/**
 * Provider registry entry point: the process-wide registry (built-ins registered) and the ids derived from it.
 * @module web-search-pro/providers
 */
import type { ProviderRegistry } from './registry.ts';
export { ProviderRegistry, routeIdOf, costTierOf, COST_TIERS } from './registry.ts';
export type { ProviderAdapter, ProviderDescriptor, Readiness, ProbeEnv, Requirement, CostDescriptor, Operation, CredentialState, InstallationState, Health, CostTier } from './registry.ts';
export { createBuiltinRegistry, builtinAdapters } from './builtin.ts';
/**
 * The registry every SearchRouter uses unless given another. External adapters (a later milestone) register here;
 * nothing is discovered or loaded dynamically.
 */
export declare const defaultProviderRegistry: ProviderRegistry;
/** Route ids of the BUILT-IN search providers (a snapshot of the default registry at load; tool validation reads the live registry). */
export declare const SEARCH_ENGINE_IDS: readonly string[];
/** Route ids of the BUILT-IN platforms (a snapshot like {@link SEARCH_ENGINE_IDS}; `customPlatforms` keys are added to the live registry). */
export declare const PLATFORM_IDS: readonly string[];