export interface AuthResult {
    type: "api_key" | "env" | "claude_code" | "github_token" | "github_env" | "github_cli";
    provider: "anthropic" | "copilot";
    apiKey?: string;
    githubToken?: string;
}
/**
 * Resolves authentication for Anthropic using the 3-step chain:
 * 1. --anthropic-api-key flag
 * 2. ANTHROPIC_API_KEY environment variable
 * 3. Claude Code session (SDK handles this when no key is provided)
 */
export declare function resolveAuth(options: {
    apiKeyFlag?: string;
}): AuthResult;
/**
 * Resolves authentication for Copilot using the 3-step chain:
 * 1. --github-token flag
 * 2. COPILOT_GITHUB_TOKEN / GH_TOKEN / GITHUB_TOKEN environment variables
 * 3. GitHub CLI stored credentials (Copilot SDK handles this)
 */
export declare function resolveCopilotAuth(options: {
    githubTokenFlag?: string;
}): AuthResult;
/**
 * Resolves authentication for the given provider.
 */
export declare function resolveAuthForProvider(provider: "anthropic" | "copilot", options: {
    apiKeyFlag?: string;
    githubTokenFlag?: string;
}): AuthResult;
/**
 * Returns the environment variables to pass to the Agent SDK.
 * Sets the appropriate key based on the provider.
 */
export declare function getAgentEnv(auth: AuthResult): Record<string, string>;
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