/**
 * LiveExchange — ExchangeClient backed by a real pricing source (CoinGecko
 * by default) but with *simulated* fills. This is the default adapter the
 * agent uses out of the box: it sees real market prices when valuing
 * positions (so P&L tracks reality) but trades are paper — no real assets
 * are moved, no real USDC is spent on exchange fees.
 *
 * A future commit will add a `RealExchange` that actually routes orders
 * through Coinbase/Kraken; it plugs into the same ExchangeClient contract
 * here. Keep this seam clean: the agent loop, risk engine, and portfolio
 * math never need to know whether they're in paper or live mode.
 *
 * Pricing is injected (not imported directly from `./data.js`) so tests
 * can validate behavior without hitting CoinGecko.
 */
import type { ExchangeClient } from './mock-exchange.js';
import type { Fill, Side } from './portfolio.js';
/** Subset of src/trading/data.ts's PriceData that we actually consume. */
export interface PricingClientResponse {
    price: number;
    change24h: number;
    volume24h: number;
    marketCap: number;
}
export interface PricingClient {
    /** Returns live price data on success, a string error on failure — matches data.ts. */
    getPrice(ticker: string): Promise<PricingClientResponse | string>;
}
export interface LiveExchangeOptions {
    pricing: PricingClient;
    feeBps: number;
}
export declare class LiveExchange implements ExchangeClient {
    private opts;
    constructor(opts: LiveExchangeOptions);
    getPrice(symbol: string): Promise<number | null>;
    placeOrder(order: {
        symbol: string;
        side: Side;
        qty: number;
        priceUsd: number;
    }): Promise<Fill>;
}