/**
 * ChatAgent -- agentic tool-use loop for the diagram chatbot.
 *
 * Supports three provider formats:
 *   - Anthropic Claude   (tool_use / tool_result via /v1/messages)
 *   - OpenAI-compatible  (function calling via /chat/completions)
 *   - Google Gemini      (function calling via generateContent)
 *
 * Provider resolution (same priority as generate.ts):
 *   1. GEMINI_API_KEY                -> Gemini
 *   2. ANTHROPIC_API_KEY             -> Anthropic Claude
 *   3. OPENAI_COMPAT_BASE_URL        -> any OpenAI-compatible endpoint
 *   4. openloreConfig.generation      -> reads provider + openaiCompatBaseUrl from config
 *   5. OPENAI_API_KEY                -> OpenAI directly
 *
 * Model: OPENAI_COMPAT_MODEL env var -> openloreConfig.generation.model -> provider default.
 *
 * Max iterations: 8 (prevents runaway loops).
 */
type ProviderKind = 'gemini' | 'anthropic' | 'openai-compat';
interface ProviderConfig {
    kind: ProviderKind;
    baseUrl: string;
    apiKey: string;
    model: string;
}
/**
 * Resolve the active LLM provider by checking environment keys in priority order:
 * Gemini API key → Anthropic API key → OpenAI-compatible base URL → config file → OpenAI key.
 * Returns a ProviderConfig with kind, baseUrl, apiKey, and model fields.
 */
export declare function resolveProviderConfig(directory: string): Promise<ProviderConfig>;
export interface ChatAgentOptions {
    directory: string;
    messages: {
        role: 'user' | 'assistant';
        content: string;
    }[];
    modelOverride?: string;
    signal?: AbortSignal;
    onToolStart?: (name: string) => void;
    onToolEnd?: (name: string) => void;
}
export interface ChatAgentResult {
    reply: string;
    filePaths: string[];
}
export declare function runChatAgent(options: ChatAgentOptions): Promise<ChatAgentResult>;
export {};
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