/**
 * Call GraphQL login mutation and return bearer token
 */
export declare function graphqlLogin(email: string, password: string): Promise<string>;
/**
 * Fetch LiteLLM virtual key for the authenticated user
 */
export declare function fetchLitellmKey(bearerToken: string): Promise<string>;
/**
 * Fetch available models from LiteLLM /v1/models endpoint
 */
export declare function fetchAvailableModels(litellmKey: string): Promise<string[]>;
/**
 * Validate that a LiteLLM key works by calling /v1/models.
 * Returns true if the key is accepted (HTTP 2xx), false otherwise.
 */
export declare function validateLitellmKey(litellmKey: string): Promise<boolean>;
/**
 * Full authentication flow: login → fetch key → validate key
 * Used with separate email/password inputs from Plugin API prompts
 */
export declare function authenticateWithCredentials(email: string, password: string): Promise<{
    type: "success";
    key: string;
    bearerToken: string;
} | {
    type: "failed";
}>;
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