import type { AgentModelRequirements } from '../../book-2.0/agent-source/AgentModelRequirements';
import { BaseCommitmentDefinition } from '../_base/BaseCommitmentDefinition';
/**
 * META commitment definition
 *
 * The META commitment handles all meta-information about the agent such as:
 * - META AVATAR: Sets the agent's built-in default avatar visual
 * - META IMAGE: Sets the agent's avatar/profile image URL
 * - META LINK: Provides profile/source links for the person the agent models
 * - META DOMAIN: Sets the canonical custom domain/host of the agent
 * - META TITLE: Sets the agent's display title
 * - META DESCRIPTION: Sets the agent's description
 * - META INPUT PLACEHOLDER: Sets chat input placeholder text
 * - META [ANYTHING]: Any other meta information in uppercase format
 *
 * These commitments are special because they don't affect the system message,
 * but are handled separately in the parsing logic for profile display.
 *
 * Example usage in agent source:
 *
 * ```book
 * META AVATAR pixel-art
 * META IMAGE https://example.com/avatar.jpg
 * META LINK https://twitter.com/username
 * META DOMAIN my-agent.com
 * META TITLE Professional Assistant
 * META DESCRIPTION An AI assistant specialized in business tasks
 * META INPUT PLACEHOLDER Write a message...
 * META AUTHOR John Doe
 * META VERSION 1.0
 * ```
 *
 * @private [🪔] Maybe export the commitments through some package
 */
export declare class MetaCommitmentDefinition extends BaseCommitmentDefinition<`META${string}`> {
    constructor();
    /**
     * Short one-line description of META commitments.
     */
    get description(): string;
    /**
     * Icon for this commitment.
     */
    get icon(): string;
    /**
     * Markdown documentation for META commitment.
     */
    get documentation(): string;
    applyToAgentModelRequirements(requirements: AgentModelRequirements, content: string): AgentModelRequirements;
    /**
     * Extracts meta information from the content based on the meta type
     * This is used by the parsing logic
     */
    extractMetaValue(metaType: string, content: string): string | null;
    /**
     * Validates if the provided content is a valid URL (for IMAGE and LINK types)
     */
    isValidUrl(content: string): boolean;
    /**
     * Checks if this is a known meta type
     */
    isKnownMetaType(metaType: string): boolean;
}