for the same message, independent of any route.
* The shadow-price protocol prices replacements with this value so the O(1)
* projection fold stays in agreement with its own appends.
*/
readonly heuristicTokens: number
}
表层顺序具有权威性；替换节点的持久 seq 可能高于位置排在其后的节点。该快照不可变，不会随底层回放折叠推进而增长。
Cordis API
Generated from source by scripts/gen-cordis-catalog.ts (verified fresh by pnpm run verify-cordis-catalog in doc-sync; regenerate with pnpm run gen-cordis-catalog) — the language sides differ only in locale-specific paired document paths. Signature blocks use a ts cordis-catalog fence and keep the original source JSDoc; dispatch modes are defined in the primer, and the framework-inherited ctx API lives in cordis-api/inherited.md.
ctx.tokenMeter — TokenMeter
Replay owner for one service-wide estimator and isolated per-session folds.
/**
* Measure current request pressure and surface through the durable tail.
*
* The effective envelope's routed provider/model selects the request-image
* pricing every node is priced under: a route whose adapter declares image
* pricing charges each retained image its visual tokens plus its
* model-visible text, while other routes keep the fixed heuristic. 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 route-priced anchor; otherwise the complete envelope and
* surface are repriced. The anchor includes all surface nodes immediately
* before the assistant message, including inputs admitted after step/start.
*
* `requestHeader` replaces the latest logged envelope for pressure and node
* pricing; the node set always describes the current session surface. Every
* call clones those positional nodes, so measurement is O(surface).
*
* @param session - session to replay through its current durable tail.
* @param requestHeader - optional effective request envelope replacing the latest logged header.
* @returns a detached deeply immutable pressure and surface measurement.
*/
measure(session: Session, requestHeader?: EpochHeader): TokenMeasurement
/**
* Heuristically price one model-visible message (instance face of the pure
* `estimateMessage` export from `estimate.ts`).
* @param message - message to price without mutation.
* @returns content and role-framing tokens under the fixed service heuristic.
*/
estimateMessage(message: Message): number
Types: EpochHeader · Message · Session