/**
 * LLM Service Interfaces.
 *
 * Domain contracts for interacting with Large Language Model providers.
 * Supports multiple backends: Anthropic (Claude), OpenAI, and Ollama (local).
 *
 * Part of Phase 6A: LLM Provider Abstraction Layer.
 */
/**
 * Supported LLM providers.
 */
export type LlmProvider = 'anthropic' | 'openai' | 'ollama';
/**
 * All valid LLM provider values.
 */
export declare const LLM_PROVIDER_VALUES: readonly LlmProvider[];
/**
 * Type guard for LlmProvider.
 */
export declare function isValidLlmProvider(value: string): value is LlmProvider;
/**
 * LLM configuration.
 */
export interface ILlmConfig {
    readonly provider: LlmProvider;
    readonly model: string;
    readonly endpoint?: string;
    readonly apiKey?: string;
    readonly enabled: boolean;
    readonly maxTokens: number;
    readonly temperature: number;
}
/**
 * Default LLM configuration.
 */
export declare function getDefaultLlmConfig(): ILlmConfig;
/**
 * Token usage from an LLM call.
 */
export interface ILlmUsage {
    readonly inputTokens: number;
    readonly outputTokens: number;
    readonly totalTokens: number;
}
/**
 * Response from an LLM call.
 */
export interface ILlmResponse {
    readonly text: string;
    readonly usage: ILlmUsage;
    readonly model: string;
    readonly provider: LlmProvider;
}
/**
 * Options for an LLM completion request.
 */
export interface ILlmRequestOptions {
    readonly maxTokens?: number;
    readonly temperature?: number;
    readonly systemPrompt?: string;
}
/**
 * LLM completion service.
 * Sends prompts to an LLM provider and returns structured responses.
 */
export interface ILlmService {
    /**
     * Send a completion request to the configured LLM provider.
     *
     * @param prompt - The user prompt text
     * @param options - Optional request overrides (tokens, temperature, system prompt)
     * @throws LlmDisabledError if LLM is disabled
     * @throws LlmConfigError if configuration is invalid (e.g. missing API key)
     * @throws LlmProviderError if the provider returns an error
     */
    complete(prompt: string, options?: ILlmRequestOptions): Promise<ILlmResponse>;
    /**
     * Check whether the LLM provider is available and configured.
     * Returns false if disabled or provider unreachable.
     */
    isAvailable(): Promise<boolean>;
    /**
     * Get the current resolved LLM configuration.
     */
    getConfig(): Promise<ILlmConfig>;
}
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