nuclei

nuclei is a skill for Claude Code from MingyiSecLab/Mingyi-Atlas. It costs 42 tokens per session (6,796 once invoked), scanned A, original, Apache-2.0.

A command-line vulnerability scanner that uses YAML templates to check websites, networks, and other services for security weaknesses. It supports many network protocols and can run in development pipelines.

In plain words
What is it for?
Use it to scan one or many targets, run custom or community templates, filter scans, control request rates, and send results to supported services.
Why use it?
It helps automate security checks and lets teams describe repeatable detection tests instead of checking every issue manually.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to scan one or many targets, run custom or community templates, filter scans, control request rates, and send results to supported services.

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Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/nuclei
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 nuclei
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 nuclei

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/nuclei"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/nuclei.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 42 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 6,796 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 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 $0.00042 $0.06796
Opus 5 $0.00021 $0.03398
Sonnet 5 $0.00008 $0.01359
Haiku 4.5 $0.00004 $0.00680

Measured 11d ago against content hash 0effe378858a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

nuclei scanned grade A with 0 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 11d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

src/skills/shared/tool-params/nuclei/SKILL.md · 560 lines

How it starts

The opening of the file, as written. The whole thing — 560 lines — stays where its author put it; the contents beside it link to each section on GitHub.

nuclei

Nuclei is a modern, high-performance vulnerability scanner that uses simple YAML-based templates. It helps design custom vulnerability detection scenarios that mimic real-world conditions, reducing false positives by verifying vulnerabilities with realistic steps.

Use this reference when constructing or reviewing nuclei commands. The flags below are expanded from nuclei -h.

Capabilities

  • Simple YAML format for creating and customizing vulnerability templates.
  • Community-contributed templates for trending vulnerabilities.
  • Real-world verification flows to reduce false positives.
  • Ultra-fast parallel scan processing and request clustering.
  • CI/CD integration for vulnerability detection and regression testing.
  • Multiple protocol support, including TCP, DNS, HTTP, SSL, WHOIS, JavaScript, Code, and more.
  • Integrations with Jira, Splunk, GitHub, Elastic, GitLab, ProjectDiscovery Cloud, APIs, and webhooks.

Table of Contents

  • Get Started
  • Installation
  • Command Line Flags
  • Common Command Combinations
  • Single Target Scan
  • Scanning Multiple Targets
  • Network Scan
  • Scanning With a Custom Template
  • Connect Nuclei to ProjectDiscovery
  • Nuclei Templates and Community
  • Template Use Cases

Get Started

Install Nuclei locally for CLI scanning, or use the ProjectDiscovery cloud tier to store and visualize findings, manage templates, access the latest nuclei templates, and discover/store targets.

Important notes:

  • Nuclei is in active development. Review release changelogs before updating because breaking changes can occur.
  • Nuclei is primarily built as a standalone CLI tool. Running it as a service can introduce security risks and should be done with additional controls.
  • Pro and Enterprise editions are available for teams that need large-scale scans, cloud integrations, Jira/Slack/Linear/API/webhook workflows, executive and compliance reporting, SAML SSO, SOC 2 compliance, regional hosting, and shared workspaces.

Installation

Nuclei requires Go >= 1.24.2 for source installation:

Read the full file on GitHub · 560 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. 11d ago First seen · 560 lines · 42 tokens per session scan A 0effe378858a

Subscribe to this mod's changes

nuclei is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 42 tokens to every session and 6,796 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.