Agent skill

Subfinder Recon

使用 subfinder 进行被动子域名枚举。当需要发现目标域名的子域名、扩展攻击面时使用。subfinder 是 ProjectDiscovery 出品的被动子域名发现工具，聚合 Shodan、Censys、SecurityTrails、VirusTotal 等多数据源，快速且隐蔽。任何涉及子域名枚举、攻击面发现、被动信息收集的场景都应使用此技能

No licenceAuto-check passedSecurity

Install Subfinder Recon

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/tool/subfinder-recon .claude/skills/subfinder-recon && rm -rf skills-src

Use ~/.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/

Paste into Claude Code

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .claude/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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

$skill-installer install https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon

Type 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.

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/tool/subfinder-recon .agents/skills/subfinder-recon && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .agents/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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.

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/tool/subfinder-recon .cursor/skills/subfinder-recon && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .cursor/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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

$ gemini skills install https://github.com/wgpsec/AboutSecurity.git --path skills/tool/subfinder-recon

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/tool/subfinder-recon .gemini/skills/subfinder-recon && rm -rf skills-src

Use ~/.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/

Paste into Gemini CLI

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .gemini/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon

Installs 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).

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/tool/subfinder-recon .github/skills/subfinder-recon && rm -rf skills-src

Use ~/.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/

Paste into GitHub Copilot

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .github/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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.

skills CLI

$ npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install wgpsec/AboutSecurity subfinder-recon --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/wgpsec/AboutSecurity.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/tool/subfinder-recon .opencode/skills/subfinder-recon && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "subfinder-recon" agent skill from https://github.com/wgpsec/AboutSecurity/tree/master/skills/tool/subfinder-recon into .opencode/skills/subfinder-recon/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "subfinder-recon", 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: subfinder-recon
GitHub stars: 1.8k
Token cost: ~500 tokens
SKILL.md length: 61 words
Files: 1
Skills in repo: 64
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: None found

At a glance

Works in 4 steps: 基本使用 → 数据源配置 → 管道集成 → …
Tasks that involve OSINT
SKILL.md covers Phase 1: 基本使用, Phase 2: 数据源配置, Phase 3: 管道集成 and Phase 4: 高级选项, plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Subfinder Recon is an agent skill from wgpsec/AboutSecurity. 使用 subfinder 进行被动子域名枚举。当需要发现目标域名的子域名、扩展攻击面时使用。subfinder 是 ProjectDiscovery 出品的被动子域名发现工具，聚合 Shodan、Censys、SecurityTrails、VirusTotal 等多数据源，快速且隐蔽。任何涉及子域名枚举、攻击面发现、被动信息收集的场景都应使用此技能

Its SKILL.md is about 500 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 OSINT. The repository describes itself as: Everything for pentest. | 渗透测试知识库，以 AI Agent 可执行的格式沉淀安全方法论。

When your agent uses it

Tasks that involve OSINT

Example prompts

“/subfinder-recon”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

基本使用
数据源配置
管道集成
高级选项

What it can do on your machine

Read from SKILL.md and the folder at commit 914ffb5. 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 (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
- github.com
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

Subfinder Recon loads about 500 tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 61 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~48
When it runs · the whole SKILL.md, loaded when a task matches: ~500

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 61 words (~500 tokens).

“subfinder 是 ProjectDiscovery 出品的被动子域名发现工具。核心优势：纯被动（不产生目标流量）+ 多数据源聚合（40+ 源）+ 管道友好。”

— opening of SKILL.md by wgpsec

name: subfinder-recon
metadata.tags: subfinder,subdomain,recon,子域名,被动枚举,信息收集,攻击面,projectdiscovery
metadata.category: tool

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/tool/subfinder-recon of wgpsec/AboutSecurity.

Open the folder on GitHubat commit 914ffb5

Compare with similar skills

Subfinder Recon 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.

