web-recon

web-recon is a skill for Claude Code from MingyiSecLab/Mingyi-Atlas. It costs 35 tokens per session (883 once invoked), scanned A, original, Apache-2.0.

A hub for investigating a web application from the outside. It links separate guides for finding paths, APIs, content-management systems, firewalls, login mechanisms, and cookie-dependent behavior.

In plain words
What is it for?
Use it to map directories and virtual hosts, extract endpoints from JavaScript, enumerate APIs, identify WordPress or other CMS software, detect web firewalls, and inspect authentication cookies.
Why use it?
It organizes the early investigation of an unfamiliar web application and points to the relevant follow-up checks.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to map directories and virtual hosts, extract endpoints from JavaScript, enumerate APIs, identify WordPress or other CMS software, detect web firewalls, and inspect authentication cookies.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/web-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 MingyiSecLab/Mingyi-Atlas --skill web-recon
Clone the repo
git clone --depth 1 https://github.com/MingyiSecLab/Mingyi-Atlas

Made for: Claude Code.

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 web-recon

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/web-recon"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/web-recon.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 883 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.
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 $0.00035 $0.00883
Opus 5 $0.00017 $0.00441
Sonnet 5 $0.00007 $0.00177
Haiku 4.5 $0.00003 $0.00088

Measured 8d ago against content hash 0562a988c06a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

web-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 8d 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.

curl -sS "$URL" -o /tmp/probe.html -w '%{http_code}\n'
src/skills/standard/recon/web-recon/SKILL.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Web Application Reconnaissance — Hub

Sub-skills under this directory:

Sub-skill Path When to load
Discovery load_skill("/skills/standard/recon/web-recon/discovery/SKILL.md") directory/file fuzzing, vhost, JS analysis
API enumeration load_skill("/skills/standard/recon/web-recon/api-enumeration/SKILL.md") REST/GraphQL/parameter fuzzing
CMS scanning load_skill("/skills/standard/recon/web-recon/cms-scanning/SKILL.md") WordPress/Joomla/Drupal detected
WAF detection load_skill("/skills/standard/recon/web-recon/waf-detection/SKILL.md") proxy/CDN suspected
Auth mapping load_skill("/skills/standard/recon/web-recon/auth-mapping/SKILL.md") login flow analysis
Cookie audit load_skill("/skills/standard/recon/web-recon/cookie-audit/SKILL.md") sink behind session, race-condition recon

For overall recon workflow, scope rules, and handoff format, see load_skill("/skills/standard/recon/workflow.md") (root workflow).

Tag-Driven Fast Paths

When the orchestrator passes challenge tags, skip straight to the matching sub-skill:

Tag First action Sub-skill to load
sqli Fire a single error-triggering payload on every form/param /skills/standard/exploit/web/sqli/SKILL.md recon section
ssti Probe every reflection point with {{7*7}} /skills/standard/exploit/web/ssti-exploitation/SKILL.md recon section
lfi Path-traversal probe on every file/path param discovery.md
idor Enumerate object IDs on every user-data endpoint api-enumeration.md
auth Map the full auth flow before other recon auth-mapping.md

HTTP Request Deduplication Pattern

When iterating parameters (IDs, pages, paths), always deduplicate via recon/probed.txt to avoid re-probing the same URLs after context summarization:

URL="http://<TARGET>/api/resource/$ID"
if grep -Fxq "$URL" recon/probed.txt 2>/dev/null; then
  echo "SKIP: $URL"
else
  echo "$URL" >> recon/probed.txt
  curl -sS "$URL" -o /tmp/probe.html -w '%{http_code}\n'
  head -10 /tmp/probe.html
fi

Read the full file on GitHub · 70 lines

Files

What ships with it

6 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. 8d ago First seen · 70 lines · 35 tokens per session scan A 0562a988c06a

Subscribe to this mod's changes

web-recon is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 35 tokens to every session and 883 once invoked, about $0.0002 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.