import type { AgentModelRequirements } from '../../book-2.0/agent-source/AgentModelRequirements';
import { BaseCommitmentDefinition } from '../_base/BaseCommitmentDefinition';
/**
 * META THINKING MESSAGE commitment definition.
 *
 * The `META THINKING MESSAGE` commitment adds one custom thinking placeholder
 * variant used by chat UIs while an agent is composing a reply.
 *
 * @private Metadata-only commitment used by Agents Server chat UIs.
 */
export declare class MetaThinkingMessageCommitmentDefinition extends BaseCommitmentDefinition<'META THINKING MESSAGE'> {
    constructor();
    /**
     * Short one-line description of META THINKING MESSAGE.
     */
    get description(): string;
    /**
     * Icon for this commitment.
     */
    get icon(): string;
    /**
     * Markdown documentation for META THINKING MESSAGE commitment.
     */
    get documentation(): string;
    applyToAgentModelRequirements(requirements: AgentModelRequirements, content: string): AgentModelRequirements;
}