/**
 * The signature a Personal Server's owner makes over this exact message. The
 * server recovers its owner from it and derives the data encryption key from
 * it, so it is as sensitive as a key.
 */
export declare const OWNER_BINDING_MESSAGE = "vana-master-key-v1";
export declare const OWNER_BINDING_INTENT = "personal_server.owner_binding.v1";
export interface OwnerBinding {
    signature: string;
    signerAddress: string;
    /**
     * Account's proof that this owner approved this client, needed later to
     * register the server. Present for public native clients such as the CLI.
     */
    trustToken: string | null;
}
export interface OwnerBindingDeps {
    fetchImpl?: typeof fetch;
    openBrowser: (url: string) => void;
    /** Called with the confirmation URL, so a person can open it by hand. */
    onConfirmationUrl?: (url: string) => void;
    timeoutMs?: number;
}
/** What Account returns when an exchange is redeemed. */
export interface RedeemedExchange {
    status?: string;
    signature?: string;
    signerAddress?: string;
    desktopSigningTrustToken?: string;
    typedData?: unknown;
}
/**
 * Run one Account signing exchange: the person confirms in the browser, and
 * the result comes back to a one-time loopback listener, bound to this
 * process by state and PKCE. `step` names the request in error messages.
 */
export declare function runSigningExchange(input: {
    accountUrl: string;
    accessToken: string;
    intent: string;
    payload?: Record<string, unknown>;
    step: string;
}, deps: OwnerBindingDeps): Promise<RedeemedExchange>;
/**
 * Get the owner-binding signature through Account's signing exchange: Account
 * never signs it silently for the CLI, so the person confirms in the browser.
 */
export declare function runOwnerBindingExchange(input: {
    accountUrl: string;
    accessToken: string;
}, deps: OwnerBindingDeps): Promise<OwnerBinding>;
export declare function describeFailure(step: string, response: Response): Promise<string>;
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