export declare const agentCredentialEnvNames: readonly ["ANTHROPIC_API_KEY", "ANTHROPIC_AUTH_TOKEN", "ANTHROPIC_BASE_URL", "ANTHROPIC_DEFAULT_HAIKU_MODEL", "ANTHROPIC_DEFAULT_OPUS_MODEL", "ANTHROPIC_DEFAULT_SONNET_MODEL", "ANTHROPIC_MODEL", "CLAUDE_CODE_DISABLE_NONSTREAMING_FALLBACK", "CLAUDE_CODE_SUBAGENT_MODEL", "GEMINI_API_KEY", "GOOGLE_API_KEY", "OPENAI_API_KEY"];
export declare function agentCredentialEnv(source?: NodeJS.ProcessEnv): Record<string, string>;