import type { CompletionRequest } from "../types.js";
import { type LlmProvider } from "./provider.js";
/** Output cap that always clears the requested thinking budget. */
export declare function anthropicMaxTokens(requested: number | undefined, thinking: Record<string, unknown> | undefined): number;
/**
 * Mark the end of the stable system prefix as a cache breakpoint. Anthropic's
 * cache render order is tools → system → messages, so this single breakpoint
 * caches both unchanged native tool schemas and the constitution. Mutable
 * request/workspace/plan state is carried only in later messages.
 */
export declare function anthropicSystemBlocks(system: string | undefined, requestContexts?: readonly string[]): string | Array<Record<string, unknown>> | undefined;
export declare function buildAnthropicBody(request: CompletionRequest, stream: boolean): string;
export declare const anthropicProvider: LlmProvider;