/**
 * Chain & platform helpers.
 * Maps API chain values (bsc/robinhood/base/solana) to user-facing display names.
 * Accepts 'bnb' as alias for 'bsc' and 'rh' for 'robinhood' where applicable.
 */
/**
 * Valid API chain values. Mirrors backend api/schemas/agent.py VALID_CHAINS.
 * Only used for membership checks — user-facing order is BSC, Robinhood, Base, Solana.
 */
export declare const VALID_CHAINS: readonly ["base", "bsc", "robinhood", "solana"];
/** Platform → supported chains. Mirrors backend conf/platform.py PLATFORM_CHAINS. */
export declare const PLATFORM_CHAINS: Record<string, readonly string[]>;
/** Default platform per chain. Mirrors backend DEFAULT_PLATFORM_BY_CHAIN. */
export declare const DEFAULT_PLATFORM: Record<string, string>;
/**
 * Chain name → numeric chain_id.
 *
 * Needed because fee economics are NOT chain-invariant: the same platform can run a
 * different fee model on each chain it supports. `flap` on BSC splits fees 10/90 across
 * 8 recipients at a 3% tax; `flap` on Robinhood launches non-vault, so Kibi takes 0%,
 * the creator keeps 100%, and there is no split slot at all. GET /token/platform-config
 * defaults to the BSC config when `chain_id` is omitted, so every config lookup MUST
 * pass the chain or it will silently describe the wrong chain's economics.
 */
export declare const CHAIN_IDS: Record<string, number>;
/** Numeric chain_id for a chain name (already normalised), or undefined if unknown. */
export declare function chainIdFor(chain: string | undefined | null): number | undefined;
/** Get platforms available for a chain, default first. */
export declare function platformsForChain(chain: string): string[];
/** Check if a platform is valid for a given chain. */
export declare function isValidPlatform(platform: string, chain: string): boolean;
/** Map API chain name to display name */
export declare function chainDisplay(chain: string | undefined | null): string;
/** Normalise user-input chain to API chain name. Accepts 'bnb' → 'bsc', 'rh' → 'robinhood'. */
export declare function normaliseChain(chain: string): string;