🔍 web-search-plus-mcp

Multi-provider web search and Parallel-aware URL extraction for MCP clients.

web-search-plus-mcp is the standalone MCP packaging of Web Search Plus. It gives Claude Desktop, Cursor, NanoBot, Hermes native MCP, and other MCP-compatible hosts the same provider family used by the Hermes/OpenClaw Web Search Plus tools.

Version note: web-search-plus-mcp uses its own MCP package version (0.11.0) while tracking the Web Search Plus v2.4 engine family. The plugin package is versioned separately as hermes-web-search-plus v2.4.x.

✨ Features

• 13 search providers + auto-routing — provider metadata, schemas, defaults, and guarded/auto behavior are generated from the shared Web Search Plus provider registry

• 6 extract providers — Tavily, Exa, Linkup, Parallel, Firecrawl, You.com

• Routing v2.3 auto-routing — registry-backed routing for multilingual/current, docs/API, arXiv, CVE/security, local/shopping, OSS discovery, and answer/synthesis queries

• Quality reports + doctor checks — optional routing/result diagnostics plus compact offline health checks for configured providers/cache

• Research mode — opt-in multi-provider search + top-source extraction with a time budget

• Onboarding CLI — status, list, setup, and persistent routing config helpers for MCP env/config wiring

• Zero-install run — uvx web-search-plus-mcp

• MCP-native — stdio server exposing stable web_search and web_extract tools

Related MCP server: OneSearch MCP Server

🚀 Quick Start

# Run the MCP server instantly with uvx
uvx web-search-plus-mcp

# Or install globally
pip install web-search-plus-mcp
web-search-plus-mcp

At least one provider credential is required for search. Extraction needs at least one extraction-capable provider key.

🧭 Easier onboarding

Check configured providers:

web-search-plus-mcp status

List providers or presets:

web-search-plus-mcp list providers
web-search-plus-mcp list presets

Write a starter .env template and print a canonical MCP stdio snippet:

web-search-plus-mcp setup --preset starter

The recommended starter preset is You.com + Serper + Linkup. It gives a practical Routing v2 baseline for fast current search, Google-style discovery, and extraction workflows without wiring every provider on day one.

status returns a non-zero exit code when no search provider is configured, which makes it usable as a config check in scripts.

Persistent routing preferences live in config.json rather than .env:

web-search-plus-mcp config show
web-search-plus-mcp config set-default you        # strict fixed-provider mode
web-search-plus-mcp config set-routing on         # restore Routing v2 auto-routing
web-search-plus-mcp config set-priority you,serper,exa,firecrawl,tavily,linkup,parallel,brave
web-search-plus-mcp config set-fallback serper
web-search-plus-mcp config disable perplexity
web-search-plus-mcp config enable perplexity
web-search-plus-mcp config disable kilo-perplexity
web-search-plus-mcp config set-threshold 0.45
web-search-plus-mcp config reset --yes

Use --config-path /path/to/config.json or WEB_SEARCH_PLUS_CONFIG=/path/to/config.json for isolated MCP host installs. Provider secrets stay in environment variables; routing behavior stays in config.json.

Other presets:

• minimal — You.com only

• lean — You.com + Linkup

• starter — You.com + Serper + Linkup

• all — every supported provider env var

⚙️ MCP host config

Canonical stdio snippet for Claude Desktop, Cursor, NanoBot, or Hermes native MCP:

{
  "mcpServers": {
    "web-search-plus": {
      "command": "uvx",
      "args": ["web-search-plus-mcp"],
      "env": {
        "YOU_API_KEY": "your_you_key",
        "SERPER_API_KEY": "your_serper_key",
        "LINKUP_API_KEY": "your_linkup_key"
      }
    }
  }
}

Common places to paste this snippet:

• Claude Desktop macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

• Claude Desktop Windows: %APPDATA%\\Claude\\claude_desktop_config.json

• Claude Desktop Linux: ~/.config/Claude/claude_desktop_config.json

• Cursor: project/user MCP config using the same mcpServers shape

• Hermes native MCP: ~/.hermes/config.yaml under mcp_servers with equivalent command/env fields

You can also place a .env file next to the package/project with the same variables.

