FF ultimate-browsing
Renders, drives, and screenshots web pages: JS-rendered sources, clicks and forms, persistent logins, WAF-blocked hosts (platform-native readers, stealth Chrome), and the browsing lane of a research run, with screenshots as provenance. Not for plain search or unblocked static fetch.
Renders, drives, and screenshots web pages: JS-rendered sources, clicks and forms, persistent logins, WAF-blocked hosts (platform-native readers, stealth…
As a process F 44/100 · Will not run — References files that are not bundled: references/insane-search/*.md
What is at stake
The skill contains fragments that, in the wrong hands, cost money or data. Below: what the installer risks and what the author should do.
The skill tells the agent to hide things from you: not to show errors, not to mention actions, to report differently from what was done. You lose the ability to see what the agent really did.
Transparency beats a smooth answer. If the goal is to hide technical noise, ask the agent to "summarise briefly", not to "not mention".
The instructions or scripts send data out: environment variables, keys, file contents, chat history. You may never notice, because the agent performs the upload as "part of the task".
If the upload is not needed for the task, remove it: catalogs flag such skills and delist them. If it is needed, name the destination explicitly, say what leaves the machine, and give the user a switch.
How to improve
- Address the high-severity findings: each costs 18 safety points. If one is a false positive, add the rule id to guard.allow in spec.yaml.
- Say in the description WHEN to use the skill ("use when…", example requests): that is the agent's main cue.
- The text references files that are not there: add them or drop the references.
- Your own cases (evals/evals.json, 4–6 real requests with expected answers): the full check would then run those instead of a model-drafted suite.
- A spec.yaml with trigger phrases and assertions — a behaviour contract for CI; `skilltest init` writes a template.
Guard findings · 29
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high Concealment
en-hide-from-userengine/AGENTS.md:41Instruction to hide actions from the usernever had. A wholesale overwrite with upstream HEAD would silently delete it.
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high Exfiltration
intent-browser-credential-storeSKILL.md:29Accesses a browser credential / cookie store+- login session across pages / inject cookies ------ TIER 2 2b Chrome stealth (profile + cookies)
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high Exfiltration
intent-browser-credential-storeSKILL.md:117Accesses a browser credential / cookie storepython3 scripts/extract_cookies.py --browser chrome --domain youtube.com --output ~/.local/state/omo-cookies/youtube.cookies.json
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high Exfiltration
intent-browser-credential-storeSKILL.md:119Accesses a browser credential / cookie storepython3 scripts/extract_cookies.py --browser chrome --domain youtube.com --inject --cdp 9242
Medium and low: 25
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medium Exfiltration
intent-browser-credential-storereferences/agent-reach/social.md:123Accesses a browser credential / cookie store (quoted — discussed, not commanded)> **注意**: 服务器 IP 可能遇到 412 错误。使用 `--cookies-from-browser chrome` 或配置代理。
quoted -
medium Exfiltration
intent-browser-credential-storereferences/agent-reach/video.md:69Accesses a browser credential / cookie store (quoted — discussed, not commanded)> **412 风控**: 海外 IP 必须提供 Cookie(`--cookies-from-browser chrome` 或 `--cookies /path/to/cookies.txt`),国内 IP 一般不受影响。
quoted -
medium Exfiltration
net-credential-usereferences/insane-search/jina.md:16Credential used in a network call (verify the destination is the intended service)curl -s -H "Authorization: Bearer ${JINA_API_KEY}" "https://r.jina.ai/{URL}" -
medium Exfiltration
net-credential-usereferences/insane-search/json-api.md:48Credential used in a network call (verify the destination is the intended service)ids = json.load(urllib.request.urlopen('https://hacker-news.firebaseio.com/v0/topstories.json?limitToFirst=5&orderBy=\"\$key\"')) -
