/**
 * mintAnonReadToken — client-side helper to mint an anon-read JWT.
 *
 * Calls POST /api/sdk/auth/anon-read-mint on the OxPulse backend.
 * Returns a short-lived (300 s) read-only token that can be passed
 * to SDKChatClient as `jwt` with `cryptoMode: 'plaintext'`.
 *
 * Throws AnonReadMintError on any non-2xx response.
 */
export interface AnonReadMintResult {
    /** Raw JWT — pass directly to SDKChatClient opts.jwt (no "Bearer " prefix). */
    token: string;
    /** Opaque anon user ID minted server-side (UUID). */
    userId: string;
    /** Unix timestamp (seconds) at which the token expires. */
    expiresAt: number;
}
export type AnonReadMintErrorCode = 'not_anon_readable' | 'disabled' | 'rate_limited' | 'mint_failed';
export declare class AnonReadMintError extends Error {
    readonly code: AnonReadMintErrorCode;
    readonly status: number;
    constructor(code: AnonReadMintErrorCode, message: string, status: number);
}
export declare function mintAnonReadToken(opts: {
    baseUrl: string;
    appId: string;
    roomId: string;
    /** Injectable fetch implementation — defaults to globalThis.fetch. For tests. */
    fetchImpl?: typeof fetch;
}): Promise<AnonReadMintResult>;
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