Web search without an API key using DuckDuckGo Lite via web_fetch. Use as a fallback when web_search fails with missing_brave_api_key error, or whenever you need to search the web and no search API is configured. Provides titles, URLs, and snippets for research queries. Zero dependencies — works with just the built-in web_fetch tool.

通过 web_fetch 使用 DuckDuckGo Lite 进行无需 API 密钥的网页搜索。当 web_search 因缺少 Brave API 密钥而失败时，或在需要搜索网络但未配置任何搜索 API 时，可作为后备方案使用。可为研究查询提供标题、网址和摘要信息，无需任何依赖，仅需内置的 web_fetch 工具即可运行