medium Exfiltration
intent-browser-credential-storescripts/cookie_paths.py:101Accesses a browser credential / cookie store (quoted — discussed, not commanded)db = entry / "cookies.sqlite"
quoted -
medium Exfiltration
intent-browser-credential-storescripts/extract_cookies.py:10Accesses a browser credential / cookie store (quoted — discussed, not commanded)python extract_cookies.py --browser chrome --domain youtube.com --output /tmp/cookies.json
quoted -
medium Exfiltration
intent-browser-credential-storescripts/extract_cookies.py:11Accesses a browser credential / cookie store (quoted — discussed, not commanded)python extract_cookies.py --browser chrome --domain youtube.com --inject --cdp 9242
quoted -
medium Exfiltration
intent-browser-credential-storescripts/extract_cookies.py:258Accesses a browser credential / cookie store (quoted — discussed, not commanded)print(f"Injected {ok}/{len(filtered)} cookies into local Chrome (playwright-core CDP {cdp_port})")quoted -
medium Exfiltration
intent-browser-credential-storeSKILL.md:112Accesses a browser credential / cookie store (quoted — discussed, not commanded)`scripts/extract_cookies.py` reads cookies from a local Chromium-family or Firefox-family browser and optionally injects them into the running CDP session. It resolves browser profile paths and decryp
quoted -
low Obfuscation
obf-base64-blobengine/tests/fixtures/search_interstitial.html:7Long base64-looking blob (detector / deny-list definition; security demo / example; test fixture / example file)'*/var yt=153,T=function(y,x,Y,E,t,Z,W,f,n,p,V){(y&125)==y&&(p=(Y|7)- -1+(~Y^7),n=d5,t=[-82,48,-20,-47,74,-64,t,-71,-52,80],W=Nu[E.l](E.Du),W[E.l]=function(P){f=(p+=6+7*Y,p&=7,P)},W.concat=function(P,detectordemofixture -
low Obfuscation
obf-hex-escape-chainengine/tests/fixtures/search_interstitial.html:7Escaped/char-code string obfuscation (detector / deny-list definition; security demo / example; test fixture / example file)'*/var yt=153,T=function(y,x,Y,E,t,Z,W,f,n,p,V){(y&125)==y&&(p=(Y|7)- -1+(~Y^7),n=d5,t=[-82,48,-20,-47,74,-64,t,-71,-52,80],W=Nu[E.l](E.Du),W[E.l]=function(P){f=(p+=6+7*Y,p&=7,P)},W.concat=function(P,detectordemofixture -
low Secrets in code
secret-high-entropy-tokenengine/tests/fixtures/search_interstitial.html:7High-entropy token-like string (may be an id, hash or a credential) (detector / deny-list definition; test fixture / example file)'*/var yt=153,T=function(y,x,Y,E,t,Z,W,f,n,p,V){(y&125)==y&&(p=(Y|7)- -1+(~Y^7),n=d5,t=[-82,48,-20,-47,74,-64,t,-71,-52,80],W=Nu[E.l](E.Du),W[E.l]=function(P){f=(p+=6+7*Y,p&=7,P)},W.concat=function(P,detectorfixture -
low Secrets in code
secret-high-entropy-tokenengine/tests/fixtures/wayback_snapshot.html:20High-entropy token-like string (may be an id, hash or a credential) (test fixture / example file; quoted — discussed, not commanded)"wgPageContentModel":"wikitext","wgRelevantPageName":"Web_archiving","wgRelevantArticleId":6014932,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestric
fixturequoted -
low Obfuscation
obf-hex-escape-chainengine/tests/fixtures/wayback_snapshot.html:472Escaped/char-code string obfuscation (detector / deny-list definition; security demo / example; test fixture / example file)<li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://web.archive.org/web/20241227132135/https://ar.wikipedia.org/wiki/%D8%A3%D8%B1%D8%B4%D9%81%D8%A9_%D8%A7%D9%84%D9%88%D9%8A%D8%A8
detectordemofixture -
low Secrets in code
secret-high-entropy-tokenengine/tests/fixtures/wayback_snapshot.html:748High-entropy token-like string (may be an id, hash or a credential) (test fixture / example file; quoted — discussed, not commanded)<li id="cite…a-3"><span class="mw-cite-backlink">^ <a href="#cite…3-0"><sup><i><b>a</b></i></sup></a> <a href="#cite…3-1"><sup><i><b>b</b></i></sup></a>
fixturequoted -
low Secrets in code
secret-high-entropy-tokenengine/tests/fixtures/wayback_snapshot.html:750High-entropy token-like string (may be an id, hash or a credential) (test fixture / example file; quoted — discussed, not commanded)<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-d…821
fixturequoted -
