import { Prompt } from '@effect/ai';
export type PromptMessage = Prompt.MessageEncoded;
type LegacyToolCall = {
    toolCallId?: string;
    toolName?: string;
    args?: Record<string, unknown>;
};
type LegacyMessage = {
    role?: string;
    content?: unknown;
    toolCalls?: LegacyToolCall[];
    toolCallId?: string;
    toolName?: string;
    options?: Record<string, unknown>;
};
export declare const normalizeMessage: (message: PromptMessage | LegacyMessage) => PromptMessage;
export declare const normalizeMessages: (messages: ReadonlyArray<PromptMessage | LegacyMessage>) => PromptMessage[];
/**
 * Filter conversation history to only include tool calls available to the current agent.
 *
 * This prevents agents from seeing tool calls from other agents in the conversation history,
 * which can confuse the model into thinking it has access to tools it doesn't.
 *
 * For example, if brain-agent (only has handoff_to_agent) loads history containing
 * update_task calls from task-agent, Claude might try to call update_task directly,
 * causing a ParseError.
 *
 * @param messages - Conversation history to filter
 * @param availableToolNames - Set of tool names available to current agent
 * @returns Filtered messages with only relevant tool calls
 */
export declare const filterHistoryForAgent: (messages: PromptMessage[], availableToolNames: Set<string>) => PromptMessage[];
export {};
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