/** The indexable fields a stored agent contributes to `searchPrefixes`. */
export interface AgentSearchIndexFields {
    displayName?: string | null;
    description?: string | null;
}
/** The agent shape a directory filter reads. */
export interface AgentSearchProfile {
    displayName?: string | null;
    agentConfig?: {
        description?: string | null;
    } | null;
}
/** Tolerant: non-string input normalises to ''. */
export declare function normalizeAgentDirectoryQuery(value: unknown): string;
export declare function getAgentDirectoryQueryTokens(query: string): string[];
export declare function buildAgentSearchPrefixes(input: AgentSearchIndexFields): string[];
export declare function matchesAgentSearchQuery(profile: AgentSearchProfile, query: string): boolean;