nokk@r1
CAUTION· install onlyPublisher claims: "Headless browser for AI agents with Chrome's fingerprint that passes Cloudflare challenges." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Nothing executable in the bundle ran; the trace covers the install step only.- Tested
- every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
What this means for the label: Caution here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.
Before you give it your token
- It will ask for
- no credential variables read in the code
- Where it talks to
- no vendor host named in the codeAlso whatwg.org, other.test, a.co, a.com, x.example, example.net, cloudflare.com, host.example, h.example, site.test, cdn.test, google-analytics.com, ip-api.com, a.example, cdn.example, example.co.uk, a.co.uk, b.co.uk, httpbin.org, lemire.me, ibm.com, rust-lang.org — not the publisher's domain; check what for before connecting.
- What the honeypot saw
- no credential files read · no network
- What we could not test
- use of the skill by an agent
Connect it under the guard. Nothing executable in the bundle ran; the trace covers the install step only. The code names no credential variable; the guard pins the network to what the honeypot saw and logs every call.
Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.
Is nokk@r1 safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-14 and scored it 68/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Hidden zero-width characters detected; URL with embedded credentials; URL with embedded credentials. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 1 scenarios · 0 deviationsStatic findings
const IDENT = /^[$_\p{ID_Start}][$_\p{ID_Continue}]*$/u;Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.let p = super::parse_proxy_server("http://user:[email protected]:8080").unwrap();Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.assert_eq!(parse_proxy("http://u:[email protected]:80").expect(":80").port, 80);Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose./// (`document.cookie = …`). The stub has no jar.Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.let _ = client.send(req("GET", "http://192.0.2.1:9/")).await;Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.…ayBuffer":0,"Response.blob":0,"Response.clone":0,"Response.formData":0,"Response.json":0,"Response.text":0,"Response.bytes":0,"Response.textStream":0,"ResizeObserver.disconnect":0,"ResizeObserver.observe":1,"ResizeObserver.unobserve":1,"Re…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.…uest.arrayBuffer", "Request.blob", "Request.bytes", "Request.formData", "Request.json", "Request.text", "Response.arrayBuffer", "Response.blob", "Response.bytes", "Response.formData", "Response.json", "Response.text", "SVGElement.onmouseen…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.let p = parse_proxy("http://user:[email protected]:8080").expect("should parse");Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose./// `http://user:pass@host:port` or `socks5://host:port`. Essential forFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.// The jar the engine actually sends, HttpOnly included — `document.cookie`Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.let _ = client.send(req("GET", "http://192.0.2.1:9/")).await;Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls./// `bm_s*`) is HttpOnly, so `document.cookie` is no substitute.Fix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.// `npx nokk …` / the `nokk` bin — run the embedded binary, passing through argsFix: Pin versions and sources; vendor anything fetched at install time.&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.sudo apt install build-essential cmake clang libclang-dev # BoringSSL needs theseFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.for seq in ["👩❤️💋👨", "👨👩👧👦", "👨👩👦", "🇺🇦", "👍🏽"] {Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.let p = parse_proxy("http://us%40er:p%3Ass%[email protected]:3128").expect("should parse");Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.
What would make this Verified
12 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%- Unclaimed publisher≈ +8 on the totalClaim koloss777: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
- Hidden zero-width characters detected≈ +4 on the totalKeep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
- URL with embedded credentials≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
- document.cookie access≈ +4 on the totalReplace encoded or assembled strings with plain literals and remove undeclared network calls.
- HTTP URL with a raw public IP address≈ +4 on the totalReplace encoded or assembled strings with plain literals and remove undeclared network calls.
- Privileged sudo command≈ +4 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.