import type { JsonObject, ProviderRequest } from "@arnilo/prism";
/**
 * Official Messages `thinking` object. Request `options.compat.thinking` wins over model default.
 * Hosts pass `{ type: "enabled", budget_tokens }` (Haiku 4.5 / older) or `{ type: "adaptive" }`
 * (Opus 4.8 / Sonnet 5 / Fable 5). Boolean true → `{ type: "enabled" }` (caller must add budget).
 */
export declare function anthropicThinking(request: ProviderRequest): JsonObject | undefined;
/**
 * Official Messages `effort` (adaptive thinking depth). Request wins over model default.
 * Accepts `compat.effort` or portable `compat.reasoning_effort`.
 */
export declare function anthropicEffort(request: ProviderRequest): string | undefined;
/**
 * Whether to replay historical thinking blocks (with signatures) on the next request.
 * Request `compat.preserveThinking` wins; defaults true when the model declares reasoning.
 */
export declare function anthropicPreserveThinking(request: ProviderRequest): boolean;
/**
 * Strip provider-owned compat keys before opaque body spread.
 */
export declare function stripAnthropicOwnedCompat(compat: JsonObject | undefined): JsonObject;