Agent skill
duckduckgo-search
Free web search via DuckDuckGo — text, news, images, videos. No API key needed. Prefer the `ddgs` CLI when installed; use the Python DDGS library only after verifying that `ddgs` is available in the current runtime.
Install this agent skill to your Project
npx add-skill https://github.com/NousResearch/hermes-agent/tree/main/optional-skills/research/duckduckgo-search
Metadata
Additional technical details for this skill
- hermes
-
{ "tags": [ "search", "duckduckgo", "web-search", "free", "fallback" ], "related_skills": [ "arxiv" ], "fallback_for_toolsets": [ "web" ] }
SKILL.md
DuckDuckGo Search
Free web search using DuckDuckGo. No API key required.
Preferred when web_search is unavailable or unsuitable (for example when FIRECRAWL_API_KEY is not set). Can also be used as a standalone search path when DuckDuckGo results are specifically desired.
Detection Flow
Check what is actually available before choosing an approach:
# Check CLI availability
command -v ddgs >/dev/null && echo "DDGS_CLI=installed" || echo "DDGS_CLI=missing"
Decision tree:
- If
ddgsCLI is installed, preferterminal+ddgs - If
ddgsCLI is missing, do not assumeexecute_codecan importddgs - If the user wants DuckDuckGo specifically, install
ddgsfirst in the relevant environment - Otherwise fall back to built-in web/browser tools
Important runtime note:
- Terminal and
execute_codeare separate runtimes - A successful shell install does not guarantee
execute_codecan importddgs - Never assume third-party Python packages are preinstalled inside
execute_code
Installation
Install ddgs only when DuckDuckGo search is specifically needed and the runtime does not already provide it.
# Python package + CLI entrypoint
pip install ddgs
# Verify CLI
ddgs --help
If a workflow depends on Python imports, verify that same runtime can import ddgs before using from ddgs import DDGS.
Method 1: CLI Search (Preferred)
Use the ddgs command via terminal when it exists. This is the preferred path because it avoids assuming the execute_code sandbox has the ddgs Python package installed.
# Text search
ddgs text -k "python async programming" -m 5
# News search
ddgs news -k "artificial intelligence" -m 5
# Image search
ddgs images -k "landscape photography" -m 10
# Video search
ddgs videos -k "python tutorial" -m 5
# With region filter
ddgs text -k "best restaurants" -m 5 -r us-en
# Recent results only (d=day, w=week, m=month, y=year)
ddgs text -k "latest AI news" -m 5 -t w
# JSON output for parsing
ddgs text -k "fastapi tutorial" -m 5 -o json
CLI Flags
| Flag | Description | Example |
|---|---|---|
-k |
Keywords (query) — required | -k "search terms" |
-m |
Max results | -m 5 |
-r |
Region | -r us-en |
-t |
Time limit | -t w (week) |
-s |
Safe search | -s off |
-o |
Output format | -o json |
Method 2: Python API (Only After Verification)
Use the DDGS class in execute_code or another Python runtime only after verifying that ddgs is installed there. Do not assume execute_code includes third-party packages by default.
Safe wording:
- "Use
execute_codewithddgsafter installing or verifying the package if needed"
Avoid saying:
- "
execute_codeincludesddgs" - "DuckDuckGo search works by default in
execute_code"
Important: max_results must always be passed as a keyword argument — positional usage raises an error on all methods.
Text Search
Best for: general research, companies, documentation.
from ddgs import DDGS
with DDGS() as ddgs:
for r in ddgs.text("python async programming", max_results=5):
print(r["title"])
print(r["href"])
print(r.get("body", "")[:200])
print()
Returns: title, href, body
News Search
Best for: current events, breaking news, latest updates.
from ddgs import DDGS
with DDGS() as ddgs:
for r in ddgs.news("AI regulation 2026", max_results=5):
print(r["date"], "-", r["title"])
print(r.get("source", ""), "|", r["url"])
print(r.get("body", "")[:200])
print()
Returns: date, title, body, url, image, source
Image Search
Best for: visual references, product images, diagrams.
from ddgs import DDGS
with DDGS() as ddgs:
for r in ddgs.images("semiconductor chip", max_results=5):
print(r["title"])
print(r["image"])
print(r.get("thumbnail", ""))
print(r.get("source", ""))
print()
Returns: title, image, thumbnail, url, height, width, source
Video Search
Best for: tutorials, demos, explainers.
from ddgs import DDGS
with DDGS() as ddgs:
for r in ddgs.videos("FastAPI tutorial", max_results=5):
print(r["title"])
print(r.get("content", ""))
print(r.get("duration", ""))
print(r.get("provider", ""))
print(r.get("published", ""))
print()
Returns: title, content, description, duration, provider, published, statistics, uploader
Quick Reference
| Method | Use When | Key Fields |
|---|---|---|
text() |
General research, companies | title, href, body |
news() |
Current events, updates | date, title, source, body, url |
images() |
Visuals, diagrams | title, image, thumbnail, url |
videos() |
Tutorials, demos | title, content, duration, provider |
Workflow: Search then Extract
DuckDuckGo returns titles, URLs, and snippets — not full page content. To get full page content, search first and then extract the most relevant URL with web_extract, browser tools, or curl.
CLI example:
ddgs text -k "fastapi deployment guide" -m 3 -o json
Python example, only after verifying ddgs is installed in that runtime:
from ddgs import DDGS
with DDGS() as ddgs:
results = list(ddgs.text("fastapi deployment guide", max_results=3))
for r in results:
print(r["title"], "->", r["href"])
Then extract the best URL with web_extract or another content-retrieval tool.
Limitations
- Rate limiting: DuckDuckGo may throttle after many rapid requests. Add a short delay between searches if needed.
- No content extraction:
ddgsreturns snippets, not full page content. Useweb_extract, browser tools, or curl for the full article/page. - Results quality: Generally good but less configurable than Firecrawl's search.
- Availability: DuckDuckGo may block requests from some cloud IPs. If searches return empty, try different keywords or wait a few seconds.
- Field variability: Return fields may vary between results or
ddgsversions. Use.get()for optional fields to avoidKeyError. - Separate runtimes: A successful
ddgsinstall in terminal does not automatically meanexecute_codecan import it.
Troubleshooting
| Problem | Likely Cause | What To Do |
|---|---|---|
ddgs: command not found |
CLI not installed in the shell environment | Install ddgs, or use built-in web/browser tools instead |
ModuleNotFoundError: No module named 'ddgs' |
Python runtime does not have the package installed | Do not use Python DDGS there until that runtime is prepared |
| Search returns nothing | Temporary rate limiting or poor query | Wait a few seconds, retry, or adjust the query |
CLI works but execute_code import fails |
Terminal and execute_code are different runtimes |
Keep using CLI, or separately prepare the Python runtime |
Pitfalls
max_resultsis keyword-only:ddgs.text("query", 5)raises an error. Useddgs.text("query", max_results=5).- Do not assume the CLI exists: Check
command -v ddgsbefore using it. - Do not assume
execute_codecan importddgs:from ddgs import DDGSmay fail withModuleNotFoundErrorunless that runtime was prepared separately. - Package name: The package is
ddgs(previouslyduckduckgo-search). Install withpip install ddgs. - Don't confuse
-kand-m(CLI):-kis for keywords,-mis for max results count. - Empty results: If
ddgsreturns nothing, it may be rate-limited. Wait a few seconds and retry.
Validated With
Validated examples against ddgs==9.11.2 semantics. Skill guidance now treats CLI availability and Python import availability as separate concerns so the documented workflow matches actual runtime behavior.
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