🔎 Search Providers

• You.com — fast Routing v2 core provider for current, multilingual, and answer-shaped snippets

• Serper — Google-style facts, news, shopping, local queries

• Exa — semantic discovery, GitHub/docs, arXiv/academic, and OSS discovery

• Firecrawl — web search plus scrape-ready content

• Parallel — explicit-only LLM-ready web search with long excerpts (PARALLEL_API_KEY, auto_allow=false)

• Tavily — research and analysis

• Linkup — source-backed grounding/citations

• Brave — explicit-only independent web index by default (BRAVE_API_KEY, auto_allow=false)

• Perplexity — explicit-only native Perplexity API synthesized answers (PERPLEXITY_API_KEY, sonar-pro, auto_allow=false)

• Kilo Perplexity — explicit-only Perplexity via Kilo gateway (KILOCODE_API_KEY, perplexity/sonar-pro, auto_allow=false)

• SearXNG — privacy-first self-hosted meta-search

• SerpBase — explicit-only Google SERP API (SERPBASE_API_KEY, auto_allow=false)

• Querit — explicit-only multilingual, real-time AI search (QUERIT_API_KEY, auto_allow=false)

📄 Extract Providers

• Tavily — default first choice; fastest reliable extraction in the v2.1 benchmark

• Exa — fast contents API, strong for docs/academic pages

• Linkup — clean markdown and source-grounded fetches

• Parallel — fast excerpt-rich docs fallback with optional full-content extraction

• Firecrawl — robust scrape fallback, useful for JS-heavy/blocked pages

• You.com — LLM-ready snippets/content where available

🛠 MCP Tool Reference

This MCP server exposes stable web_search and web_extract tools. The old beta web_answer tool was removed to match Web Search Plus v2.1+: use web_search for source discovery and let the MCP host synthesize from results when needed.

The Hermes plugin exposes the same stable capability as web_search_plus and web_extract_plus; the names differ because MCP and Hermes use different tool surfaces.

web_search

Use for source discovery, current events, prices, weather, sports lineups, schedules, and whenever you want the raw search landscape first.

Parameters:

• query — required search query

• provider — auto, serper, brave, tavily, exa, linkup, firecrawl, parallel, perplexity, kilo-perplexity, you, searxng, serpbase, querit

• count — results to return, default 5, max 20

• depth — Exa depth: normal, deep, deep-reasoning

• time_range — hour, day, week, month, year

• include_domains / exclude_domains — domain allow/deny lists

• mode — normal or research

• quality_report — include routing/result diagnostics

• research_time_budget — best-effort wall-clock budget for research mode

Example MCP arguments:

{
  "query": "latest AI hardware news",
  "provider": "auto",
  "count": 5,
  "quality_report": true
}

web_extract

Parameters:

• urls — required list of URLs

• provider — auto, tavily, exa, linkup, parallel, firecrawl, you

• format — markdown or html

• include_images — include image metadata when supported

• include_raw_html — include raw HTML when supported

• render_js — render JavaScript before extraction when supported

Example MCP arguments:

{
  "urls": ["https://example.com"],
  "provider": "auto",
  "format": "markdown"
}

🧠 Routing v2 Examples

• 東京 AI ニュース 今日 → You.com multilingual/current search

• arXiv 2024 LLM scaling laws → Exa academic discovery

• CVE-2025 openssl advisory → Serper security/current search

• best bookshelf speakers under 1000 EUR Austria → Serper/Firecrawl shopping/local search

• open source alternatives to Linear → Exa/Firecrawl OSS discovery

• summarize the tradeoffs of RAG vs fine-tuning → You.com with synthesis hint metadata for the MCP host

Guarded providers can still be called explicitly. To let one participate in provider="auto", opt in:

web-search-plus-mcp config set-auto-allow parallel on
web-search-plus-mcp config set-auto-allow parallel off

Credits

Built on the Web Search Plus routing engine and packaged as a standalone MCP server.

License

MIT © 2026 robbyczgw-cla