dsh-free-search

Many DeepSeek Harness users run into a frustrating situation: without an official DeepSeek API key, or when using a gateway like opencode-go that doesn't support the web_search tool, the built-in search fails immediately and the agent simply says it cannot access the internet. dsh-free-search exists to solve exactly that problem. It removes the dependency on DeepSeek's official key entirely by offering multiple search engines—DuckDuckGo, Bing, AnySearch, SearXNG, Exa, Tavily, Keenable, and more—several of which are completely free or include anonymous quota. After installation, it defaults to the stable Bing engine and works out of the box.

The plugin's core strength is a unified engine fallback mechanism: if the preferred engine fails due to rate limiting, missing keys, 401 errors, or network issues, it automatically tries the next available engine and notes the one that actually served the results. Search never fails outright because of a single engine problem. On top of that, it provides an advanced_search tool with flexible time filtering (expressions like “last week”, “3d”, or “after 2026-07-01”), web_fetch for reading full webpage contents, and platform_search for querying GitHub, V2EX, Bilibili, Reddit, Hacker News, Stack Overflow, Wikipedia, and npm.

A web settings page and the /free-search-engine popup command let you switch engines, configure API keys for paid engines, test connectivity, and toggle between Chinese and English. A 5-minute result cache helps prevent rate limiting on free engines and saves paid quota.

Whether you're a user without an official DeepSeek key, a developer on a third-party gateway, or simply someone who wants more stable, flexible, and cost-effective web access for your agent, this plugin is a great fit.