cloudflare-browser-rendering
Use Cloudflare Browser Rendering REST APIs to extract rendered webpage content as Markdown or crawl whole sites asynchronously. Use when normal web_fetch is insufficient because pages are JavaScript-heavy, require render-time extraction, or you need multi-page site crawling for docs, research, monitoring, or RAG preparation. Prefer this skill for: (1) converting a rendered page to Markdown with /markdown, (2) crawling a documentation site or knowledge base with /crawl, (3) controlling render/load behavior via gotoOptions, cookies, auth, userAgent, or request filtering. Do not use it for interactive login/button-click workflows; use browser for those.
Install via CLI (Recommended)
clawhub install openclaw/skills/skills/cytwyatt/cloudflare-browser-rendering-skillCloudflare Browser Rendering
Overview
Use this skill to bridge the gap between lightweight web_fetch and full interactive browser automation.
Routing rule:
- Use
web_fetchfor simple static pages and quick reads. - Use this skill when content depends on JavaScript rendering or when you need to crawl many related pages.
- Use
browserwhen the task requires interaction such as login, clicking, typing, or manual flow control.
Quick decision guide
- Single page, static, fastest path matters ->
web_fetch - Single page, JS-heavy, want clean markdown ->
/markdown - Whole docs/blog/help center crawl ->
/crawl - Needs login/UI actions ->
browser
If uncertain, start with web_fetch. Escalate to /markdown if the page is incomplete or empty. Escalate to /crawl only when multiple pages are needed.
Read references/decision-guide.md for routing details and references/*.md for endpoint notes.
Prerequisites
Expect these environment variables to be available before running the scripts:
CLOUDFLARE_API_TOKENCLOUDFLARE_ACCOUNT_ID
The token needs Browser Rendering Write for /markdown and crawl creation. Reading crawl results can use Browser Rendering Read or Write.
Single-page extraction with /markdown
Use scripts/cf_markdown.py.
Examples:
python3 scripts/cf_markdown.py --url https://example.com
python3 scripts/cf_markdown.py --url https://example.com --wait-until networkidle0
python3 scripts/cf_markdown.py --url https://example.com --wait-until networkidle0 --timeout-ms 60000
python3 scripts/cf_markdown.py --url https://example.com --cache-ttl 0 --json
python3 scripts/cf_markdown.py --html '<div>Hello</div>'
python3 scripts/cf_markdown.py --url https://example.com --user-agent 'Mozilla/5.0 ...'
python3 scripts/cf_markdown.py --url https://example.com --cookies-json '[{"name":"session","value":"abc","domain":"example.com"}]'
python3 scripts/cf_markdown.py --url https://example.com --authenticate-json '{"username":"u","password":"p"}'
python3 scripts/cf_markdown.py --url https://example.com --reject-request-pattern-json '["/^.*\\\\.(css)$/"]'
Guidelines:
- Prefer
--wait-until networkidle0ornetworkidle2for SPA/JS-heavy pages. - If a JS-heavy page times out, first raise
--timeout-ms(for example60000), then consider falling back todomcontentloadedif full idle waiting is too slow. - Use
--cache-ttl 0when freshness matters more than speed. - Use
--jsonwhen you want full API output for debugging. - Use raw JSON flags when you need advanced body fields without patching the script.
Multi-page crawling with /crawl
Use scripts/cf_crawl.py.
Examples:
Metadata
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Find the right skillPaste this into your clawhub.json to enable this plugin.
{
"plugins": {
"official-cytwyatt-cloudflare-browser-rendering-skill": {
"enabled": true,
"auto_update": true
}
}
}