/**
 * Which tool Trazum is running inside.
 *
 * On the Node entry point rather than the browser-safe one, because it reads the
 * process environment. Nothing about the optimisation changes with the answer —
 * the same prompt optimises the same way everywhere, as it must, and that is a
 * standing constraint rather than a coincidence.
 *
 * What the answer earns is the right to stop quoting a monthly dollar saving to
 * somebody on a flat-rate plan. Inside Cursor or a Claude Code subscription the
 * per-call saving is real arithmetic about tokens and **not money anybody gets
 * back**, and "$184/month" is wrong in the direction that matters most.
 */
export interface HostEnvironment {
    id: string;
    displayName: string;
    /**
     * How the host bills.
     *
     * `unknown` is honest rather than lazy: a VS Code terminal says nothing about
     * whether the prompts written in it go to a metered API or a subscription, and
     * guessing either way would be worse than saying so.
     */
    billing: 'per-token' | 'subscription' | 'unknown';
    /** The variable that gave it away, so the answer is checkable rather than magic. */
    evidence: string | null;
}
/** The host, or a plain terminal when nothing identifies itself. */
export declare function detectHost(env?: NodeJS.ProcessEnv): HostEnvironment;
//# sourceMappingURL=host.d.ts.map