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 gebruder/wirken --skill web-fetchgit clone --depth 1 https://github.com/gebruder/wirkenWrote 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/gebruder/wirken/web-fetch)<a href="https://agentmods.dev/skills/gebruder/wirken/web-fetch"><img src="https://agentmods.dev/badge/skills/gebruder/wirken/web-fetch.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Data Exfiltration · line 32 Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 | $0.00009 | $0.00324 |
| Opus 5 | $0.00005 | $0.00162 |
| Sonnet 5 | $0.00002 | $0.00065 |
| Haiku 4.5 | $0.00001 | $0.00032 |
Grade B, and why
web-fetch scanned grade B with 2 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 8d 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
- JSON: `curl -s -X POST -H "Content-Type: application/json" -d '{"key":"value"}' "<url>"` Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
bins: [curl] What it actually says
Web Fetch
Fetch web content using curl.
Fetch page content
- HTML:
curl -sL "<url>" - Plain text (strip tags):
curl -sL "<url>" | sed 's/<[^>]*>//g' | head -100 - Headers only:
curl -sI "<url>" - Follow redirects:
curl -sL "<url>"(the -L flag follows redirects) - JSON API:
curl -s "<url>" | jq .
Download files
- Save with original name:
curl -sLO "<url>" - Save with custom name:
curl -sL -o <filename> "<url>"
POST requests
- JSON:
curl -s -X POST -H "Content-Type: application/json" -d '{"key":"value"}' "<url>" - Form data:
curl -s -X POST -d "key=value" "<url>"
Tips
- Always use
-s(silent) to suppress progress bars - Use
-Lto follow redirects - Pipe through
head -100for large pages to avoid flooding output - Use
jqfor JSON responses when available
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.
- 8d ago First seen · 46 lines · 9 tokens per session scan B dde328b604f6
web-fetch is a skill published in the GitHub repository gebruder/wirken (171 stars, last pushed 5d ago), licensed MIT. It adds 9 tokens to every session and 324 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, 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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