import type { JsonObject, ToolDef } from '@fabric-harness/sdk';
import type { DatabricksModelServingQueryClient } from './embeddings.js';
export interface DatabricksFeatureLookupToolOptions {
    /** Feature Serving endpoint name (serves features from an online table / feature spec). */
    endpoint: string;
    name?: string;
    description?: string;
}
/**
 * Low-latency feature lookup from a Databricks **Feature Serving** endpoint (backed by an Online
 * Table). The model passes primary-key records; the endpoint returns the served feature values.
 * Drives serving consumption and keeps features governed by Unity Catalog under the bundle principal.
 */
export declare function databricksFeatureLookupTool(client: DatabricksModelServingQueryClient, options: DatabricksFeatureLookupToolOptions): ToolDef<{
    records: JsonObject[];
}, unknown>;
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