vapt-recon

vapt-recon is a skill for Claude Code, Codex from bhuvangupta/vapt-claude. It costs 0 tokens per session (1,488 once invoked), scanned B, original, MIT.

A reconnaissance and open-source intelligence guide for collecting publicly available information about a website or domain. It covers DNS records, subdomains, certificate logs, hosting details, and email-security records.

In plain words
What is it for?
Use it during a VAPT audit or standalone recon task to enumerate domains and subdomains, inspect DNS, identify mail servers, and review SPF, DKIM, and DMARC records.
Why use it?
It gathers an initial map of a target before deeper security testing, revealing systems and services that may otherwise be overlooked.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it during a VAPT audit or standalone recon task to enumerate domains and subdomains, inspect DNS, identify mail servers, and review SPF, DKIM, and DMARC records.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/bhuvangupta/vapt-claude/vapt-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 bhuvangupta/vapt-claude --skill vapt-recon
Clone the repo
git clone --depth 1 https://github.com/bhuvangupta/vapt-claude

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 vapt-recon

README.md
[![agentmods](https://agentmods.dev/badge/skills/bhuvangupta/vapt-claude/vapt-recon/github.svg)](https://agentmods.dev/skills/bhuvangupta/vapt-claude/vapt-recon)
Your own site
<a href="https://agentmods.dev/skills/bhuvangupta/vapt-claude/vapt-recon"><img src="https://agentmods.dev/badge/skills/bhuvangupta/vapt-claude/vapt-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 vapt-recon

Your own site · 80×15
<a href="https://agentmods.dev/skills/bhuvangupta/vapt-claude/vapt-recon"><img src="https://agentmods.dev/badge/skills/bhuvangupta/vapt-claude/vapt-recon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,488 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00000 $0.01488
Opus 5 $0.00000 $0.00744
Sonnet 5 $0.00000 $0.00298
Haiku 4.5 $0.00000 $0.00149

Measured 10d ago against content hash 2403ca4677a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

vapt-recon scanned grade B with 2 findings 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 10d 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -s "https://crt.sh/?q=%25.<domain>&output=json" | python3 -c "import sys,json; [print(x['name_value']) for x in json.load(sys.stdin)]" | sort -u

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

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

curl -s "https://crt.sh/?q=%25.<domain>&output=json" | python3 -c "import sys,json; [print(x['name_value']) for x in json.load(sys.stdin)]" | sort -u
skills/vapt-recon/SKILL.md · 210 lines

How it starts

The opening of the file, as written. The whole thing — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Recon & OSINT

When Invoked

The user runs /vapt recon <url> or this skill is triggered as part of Wave 1 during /vapt audit.

Phase 1: Passive Reconnaissance

1.1 DNS Enumeration

Run DNS lookups for the target domain:

# A, AAAA, MX, TXT, NS, SOA, CNAME records
dig +short <domain> A
dig +short <domain> AAAA
dig +short <domain> MX
dig +short <domain> TXT
dig +short <domain> NS
dig +short <domain> SOA
dig +short <domain> CNAME

Look for:

  • IP addresses and hosting provider
  • Mail servers (potential phishing targets)
  • TXT records (SPF, DKIM, DMARC — email security posture)
  • NS records (DNS hosting, potential zone transfer)

1.2 Subdomain Enumeration

If subfinder is installed:

subfinder -d <domain> -silent

If amass is installed:

amass enum -passive -d <domain>

Fallback (always run):

  • Query crt.sh for certificate transparency logs:
    curl -s "https://crt.sh/?q=%25.<domain>&output=json" | python3 -c "import sys,json; [print(x['name_value']) for x in json.load(sys.stdin)]" | sort -u
    
  • Check common subdomains via DNS: www, mail, api, admin, staging, dev, test, app, portal, vpn, cdn, static, docs, blog

1.3 Technology Fingerprinting

If whatweb is installed:

whatweb -q <url>

If wafw00f is installed:

wafw00f <url>

Fallback (always run):

  • Fetch homepage headers and body with curl:
    curl -sIL <url>
    curl -sL <url> | head -200
    
  • Extract from response headers: Server, X-Powered-By, X-Generator
  • Extract from HTML: meta generator tag, script/link src patterns, CSS class naming conventions
  • Identify: Web server (nginx/Apache/IIS), language (PHP/Python/Node/Java/Ruby), framework (Laravel/Django/Express/Spring/Rails), CMS (WordPress/Drupal/Joomla), CDN (Cloudflare/AWS CloudFront/Akamai), WAF presence

1.4 WHOIS Analysis

whois <domain>

Extract:

  • Registrar and registration date
  • Expiration date (expired domains = risk)
  • Registrant organization (privacy protection or exposed?)
  • Name servers

Read the full file on GitHub · 210 lines

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. 10d ago First seen · 210 lines · 0 tokens per session scan B 2403ca4677a7

Subscribe to this mod's changes

vapt-recon is a skill published in the GitHub repository bhuvangupta/vapt-claude (1 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,488 tokens. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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