Subfinder Recon compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Subfinder Recon this skillwgpsec/AboutSecurity	1.8k	—	~500	Automated safety check: Pass	None	yesterday
Metabigor OSINT Reconj3ssie/metabigor	1.9k	—	~2.4k	Automated safety check: Pass	MIT	2 mo ago
Ctf Osintljagiello/ctf-skills	3.4k	1 repos	~2.3k	Automated safety check: Notes	MIT	27 days ago
ShadowBroker Intelligence ClientBigBodyCobain/Shadowbroker	11k	—	~8.9k	Automated safety check: Warn	AGPL-3.0	today
Awesome Osint Operatorshoyann/RZK-The-Hunter	141	—	~4.8k	Automated safety check: Pass	CC-BY-SA-4.0	2 days ago
Run Claude Osintelementalsouls/Claude-OSINT	2.8k	—	~1.2k	Automated safety check: Pass	MIT	yesterday

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Aboutsecurity Content Ingestion
wgpsec/AboutSecurity
A skill your agent uses whenever the user asks to add, absorb, migrate, port, update, merge, compare, or extract security knowledge into the AboutSecurity repository from any external resource such…
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Ad Persistence
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AD 域环境持久化技术。当已获取域管/本地管理员权限、需要建立持久访问以确保重启或密码更改后仍能回到目标环境时使用。覆盖主机级持久化（计划任务/注册表Run/COM劫持/WMI事件订阅/Windows服务/启动文件夹）、域级持久化（Golden Ticket/Silver Ticket/Skeleton…
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Apt Emulation
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APT 模拟与情报驱动红队方法论。基于已知 APT 组织的 TTP（MITRE ATT&CK）设计红队行动计划。当需要模拟特定威胁组织、设计高仿真攻击演练、或根据威胁情报制定攻击策略时使用
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Questions about Subfinder Recon

What does Subfinder Recon do?

When should I use Subfinder Recon?

Subfinder Recon fits situations like: tasks that involve OSINT.

How do I install Subfinder Recon in Claude Code?

Run `npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a claude-code`. Or copy the skill folder (skills/tool/subfinder-recon in wgpsec/AboutSecurity) into .claude/skills/subfinder-recon in your project. Claude Code loads it when a task matches its description.

How do I install Subfinder Recon in Codex?

Run `npx skills add wgpsec/AboutSecurity --skill subfinder-recon -a codex`. Or copy the skill folder (skills/tool/subfinder-recon in wgpsec/AboutSecurity) into .agents/skills/subfinder-recon in your project. Codex loads it when a task matches its description.

Can I use Subfinder Recon 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 wgpsec/AboutSecurity --skill subfinder-recon -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/subfinder-recon, .gemini/skills/subfinder-recon, .github/skills/subfinder-recon and .opencode/skills/subfinder-recon in your project.

What does Subfinder Recon need to run?

SKILL.md names no scripts, command-line tools or credentials: Subfinder Recon is instructions for the agent only.

Does Subfinder Recon access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Subfinder Recon 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 Subfinder Recon use?

No licence was found for Subfinder Recon or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Subfinder Recon use?

About 500 tokens (SKILL.md is roughly 2k 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 Subfinder Recon?

Skills that share tags, products or a category with Subfinder Recon: Metabigor OSINT Recon (j3ssie/metabigor, 1.9k stars), Ctf Osint (ljagiello/ctf-skills, 3.4k stars), ShadowBroker Intelligence Client (BigBodyCobain/Shadowbroker, 11k stars) and Awesome Osint Operator (shoyann/RZK-The-Hunter, 141 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Subfinder Recon?

wgpsec (a GitHub organization) maintains it in wgpsec/AboutSecurity, which has 1,778 GitHub stars. The repository holds 64 skills in this directory. The repository was last updated on October 10, 2026.

Source: wgpsec/AboutSecurity on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Subfinder Recon

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from wgpsec/AboutSecurity

Related

Questions about Subfinder Recon