Lesson 16 — OpenClaw Multi Search Engine: Query 17 Search Engines Simultaneously with No API Key (2026)

Goal: Install the Multi Search Engine Skill so OpenClaw can query Baidu, Bing, DuckDuckGo, and 14 more search engines with no API Key required.

Why Do You Need Multi Search Engine?

OpenClaw's built-in web search only integrates one engine, and users often face two pain points:

1. Single perspective: A single search engine has algorithmic biases — different engines cover the same topic from very different angles
2. Coverage gaps: Some content is indexed better by certain engines; no single engine covers everything

Multi Search Engine Skill solves this in one install: no API Keys required, direct access to 17 engines, including many that are accessible without any geographic restrictions.

ClawHub's 5th most popular Skill (93k downloads).

17 Supported Search Engines

Broadly Accessible Engines

International Engines

Step 1: Install the Skill

In WebChat or Telegram, send:

/install @gpyangyoujun/multi-search-engine

Verify installation:

pnpm openclaw skills list
# multi-search-engine should appear in the list

Step 2: Basic Usage — Search with a Specific Engine

After installation, you can specify which engine to use in any search request:

Search on Bing: top AI language models ranking 2026

Search on DuckDuckGo: privacy-focused email providers 2026

Query WolframAlpha: how many USD is 1000 EUR

Or use the slash command format:

/search engine=bing query=OpenClaw latest version

WolframAlpha is especially useful for math calculations and unit conversions — it returns computed results directly rather than a list of web pages.

Step 3: Advanced — Multi-Engine Comparison Search

Searching the same question across multiple engines simultaneously and having AI synthesize all results is this Skill's most powerful feature:

Search "most valuable programming language to learn in 2026" on Bing, Google, and DuckDuckGo, then give me a combined conclusion

AI will fire three search requests in parallel and compare:

Search Result Comparison:

[Bing Results] Python ranks #1, main reason being the AI/ML ecosystem...
[DuckDuckGo Results] Rust growing fastest, community rating #1 for the fifth consecutive year...
[Google Results] TypeScript has the highest demand in frontend/full-stack roles...

Combined Conclusion: If your goal is AI, pick Python; for systems programming, pick Rust;
for full-stack web, pick TypeScript. The three results have different emphases —
choose based on your specific direction.

This kind of comparison search effectively counteracts the algorithmic bias of any single engine.

Step 4: Advanced Search Operators

Multi Search Engine supports native advanced search syntax for each engine:

Search Google: site:github.com openclaw stars:>1000

Search Bing: openclaw tutorial site:reddit.com

Search for OpenClaw-related news from the last month:
/search engine=bing query=OpenClaw after:2026-02-01

Common operator cheatsheet:

site:domain.com        # Limit to a specific site
"exact phrase"         # Exact match
-excluded-word         # Exclude a keyword
filetype:pdf           # Specific file type
after:2026-01-01       # Time filter (Bing/Google)
intitle:keyword        # Keyword in title

Step 5: Privacy Engine Use Cases

The need to use privacy-focused search engines for sensitive topics (health questions, competitive research, business intelligence) is growing. When you don't want to be tracked:

Search DuckDuckGo: competitor company A's latest funding round (I don't want this search recorded)

Search Startpage: anxiety medication side effects

Startpage's advantage is returning Google-quality results without recording your IP or search history. Brave Search has its own independent index that doesn't rely on Google or Bing, with no commercial bias in results.

FAQ

Can OpenClaw search without restrictions?

Yes for many engines. Multi Search Engine's domestic engines (Baidu, Bing domestic, Sogou, 360 Search, etc.) are directly accessible. International engines like Google and DuckDuckGo may require a proxy depending on your location. You can set a proxy in OpenClaw's configuration file.

What are all 17 supported search engines?

Broadly accessible engines (8): Baidu, Bing, Sogou, 360 Search, Shenma, Miji Search, Zhihu Search, Bilibili Search. International engines (9): Google, DuckDuckGo, Startpage, Brave Search, WolframAlpha, Wikipedia, arXiv, GitHub, Reddit. All engines require no separate API Key — the Skill calls public search interfaces directly.

What's the difference from the built-in web browsing tool?

The built-in web browsing tool only opens URLs you specify — it "reads a known page." Multi Search Engine actively sends search requests to retrieve relevant content from billions of pages — it "discovers unknown pages." The two are complementary: use Multi Search Engine to find relevant links, then use the web browsing tool to deeply read the full content of a specific page.

Does WolframAlpha require a separate API Key?

No. The Skill wraps WolframAlpha's public query interface — common math calculations, unit conversions, and scientific data queries don't need an API Key. If you need higher-frequency queries or advanced features (like full step-by-step derivations), you can apply for a free WolframAlpha API Key and fill it in the Skill config, but it's not necessary for everyday use.

Next Steps

• Lesson 17 — Install Nano PDF Skill to merge, split, and compress PDFs with natural language