tianmingwan
dsh-balanced-search
Balanced web search plugin/MCP server for DeepSeek Harness: Keenable / Exa / Tavily round-robin with failover. / 均衡搜索插件:Keenable / Exa / Tavily 轮流调用,自动故障切换。
- Stars
- 0
- Language
- Python
- Created
- Aug 16, 2026
- Updated
- Aug 16, 2026
Introduction
dsh-balanced-search
English: A balanced web search plugin / MCP server that round-robins across Keenable (Keen Search) / Exa / Tavily and automatically fails over to the next provider. Returns normalized titles, links, and content summaries.
中文: 均衡搜索插件 / MCP 服务器:把 Keenable(Keen Search)/ Exa / Tavily 三个搜索 API 轮流调用(round-robin),某个服务失败时自动切换下一个,统一返回标题 / 链接 / 摘要。
This repository provides two forms / 本仓库同时提供两种形态:
- DeepSeek Harness native plugin (recommended) / dsh 原生插件(推荐) — registers
balanced_search/balanced_fetchdirectly as dsh tools, no Python required. / 直接注册balanced_search/balanced_fetch两个 dsh 工具,无需 Python。 - Generic MCP server / 通用 MCP 服务器 — exposes
search/fetchover stdio viaserver.pyfor any MCP client. / 通过server.py以 stdio 方式暴露search/fetch,可供任意 MCP 客户端使用。
Features / 功能
- Search the web and return titles, links, and content summaries. / 搜索网页,返回标题、链接和内容摘要。
- Fetch a URL and return clean markdown text. / 抓取指定 URL 的网页正文,返回 clean markdown。
- Round-robin across providers with automatic failover. / 三个服务轮流调用,单个服务失败时自动切换下一个。
- Configure API keys via environment variables; providers without a key are skipped. / 通过环境变量配置 API key;未配置的服务不会启用。
Environment Variables / 环境变量
Configure at least one search provider API key / 至少配置一个搜索服务的 API key:
KEENABLE_API_KEY=...
EXA_API_KEY=...
TAVILY_API_KEY=...
The dsh native plugin reads process environment variables directly. The Python MCP server also loads a .env file in the same directory. / dsh 原生插件直接读取进程环境变量;Python MCP 服务器还会自动读取同目录下的 .env 文件。
Directory Structure / 目录结构
| File / 文件 | Description / 说明 |
|---|---|
index.js | dsh native plugin entry; registers balanced_search / balanced_fetch / dsh 原生插件入口 |
cordis.patch.yml | dsh bundle config layer / dsh bundle 配置层 |
package.json | dsh bundle manifest / dsh bundle 声明 |
server.py | Generic MCP server (stdio); exposes search / fetch / 通用 MCP server |
providers.py | Python providers + round-robin / failover / Python 版 API 客户端与轮换 |
requirements.txt | Python MCP server dependencies / Python MCP 服务器依赖 |
.env.example | API key template (copy to .env) / API key 配置模板 |
.gitignore | Excludes .env, virtualenvs, caches / 排除本地敏感与缓存文件 |
Install as a dsh Plugin / 安装为 dsh 插件
Requirements / 要求:DeepSeek Harness (dsh) installed, Node.js ≥ 20.
dsh plugin --profile web add github:tianmingwan/dsh-balanced-search
After restarting dsh --profile web, these tools will be available / 重启后会话中会出现两个工具:
balanced_searchbalanced_fetch
No Python dependencies required / 无需安装 Python 依赖。
Use as a Generic MCP Server / 作为通用 MCP 服务器使用
Install / 安装
python -m venv .venv
# Windows
.venv\Scripts\python.exe -m pip install -r requirements.txt
# Linux / macOS
.venv/bin/python -m pip install -r requirements.txt
Run / 运行
# stdio mode for MCP clients / stdio 模式,供 MCP 客户端连接
python server.py
# or use the virtualenv Python / 或使用虚拟环境中的 Python
.venv\Scripts\python.exe server.py # Windows
.venv/bin/python server.py # Linux / macOS
MCP Client Example / MCP 客户端接入示例
{
"mcpServers": {
"balanced-search": {
"command": "/absolute/path/to/.venv/bin/python",
"args": ["/absolute/path/to/server.py"],
"env": {
"KEENABLE_API_KEY": "...",
"EXA_API_KEY": "...",
"TAVILY_API_KEY": "..."
}
}
}
}
Tool Usage / 工具用法
dsh Native Tools / dsh 原生工具
balanced_search— parameters / 参数:query/max_results/time_rangebalanced_fetch— parameters / 参数:url/max_chars/live
MCP Tools / MCP 工具
search— parameters / 参数:query/max_results/time_rangefetch— parameters / 参数:url/max_chars/live
Parameter Reference / 参数说明
query(required / 必填): Search keyword or natural language question / 搜索关键词或自然语言问题max_results: 1–20, default 8 / 1–20,默认 8time_range:day/week/month/year(native for Tavily; Exa maps tostartPublishedDate; Keenable maps topublished_after) / (Tavily 原生;Exa 映射为startPublishedDate;Keenable 映射为published_after)max_chars: Maximum characters to return, default 30000, max 50000 / 抓取内容最大字符数,默认 30000,上限 50000live: Fetch live from the source (bypass index/cache), defaultfalse/ 是否实时从源站抓取(绕过索引/缓存),默认false
Search response / 搜索返回 JSON:
{
"provider": "keenable|exa|tavily",
"count": 1,
"results": [
{"title": "...", "url": "...", "content": "...", "published_at": "...", "score": 0.5}
]
}
Fetch response / 抓取返回 JSON:
{
"provider": "keenable|exa|tavily",
"result": {"url": "...", "title": "...", "content": "..."}
}
Configuration Notes / 配置说明
- Change keys / 换 key:dsh plugin uses environment variables; MCP server uses
.envor clientenvinjection. - Failover strategy / 轮换策略:
Balancer(currently round-robin + failover; can be changed to weighted or health-aware). - Add a provider / 新增服务:add a
SearchProvidersubclass inproviders.pyand register it inbuild_balancer(); or add a Provider class inindex.js.
License
MIT