import type Anthropic from "@anthropic-ai/sdk";
import type { GenerationSettings, SystemBlock } from "@use-crux/core";
import type { CallArgs } from "@use-crux/core/adapter";
import type { NativeChatRequestArgs } from "@use-crux/core/adapter";
import type { AnthropicExtra, AnthropicRequest } from "./types";
/** Default `max_tokens` when a call site does not provide one. */
export declare const DEFAULT_MAX_TOKENS = 4096;
/**
 * Cast a request body into Anthropic's non-streaming message params.
 *
 * The SDK types are intentionally closed over many provider fields, while the
 * adapter assembles them from canonical settings plus provider-native extras.
 * This helper keeps that boundary cast in one place.
 */
export declare function asAnthropicNonStreamingParams(params: Record<string, unknown>): Anthropic.MessageCreateParamsNonStreaming;
/**
 * Cast a request body into Anthropic's streaming message params.
 *
 * Keep this paired with {@link asAnthropicNonStreamingParams} so request
 * assembly stays consistent between `call()` and `stream()`.
 */
export declare function asAnthropicStreamingParams(params: Record<string, unknown>): Anthropic.MessageCreateParamsStreaming;
/** Build the Anthropic request body from canonical Crux call arguments. */
export declare function anthropicRequest(args: NativeChatRequestArgs<AnthropicExtra, Anthropic.MessageParam>): AnthropicRequest;
/**
 * Build the Anthropic `system` request field from Crux system blocks.
 *
 * Anthropic supports explicit cache-control breakpoints. Crux marks the
 * stable-prefix boundary during prompt resolution, so the adapter emits one
 * native breakpoint on that block instead of marking every cached block.
 */
export declare function anthropicSystemParam(system: string | undefined, systemBlocks: readonly SystemBlock[] | undefined): string | Anthropic.TextBlockParam[] | undefined;
/**
 * Build Anthropic tool declaration params from either provider-native extras or
 * canonical Crux tool definitions.
 */
export declare function anthropicToolParams(tools: CallArgs["tools"], extra: {
    readonly tools?: readonly Anthropic.ToolUnion[];
    readonly tool_choice?: Anthropic.ToolChoice;
} | undefined): Record<string, unknown>;
/** Read Anthropic's required `max_tokens` value from mapped settings. */
export declare function anthropicMaxTokens(settings: Record<string, unknown>): number;
/** Map canonical generation settings to Anthropic-native request fields. */
export declare function mapAnthropicSettings(settings: GenerationSettings): Record<string, unknown>;
/**
 * The JSON Schema behavior Anthropic's structured-output format accepts.
 *
 * Anthropic rejects several JSON Schema validation keywords; core drops those
 * during lowering rather than the adapter sanitizing them. Exact per-keyword and
 * envelope conformance is finalized in the Anthropic provider slice.
 */
export declare const anthropicStructuredCapabilities: {
    id: string;
    supportsJsonSchema: true;
    requiresAllProperties: false;
    supportsOptionalProperties: true;
    supportsNullable: true;
    supportsBooleanSchemas: false;
    supportsReferences: true;
    supportsUnions: true;
    supportsRecursiveSchemas: true;
    additionalProperties: "supported";
    unsupportedKeywords: string[];
};
/**
 * Strip `description` fields from a JSON schema.
 *
 * Anthropic rejects tool parameter schemas containing nested descriptions; this
 * recursively preserves every other field.
 */
export declare function stripDescriptions(schema: Record<string, unknown>): Record<string, unknown>;