Borrowing it
Nothing to install: this file belongs to alleneubank/claude-code. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/alleneubank/claude-code/main/.claude/skills/web-fetch/SKILL.mdgit clone --depth 1 https://github.com/alleneubank/claude-codeWrote 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/alleneubank/claude-code/web-fetch)<a href="https://agentmods.dev/skills/alleneubank/claude-code/web-fetch"><img src="https://agentmods.dev/badge/skills/alleneubank/claude-code/web-fetch/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/alleneubank/claude-code/web-fetch"><img src="https://agentmods.dev/badge/skills/alleneubank/claude-code/web-fetch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk warn
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 | $0.00040 | $0.00876 |
| Opus 5.5 | $0.00016 | $0.00350 |
| Sonnet 5.5 | $0.00008 | $0.00175 |
| Haiku 4.5 | $0.00004 | $0.00088 |
Grade A, and why
web-fetch scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
command -v curl >/dev/null || echo "curl is required" How it starts
The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Web Content Fetching
Fetch web content in this order:
- Prefer markdown-native endpoints (
content-type: text/markdown) - Use selector-based HTML extraction for known sites
- Use the bundled Bun fallback script when selectors fail
Prerequisites
Verify required tools before extracting:
command -v curl >/dev/null || echo "curl is required"
command -v html2markdown >/dev/null || echo "html2markdown is required for HTML extraction"
command -v bun >/dev/null || echo "bun is required for fetch.ts fallback"
Install Bun dependencies for the bundled script:
cd ~/.claude/skills/web-fetch && bun install
Default Workflow
Use this as the default flow for any URL:
URL="<url>"
CONTENT_TYPE="$(curl -sIL "$URL" | awk -F': ' 'tolower($1)=="content-type"{print tolower($2)}' | tr -d '\r' | tail -1)"
if echo "$CONTENT_TYPE" | grep -q "markdown"; then
curl -sL "$URL"
else
curl -sL "$URL" \
| html2markdown \
--include-selector "article,main,[role=main]" \
--exclude-selector "nav,header,footer,script,style"
fi
Known Site Selectors
| Site | Include Selector | Exclude Selector |
|---|---|---|
| platform.claude.com | #content-container |
- |
| docs.anthropic.com | #content-container |
- |
| developer.mozilla.org | article |
- |
| github.com (docs) | article |
nav,.sidebar |
| Generic | article,main,[role=main] |
nav,header,footer,script,style |
Example:
curl -sL "<url>" \
| html2markdown \
--include-selector "#content-container" \
--exclude-selector "nav,header,footer"
Finding the Right Selector
When a site isn't in the patterns list:
# Check what content containers exist
curl -s "<url>" | grep -o '<article[^>]*>\|<main[^>]*>\|id="[^"]*content[^"]*"' | head -10
# Test a selector
curl -sL "<url>" | html2markdown --include-selector "<selector>" | head -30
# Check line count
curl -sL "<url>" | html2markdown --include-selector "<selector>" | wc -l
What ships with it
3 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.
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.
- 1mo ago First seen · 124 lines · 40 tokens per session scan A e5ffcd728501
web-fetch is a skill published in the GitHub repository alleneubank/claude-code (50 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 40 tokens to every session and 876 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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