import type { AgentConfig, AgentResult, Message, ToolContext } from "../shared/types.js";
/**
 * Run the agent loop.
 *
 * @param config - Agent configuration with provider, tools, and callbacks
 * @param messages - Initial message history
 * @param toolContext - Context passed to tool executions
 * @param signal - Optional AbortSignal for cancellation
 *
 * @example
 * ```ts
 * const result = await agentLoop({
 *   provider: createOpenAIProvider({ apiKey: process.env.OPENAI_API_KEY }),
 *   tools: [searchProducts, addToCart],
 *   onThinking: (t) => console.log("Thinking:", t),
 * }, messages, context);
 * ```
 */
export declare function agentLoop(config: AgentConfig, messages: Message[], toolContext: ToolContext, signal?: AbortSignal): Promise<AgentResult>;
/**
 * Wrap DOM content in untrusted delimiters for prompt injection defense.
 */
export declare function wrapUntrustedDom(domContent: string): string;
/**
 * Create initial messages for an agent conversation.
 */
export declare function createAgentMessages(userMessage: string, domSnapshot?: string, systemPrompt?: string): Message[];
export { AgentBudgetError, AgentIterationError, } from "../shared/error-types.js";
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