import type { AIProvider, CredentialValueSource, ProviderRequestOptions } from "@arnilo/prism";
export interface AnthropicMessagesProviderOptions {
    readonly id?: string;
    /** Defaults to `https://api.anthropic.com/v1`. */
    readonly baseUrl?: string;
    readonly apiKey?: CredentialValueSource;
    readonly fetch?: typeof fetch;
    readonly userAgent?: string;
}
/**
 * Provider-owned Anthropic Messages headers. Applied after caller headers so
 * callers cannot replace `content-type`, `x-api-key`, or `anthropic-version`.
 */
export declare function anthropicOwnedHeaders(token: string | undefined, options: ProviderRequestOptions | undefined, userAgent?: string): Record<string, string>;
export declare function createAnthropicMessagesProvider(options?: AnthropicMessagesProviderOptions): AIProvider;