Strix Code Vulnerability Scan
usestrix/strix
Runs a Strix white-box security review that reads the source, then exploits what it finds in a sandbox so each reported issue has a proof-of-concept.
Subdomain and DNS enumeration workflow using subfinder, amass, dnsenum, fierce, theharvester, gau, and waybackurls
Install Subdomain Enum
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enum --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .claude/skills && cp -r skills-src/AI/skills/subdomain-enum .claude/skills/subdomain-enum && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .claude/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enumType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enum --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .agents/skills && cp -r skills-src/AI/skills/subdomain-enum .agents/skills/subdomain-enum && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .agents/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enum --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/AI/skills/subdomain-enum .cursor/skills/subdomain-enum && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .cursor/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/CommonHuman-Lab/nyxstrike.git --path AI/skills/subdomain-enum--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enum --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/AI/skills/subdomain-enum .gemini/skills/subdomain-enum && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .gemini/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enumInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .github/skills && cp -r skills-src/AI/skills/subdomain-enum .github/skills/subdomain-enum && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .github/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install CommonHuman-Lab/nyxstrike subdomain-enum --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/CommonHuman-Lab/nyxstrike.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/AI/skills/subdomain-enum .opencode/skills/subdomain-enum && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "subdomain-enum" agent skill from https://github.com/CommonHuman-Lab/nyxstrike/tree/master/AI/skills/subdomain-enum into .opencode/skills/subdomain-enum/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subdomain-enum", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
subdomain-enum- GitHub stars
- 157
- Token cost
- ~858 tokens
- SKILL.md length
- 288 words
- Files
- 1
- Skills in repo
- 5
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Subdomain and DNS enumeration workflow using subfinder, amass, dnsenum, fierce, theharvester, gau, and waybackurls
- Works in 8 steps: Passive subdomain discovery (subfinder) → Active subdomain enumeration (amass) → DNS zone transfer and record enumeration… → …
- Tasks that involve Penetration testing
- SKILL.md covers Workflow, Attack surface map — full…, Tips and NyxStrike Tool Reference
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Subdomain Enum is an agent skill from CommonHuman-Lab/nyxstrike. Subdomain and DNS enumeration workflow using subfinder, amass, dnsenum, fierce, theharvester, gau, and waybackurls
Its SKILL.md is about 860 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Security, covering Penetration testing. The repository describes itself as: AI Powered penetration testing Platform for offensive security research.
When your agent uses it
- Tasks that involve Penetration testing
Example prompts
- “/subdomain-enum”
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Passive subdomain discovery (subfinder)
- Active subdomain enumeration (amass)
- DNS zone transfer and record enumeration (dnsenum)
- DNS reconnaissance (fierce)
- Email, host, and URL harvesting (theharvester)
- Historical URL discovery (gau + waybackurls)
- WHOIS lookup
- HTTP probe discovered subdomains (httpx)
What it can do on your machine
Read from SKILL.md and the folder at commit 3ac7449. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Subdomain Enum loads about 858 tokens when it runs. Until then it costs about 32 tokens; SKILL.md has 288 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 288 words (~858 tokens).
“Subdomain and DNS reconnaissance workflow for NyxStrike. Use this skill when a user wants to enumerate subdomains, discover DNS records, find email addresses, or build a full attack surface map for a domain.”
- name
- subdomain-enum
Files
Just SKILL.md in AI/skills/subdomain-enum of CommonHuman-Lab/nyxstrike.
Open the folder on GitHubat commit 3ac7449
Compare with similar skills
Subdomain Enum next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Subdomain Enum this skillCommonHuman-Lab/nyxstrike | 157 | — | ~858 | Automated safety check: Pass | Custom licence | |
| Strix Code Vulnerability Scanusestrix/strix | 67k | — | ~1.1k | Automated safety check: Pass | Apache-2.0 | |
| Code Audit3stoneBrother/code-audit | 893 | 1 repos | ~2.7k | Automated safety check: Pass | None | |
| Fix Strix Security Findingsusestrix/strix | 67k | — | ~1.5k | Automated safety check: Pass | Apache-2.0 | |
| Metabigor OSINT Reconj3ssie/metabigor | 1.9k | — | ~2.4k | Automated safety check: Pass | MIT | |
| Wooyun Legacytanweai/wooyun-legacy | 1.8k | — | ~1.9k | Automated safety check: Pass | Custom licence |
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Related
Categories
Questions about Subdomain Enum
What does Subdomain Enum do?
Subdomain and DNS enumeration workflow using subfinder, amass, dnsenum, fierce, theharvester, gau, and waybackurls. Subdomain Enum is an agent skill from CommonHuman-Lab/nyxstrike.
When should I use Subdomain Enum?
Subdomain Enum fits situations like: tasks that involve Penetration testing.
How do I install Subdomain Enum in Claude Code?
Run `npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a claude-code`. Or copy the skill folder (AI/skills/subdomain-enum in CommonHuman-Lab/nyxstrike) into .claude/skills/subdomain-enum in your project. Claude Code loads it when a task matches its description.
How do I install Subdomain Enum in Codex?
Run `npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a codex`. Or copy the skill folder (AI/skills/subdomain-enum in CommonHuman-Lab/nyxstrike) into .agents/skills/subdomain-enum in your project. Codex loads it when a task matches its description.
Can I use Subdomain Enum in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add CommonHuman-Lab/nyxstrike --skill subdomain-enum -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/subdomain-enum, .gemini/skills/subdomain-enum, .github/skills/subdomain-enum and .opencode/skills/subdomain-enum in your project.
What does Subdomain Enum need to run?
SKILL.md names no scripts, command-line tools or credentials: Subdomain Enum is instructions for the agent only.
Does Subdomain Enum access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Subdomain Enum safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Subdomain Enum use?
Subdomain Enum has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Subdomain Enum use?
About 858 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Subdomain Enum?
Skills that share tags, products or a category with Subdomain Enum: Strix Code Vulnerability Scan (usestrix/strix, 67k stars), Code Audit (3stoneBrother/code-audit, 893 stars), Fix Strix Security Findings (usestrix/strix, 67k stars) and Metabigor OSINT Recon (j3ssie/metabigor, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Subdomain Enum?
CommonHuman-Lab (a GitHub user) maintains it in CommonHuman-Lab/nyxstrike, which has 157 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 7, 2026.
Source: CommonHuman-Lab/nyxstrike on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.