low Secrets in code
secret-high-entropy-tokenengine/tests/fixtures/wayback_snapshot.html:778High-entropy token-like string (may be an id, hash or a credential) (test fixture / example file; quoted — discussed, not commanded)<li id="cite…-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-d…238
fixturequoted -
low Exfiltration
intent-browser-credential-storescripts/cookie_paths.py:104Accesses a browser credential / cookie store (negated — the text forbids it)raise FileNotFoundError(f"no cookies.sqlite under {profile_root}")negated -
low Exfiltration
intent-browser-credential-storescripts/tests/test_cookie_domain_filter.py:62Accesses a browser credential / cookie store (test fixture / example file; quoted — discussed, not commanded)"Google/Chrome/User Data/Default/Cookies",
fixturequoted -
low Exfiltration
intent-browser-credential-storescripts/tests/test_cookie_domain_filter.py:87Accesses a browser credential / cookie store (test fixture / example file; quoted — discussed, not commanded)"Firefox/Profiles/abc.default/cookies.sqlite",
fixturequoted -
low Exfiltration
intent-browser-credential-storescripts/tests/test_extract_cookies.py:68Accesses a browser credential / cookie store (detector / deny-list definition; security demo / example; test fixture / example file)target = base / "Google/Chrome/Default/Cookies"
detectordemofixture -
low Exfiltration
intent-browser-credential-storescripts/tests/test_extract_cookies.py:75Accesses a browser credential / cookie store (detector / deny-list definition; security demo / example; test fixture / example file)target = base / "google-chrome/Default/Network/Cookies"
detectordemofixture -
low Exfiltration
intent-browser-credential-storescripts/tests/test_extract_cookies.py:82Accesses a browser credential / cookie store (detector / deny-list definition; security demo / example; test fixture / example file)target = base / "Google/Chrome/User Data/Default/Cookies"
detectordemofixture -
low Exfiltration
intent-browser-credential-storescripts/tests/test_extract_cookies.py:147Accesses a browser credential / cookie store (test fixture / example file; quoted — discussed, not commanded)"Google/Chrome/Default/Cookies",
fixturequoted -
low Exfiltration
intent-browser-credential-storescripts/tests/test_extract_cookies.py:160Accesses a browser credential / cookie store (test fixture / example file; quoted — discussed, not commanded)"Firefox/Profiles/abc.default/cookies.sqlite",
fixturequoted
Files scanned: 57. Evidence is masked. Grey chips explain why severity was lowered.
Against the Agent Skills spec
- warning
description-no-whendescription does not say WHEN to use the skill (no "use when") - warning
missing-refreference to a missing file: references/insane-search/*.md
Process rating: all ten parameters 44/100
- 0Tools and files. 1 referenced file(s) missing: references/insane-search/*.md
- 0Result and completion. Does not say what the result is
- 0Inputs and preconditions. Does not say what the process needs to start
- 0Progress reporting. Says nothing while it works
- 30Running it twice. 3 mutating operations with no state check
- 50When it triggers. No condition that starts the skill
- 85Steps. 7 steps, 1 vague phrases
- 100Failures and branches. 1 branches, has a failure section
- 100Consistency. Name and required fields are in place
- 100Execution cost. Instruction body is 2550 tokens
Everything here is measured from the skill text rather than judged by a model, so the numbers are checkable. A parameter weighs more when it is a more common reason for the process to stall.
Quality signals
- +5Description has no quoted example phrases that should trigger the skill
- +3Output format is not stated: the model decides each time
- -33 of 4 scripts are never mentioned in SKILL.md
- +1No license
- +2Single-language instructions
- +4Description says when NOT to use the skill
- +3Description length 283: enough signal without eating the budget
- +4Structure: 12 headings
- +3Step-by-step instructions: 7 items
- +4Has examples (6 code blocks)
- +4Reference files are cited in the instructions (1 of 1)
Quality base 70; lint remarks subtract, signals add up to 100. Result: 71.