Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add smallnest/goclaw --skill crawl4ai-skillgit clone --depth 1 https://github.com/smallnest/goclawWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/smallnest/goclaw/crawl4ai-skill)<a href="https://agentmods.dev/skills/smallnest/goclaw/crawl4ai-skill"><img src="https://agentmods.dev/badge/skills/smallnest/goclaw/crawl4ai-skill/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/smallnest/goclaw/crawl4ai-skill"><img src="https://agentmods.dev/badge/skills/smallnest/goclaw/crawl4ai-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00052 | $0.02533 |
| Opus 5 | $0.00026 | $0.01267 |
| Sonnet 5 | $0.00010 | $0.00507 |
| Haiku 4.5 | $0.00005 | $0.00253 |
Grade A, and why
crawl4ai scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 414 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Crawl4AI
Overview
Crawl4AI provides comprehensive web crawling and data extraction capabilities. This skill supports both CLI (recommended for quick tasks) and Python SDK (for programmatic control).
Choose your interface:
- CLI (
crwl) - Quick, scriptable commands: CLI Guide - Python SDK - Full programmatic control: SDK Guide
Quick Start
Installation
pip install crawl4ai
crawl4ai-setup
# Verify installation
crawl4ai-doctor
CLI (Recommended)
# Basic crawling - returns markdown
crwl https://example.com
# Get markdown output
crwl https://example.com -o markdown
# JSON output with cache bypass
crwl https://example.com -o json -v --bypass-cache
# See more examples
crwl --example
Python SDK
import asyncio
from crawl4ai import AsyncWebCrawler
async def main():
async with AsyncWebCrawler() as crawler:
result = await crawler.arun("https://example.com")
print(result.markdown[:500])
asyncio.run(main())
For SDK configuration details: SDK Guide - Configuration (lines 61-150)
Core Concepts
Configuration Layers
Both CLI and SDK use the same underlying configuration:
| Concept | CLI | SDK |
|---|---|---|
| Browser settings | -B browser.yml or -b "param=value" |
BrowserConfig(...) |
| Crawl settings | -C crawler.yml or -c "param=value" |
CrawlerRunConfig(...) |
| Extraction | -e extract.yml -s schema.json |
extraction_strategy=... |
| Content filter | -f filter.yml |
markdown_generator=... |
Key Parameters
Browser Configuration:
headless: Run with/without GUIviewport_width/height: Browser dimensionsuser_agent: Custom user agentproxy_config: Proxy settings
Crawler Configuration:
page_timeout: Max page load time (ms)wait_for: CSS selector or JS condition to wait forcache_mode: bypass, enabled, disabledjs_code: JavaScript to executecss_selector: Focus on specific element
What ships with it
15 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- .claude/settings.local.json 89 B
- README.md 7.2 KB
- references/cli-guide.md 7.9 KB
- references/complete-sdk-reference.md 220 KB
- references/sdk-guide.md 9.8 KB
- scripts/basic_crawler.py 2.6 KB runs code
- scripts/batch_crawler.py 7.5 KB runs code
- scripts/extraction_pipeline.py 13 KB runs code
- scripts/google_search.py 11 KB runs code
- tests/README.md 1.4 KB
- tests/run_all_tests.py 1.4 KB runs code
- tests/test_advanced_patterns.py 2.2 KB runs code
- tests/test_basic_crawling.py 1.6 KB runs code
- tests/test_data_extraction.py 2.1 KB runs code
- tests/test_markdown_generation.py 3.0 KB runs code
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 414 lines · 52 tokens per session scan A f626bf20c264
crawl4ai is a skill published in the GitHub repository smallnest/goclaw (602 stars, last pushed 5mo ago), licensed MIT. It adds 52 tokens to every session and 2,533 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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