If your Hermes Agent keeps prefacing answers with “As of my knowledge cutoff in 2024…”, the model isn’t lazy — it just lacks a live search tool. The catch is that Tavily, Firecrawl, and Exa all require API keys, and costs can add up.

Hermes already ships with three zero-cost search options:

1. ddgs — DuckDuckGo search, no API key, install a Python package and go.
2. SearXNG — self-hosted meta-search engine, aggregating 70+ sources including Google, Bing, and Brave.
3. brave-free — Brave Search’s free Data-for-Search tier, 2,000 queries per month.

This guide walks you through installing, configuring, and picking the right free backend for your Hermes setup.

1. Why do LLMs need live search?

Model knowledge cutoffs, frequent software releases, and fast-moving news all make static training data stale. Hermes can run terminals and browse the web, but the most efficient path is to let the agent search on demand.

• Ask “What’s new in PostgreSQL 17?” → get the official 2026 docs.
• Ask “Latest stable Python version” → get the real version number, not a guess from memory.
• Verify claims, compare products, check papers — all from a single prompt.

Hermes separates the two concerns cleanly:

• web_search finds candidate pages.
• web_extract reads and distills a specific page.
• You can even use different backends for each capability.

2. Hermes web backends at a glance

tools/web_tools.py currently supports seven providers:

Backend	API key needed?	Supports web_extract?	Best for
ddgs	No	No	Fastest setup, zero cost
searxng	No	No	Privacy, control, power users
brave-free	Free tier key	No	Better quality, light maintenance
tavily	Paid key	Yes	High-quality search + extract
exa	Paid key	Yes	Strong semantic search
parallel	Paid key	Yes	Enterprise workloads
firecrawl	Paid key / Nous Subscription	Yes	Search + extract in one

The free options are search-only. If you need page extraction, configure web.extract_backend separately (Firecrawl, Tavily, Exa, or Parallel).

3. Option A: ddgs (DuckDuckGo) — fastest, zero setup

Hermes bundles the ddgs plugin (plugins/web/ddgs), built on the community duckduckgo-search Python package. It scrapes DuckDuckGo’s HTML results and requires no API key.

3.1 Install the dependency

# Inside the Hermes virtual environment
uv pip install -U ddgs
# or
pip install -U ddgs

Hermes’ interactive hermes tools configurator will also try to install this when you select DuckDuckGo.

3.2 Enable and configure

# Method 1: interactive setup (recommended)
hermes tools
# Check "Web Search & Scraping" → select DuckDuckGo → auto-install ddgs

# Method 2: edit config directly
hermes config set web.backend ddgs
hermes config set web.search_backend ddgs

Your ~/.hermes/config.yaml should now contain:

web:
  backend: ddgs
  search_backend: ddgs

3.3 Verify it works

Start Hermes and ask:

> Search for "Hermes Agent v0.18 new features"

If you see Hermes call web_search_tool and return JSON with titles, URLs, and descriptions, ddgs is active.

3.4 Caveats

• DuckDuckGo enforces server-side rate limits. Don’t hammer it with rapid queries.
• Search-only: full-page extraction needs another provider.
• Occasional timeouts are usually DuckDuckGo throttling. Retry later or switch to SearXNG/Brave.

4. Option B: self-hosted SearXNG — best privacy and coverage

SearXNG is a meta-search engine that aggregates results from Google, Bing, Brave, DuckDuckGo, Wikipedia, and 70+ other sources. It does not profile users and requires no commercial API — just a machine capable of running Docker.

4.1 One-liner SearXNG deployment

# Run locally
docker run -d   --name searxng   -p 127.0.0.1:8080:8080   -e BASE_URL=http://localhost:8080   --restart unless-stopped   searxng/searxng

Verify by opening http://localhost:8080 and running a search.

4.2 Wire Hermes to SearXNG

hermes config set web.backend searxng
hermes config set web.search_backend searxng
hermes config set env.SEARXNG_URL http://localhost:8080

Or add to ~/.hermes/.env:

SEARXNG_URL=http://localhost:8080

4.3 Why choose SearXNG?

• Multi-engine aggregation: one query covers many search engines.
• Privacy: no commercial API sees your queries.
• Control: you set rate limits, proxies, and fallback engines.
• Free: only your server cost.

4.4 Limitations

• You must maintain the service.
• Some engines (e.g., Google) may block your SearXNG IP; configure rotation or fallback engines.
• Search-only: page extraction needs another provider.

5. Option C: Brave Search Free Tier — high quality, low maintenance

Brave Search offers a free Data-for-Search API tier with 2,000 queries per month, enough for most personal use.

5.1 Get a free key

1. Visit https://brave.com/search/api/
2. Sign up and create a Data-for-Search API key.
3. Copy BRAVE_SEARCH_API_KEY.

5.2 Configure Hermes

hermes config set env.BRAVE_SEARCH_API_KEY "your-key-here"
hermes config set web.backend brave-free
hermes config set web.search_backend brave-free

Or in ~/.hermes/.env:

BRAVE_SEARCH_API_KEY=your-key-here

5.3 Trade-offs

• Results are usually more stable than DuckDuckGo scraping.
• Official API with clear limits (1 qps on the free tier).
• Still search-only; pair with an extract provider for full-page reading.

6. Split search and extraction: advanced setup

Free search backends typically don’t fetch full pages. When you ask “Summarize this article in 3 bullets,” Hermes needs web_extract. You can decouple the two capabilities:

web:
  search_backend: ddgs      # or searxng / brave-free
  extract_backend: firecrawl # or tavily / exa / parallel
  backend: firecrawl        # fallback

• search_backend controls web_search.
• extract_backend controls web_extract.
• If you want to stay entirely free, use ddgs for search and the built-in browser tools (browser_navigate, browser_snapshot) to read pages manually.

7. Troubleshooting checklist

Symptom	Cause	Fix
web_search tool missing	Web toolset disabled	Run hermes tools and enable “Web Search & Scraping”
ddgs error “package is not installed”	ddgs not installed	uv pip install -U ddgs
SearXNG connection fails	SEARXNG_URL wrong or service down	Check URL and Docker status
Brave 401/403	Invalid key or quota exhausted	Check key and quota in Brave console
Search doesn’t extract pages	No extract provider configured	Set web.extract_backend or use browser tools

8. Which free option is right for you?

Factor	ddgs	SearXNG	Brave Free
Setup difficulty	Easiest	Medium	Easy
Cost	$0	$0 (self-hosted)	$0 (2,000/mo)
Privacy	Medium	Highest	Medium
Result quality	Good	Depends on engines	Better
Stability	Variable	You control it	Better
Recommended for	Beginners / quick try	Power users / privacy	Light daily use

9. Action plan

1. Start with ddgs: get Hermes searching in under 5 minutes.
2. Add SearXNG later: if you search frequently, self-host for stability.
3. Keep Brave Free as a backup: switch when ddgs is rate-limited or SearXNG is down.
4. Don’t rely on search alone: free search finds results; understanding them still needs the model plus extract/browser tools.

Conclusion

Hermes Agent doesn’t have outdated answers by default — it just doesn’t have live search enabled out of the box. Install ddgs, SearXNG, or Brave Free and it instantly becomes a research assistant that can pull current information.

The free backends are already in the Hermes source tree. Open a terminal, install one, and stop living in 2024.