import type { CryptoApisHttpClient, RequestMetadata } from "@cryptoapis-io/mcp-shared";
/** URL path segment for each event type, per the spec's 8 dedicated create-subscription endpoints. */
export declare const EVENT_TYPE_PATH_SEGMENT: Record<string, string>;
export type CreateSubscriptionInput = {
    eventType: string;
    blockchain: string;
    network: string;
    callbackUrl: string;
    callbackSecretKey?: string;
    address?: string;
    allowDuplicates?: boolean;
    receiveCallbackOn?: number;
    confirmationsCount?: number;
} & RequestMetadata;
export declare function createSubscription(client: CryptoApisHttpClient, input: CreateSubscriptionInput): Promise<import("@cryptoapis-io/mcp-shared").RequestResult<unknown>>;
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