dsh-web-search-pool

DeepSeek Harness 的 多供应商搜索负载均衡插件。将多个 Tavily 和 Exa API keys 组织成智能池，自动按限流调度并故障切换。

✨ Features

• 🔑 Multi-key Pool: 支持多个 Tavily + Exa keys，统一管理
• ⚖️ Smart Load Balancing: 基于 RPM（每分钟的请求数）加权轮询调度
• 🔄 Automatic Fallback: 429 rate limit、额度耗尽、网络错误时自动切换到下一个 key
• 📊 Usage Dashboard: Settings 页卡片实时查看已用额度、总限额、刷新按钮
• 🔒 Secure: API keys 通过 DSH credentials service 保存，不写入配置文件
• 🎯 Exa Anonymous Free Tier: 内置免费匿名层（1 req/sec），有 key 走 REST 提配额
• 🏗️ Native Bundle (rc.7): DeepSeek Harness 官方式原生 Bundle 集成

📦 Installation

# Build distribution package
npm pack

# Install to your profile
dsh plugin --profile web add ./dsh-web-search-pool-0.1.0-rc.7.tgz

Prerequisites

• ✅ DeepSeek Harness 0.1.0-rc.7 or higher
• 🔐 At least one search provider API key (Tavily / Exa)

⚙️ Configuration

After installation, configure via DSH Settings UI:

1. Open DeepSeek Harness → Settings → Plugins
2. Find "搜索 Key 池" card and expand it
3. Add your Tavily/Exa keys with:
   • Environment Variable Name (e.g., TAVILY_API_KEY_1)
   • Rate Limit (RPM): requests per minute
   • Remark: friendly name (optional)
4. Click Save - secrets are stored securely via credentials

🔐 All API keys are stored in DS H's credential system, never in plain-text configs.

🛠️ Usage

Once configured, the plugin automatically becomes your default web_search tool. No manual selection needed!

The provider will:

• Select optimal key based on current quota and load
• Switch providers (Tavily ↔ Exa) on failure
• Respect rate limits and quotas across all keys
• Return structured errors without exposing sensitive data

🧪 Testing

# Run test suite
npm run test

# Syntax check
node --check src/**/*.js scripts/*.mjs

# Pack integrity check
npm pack --dry-run

📄 Documentation

• Installation Guide - Quick setup for rc.7
• Upgrade & Rollback Guide - Migrate from v0.2.x, troubleshooting
• Development History & Specs - Design decisions and specifications
• [Architecture Overview](AI搜索Key池负载均衡 - 开发计划.md) - Technical architecture and trade-offs

🔧 Troubleshooting

Issue	Cause	Solution
No settings card	Legacy rc.6 slot registration	Update to use key: web-search-pool, restart DSH
Still using official search	Bundle patch not loaded	Reinstall tarball, verify searchProvider: search-pool
Usage refresh fails	Invalid credentials or quota exhausted	Check credentials config, wait for quota recovery

See Upgrade Guide for complete table.

🏗️ Architecture

See technical design docs:

• Bundle Contract Specification
• Key Pool & Scheduler Logic
• RC7 Migration Report

🔐 Security

This plugin follows Zero Trust for credentials:

• No hardcoded secrets or API keys
• Keys only stored via DSH credentials service
• Never logged or exposed in responses
• Public anonymous mode available (Exa free tier)

📜 License

MIT License - see LICENSE file

🤝 Contributing

Issues and PRs welcome! Please follow existing patterns:

• Core logic in src/core/ (DSH-independent)
• Provider implementation in src/dsh/ (Host half)
• Client UI in src/dsh/client.js (Web half)
• Tests parallel production coverage (TDD)

See Development Guidelines for best practices.

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