passive-recon

passive-recon is a skill for Claude Code, Codex from wgpsec/AboutSecurity. It costs 85 tokens per session (1,043 once invoked), scanned A, original, no licence file.

A guide to passive OSINT reconnaissance: collecting publicly available information about exposed assets without directly contacting the target. OSINT means intelligence gathered from open sources, while asset discovery finds domains, services, and other internet-facing systems.

In plain words
What is it for?
Use it to discover exposed assets with services such as FOFA, Quake, and Hunter before formal penetration testing.
Why use it?
It supports early security research while reducing direct interaction with the target. It also helps compare results from multiple search engines for a broader view.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it to discover exposed assets with services such as FOFA, Quake, and Hunter before formal penetration testing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/wgpsec/aboutsecurity/passive-recon
Install

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.

Any agent
npx skills add wgpsec/AboutSecurity --skill passive-recon
Clone the repo
git clone --depth 1 https://github.com/wgpsec/AboutSecurity

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for passive-recon

README.md
[![agentmods](https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/passive-recon/github.svg)](https://agentmods.dev/skills/wgpsec/aboutsecurity/passive-recon)
Your own site
<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/passive-recon"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/passive-recon/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for passive-recon

Your own site · 80×15
<a href="https://agentmods.dev/skills/wgpsec/aboutsecurity/passive-recon"><img src="https://agentmods.dev/badge/skills/wgpsec/aboutsecurity/passive-recon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 85 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,043 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00085 $0.01043
Opus 5 $0.00043 $0.00522
Sonnet 5 $0.00017 $0.00209
Haiku 4.5 $0.00009 $0.00104

Measured 5d ago against content hash cb36c562721d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

passive-recon scanned grade A with 1 finding 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 5d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

通过 `http_request` 或 `curl` 查询 FOFA API(`https://fofa.info/api/v1/search/all?...`)— 国内最大的网络空间测绘引擎,适合发现国内资产。
skills/recon/passive-recon/SKILL.md · 75 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 5d ago First seen · 75 lines · 85 tokens per session scan A cb36c562721d

Subscribe to this mod's changes

passive-recon is a skill published in the GitHub repository wgpsec/AboutSecurity (1,725 stars, last pushed 9d ago), with no licence file. It adds 85 tokens to every session and 1,043 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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