Claude Code Guide is a reference collection for configuring and using Claude Code, Anthropic’s command-line coding agent. Developers use it to learn commands, skills, agents, MCP, automation, security, integrations, and troubleshooting. Its catalogue add-ons provide many of the documented skills and agents.
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.
npx agentmods add skills/zebbern/claude-code-guide/ssh-penetration-testingnpx skills add zebbern/claude-code-guide --skill ssh-penetration-testinggit clone --depth 1 https://github.com/zebbern/claude-code-guideWrote 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.
[](https://agentmods.dev/skills/zebbern/claude-code-guide/ssh-penetration-testing)<a href="https://agentmods.dev/skills/zebbern/claude-code-guide/ssh-penetration-testing"><img src="https://agentmods.dev/badge/skills/zebbern/claude-code-guide/ssh-penetration-testing.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00063 | $0.03406 |
| Opus 5 | $0.00032 | $0.01703 |
| Sonnet 5 | $0.00013 | $0.00681 |
| Haiku 4.5 | $0.00006 | $0.00341 |
Grade C, and why
ssh-penetration-testing scanned grade C with 4 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 yesterday.
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.
Enumerates the file system for secretsmediumData exfiltration
Searching home directories for .env, .ssh, .aws or credential files is reconnaissance for credential theft.
ls -la ~/.ssh/ Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Asks for rootlowPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
# Check sudo privileges Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.
Reaches for credential filesmediumPrivilege escalation
SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.
~/.ssh/id_rsa 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.
# Web-accessible keys (check with curl/wget) Copies of this mod
2 near-identical copies found in the catalogue:
- ssh-penetration-testing — 97% identical, 9 lines differ
- ssh-penetration-testing — 97% identical, 9 lines differ
How it starts
The opening of the file, as written. The whole thing — 489 lines — stays where its author put it; the contents beside it link to each section on GitHub.
SSH Penetration Testing
Purpose
Conduct comprehensive SSH security assessments including enumeration, credential attacks, vulnerability exploitation, tunneling techniques, and post-exploitation activities. This skill covers the complete methodology for testing SSH service security.
Prerequisites
Required Tools
- Nmap with SSH scripts
- Hydra or Medusa for brute-forcing
- ssh-audit for configuration analysis
- Metasploit Framework
- Python with Paramiko library
Required Knowledge
- SSH protocol fundamentals
- Public/private key authentication
- Port forwarding concepts
- Linux command-line proficiency
Outputs and Deliverables
- SSH Enumeration Report - Versions, algorithms, configurations
- Credential Assessment - Weak passwords, default credentials
- Vulnerability Assessment - Known CVEs, misconfigurations
- Tunnel Documentation - Port forwarding configurations
Core Workflow
Phase 1: SSH Service Discovery
Identify SSH services on target networks:
# Quick SSH port scan
nmap -p 22 192.168.1.0/24 --open
# Common alternate SSH ports
nmap -p 22,2222,22222,2200 192.168.1.100
# Full port scan for SSH
nmap -p- --open 192.168.1.100 | grep -i ssh
# Service version detection
nmap -sV -p 22 192.168.1.100
Phase 2: SSH Enumeration
Gather detailed information about SSH services:
# Banner grabbing
nc 192.168.1.100 22
# Output: SSH-2.0-OpenSSH_8.4p1 Debian-5
# Telnet banner grab
telnet 192.168.1.100 22
# Nmap version detection with scripts
nmap -sV -p 22 --script ssh-hostkey 192.168.1.100
# Enumerate supported algorithms
nmap -p 22 --script ssh2-enum-algos 192.168.1.100
# Get host keys
nmap -p 22 --script ssh-hostkey --script-args ssh_hostkey=full 192.168.1.100
# Check authentication methods
nmap -p 22 --script ssh-auth-methods --script-args="ssh.user=root" 192.168.1.100
Phase 3: SSH Configuration Auditing
Identify weak configurations:
# ssh-audit - comprehensive SSH audit
ssh-audit 192.168.1.100
# ssh-audit with specific port
ssh-audit -p 2222 192.168.1.100
# Output includes:
# - Algorithm recommendations
# - Security vulnerabilities
# - Hardening suggestions
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.
- yesterday First seen · 489 lines · 63 tokens per session scan C 2c51adf87fd4
ssh-penetration-testing is a skill published in the GitHub repository zebbern/claude-code-guide (4,600 stars, last pushed today), licensed MIT. It adds 63 tokens to every session and 3,406 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 4 findings (enumerates the file system for secrets, asks for root, reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
Other skills, from other repositories
cdb-scan
Map this codebase into project memory — a code graph of every symbol and how they connect, plus a written profile of stack, layout, conventions and workflows. Re-run any time to refresh both in place. Use when memory is newly installed on an existing project, or when the project has changed enough that the stored map…
mckinsey-consultant
McKinsey顾问式问题解决系统。从商业问题出发,通过假设驱动的结构化分析方法,生成McKinsey风格研究报告和PPT。融合Problem Solving方法论、MECE原则、Issue Tree拆解、Hypotheses形成、Dummy Page设计、智能数据收集和专业PPT生成能力。.
exam-coach
Quiz and coach the user for the Anthropic Claude certification exams using this repository's blueprints and official exam guides. Use when the user asks to practice, be quizzed, drill a domain, take a mock exam, or prepare for the Associate, Developer, or Architect certifications.
security-claude
Skill "security-claude" from rahozosman/security-claude, covering security architecture & threat modeling intelligence, how this skill is organized (progressive disclosure), 1. pick a mode, 2. core method (applies to every mode) and 3. doing a focused review.
bridger
Coordinate with another Claude Code session over the bridge — discover peers, ask them, answer their questions — INSTEAD of guessing or asking the user. Trigger this the moment the task depends on something another repo's session knows: a dependency/library that changed and this code consumes it, an API or schema…
run-tests
Run the pytest suite, report pass/fail counts and coverage, and identify untested code. Use when the user asks to run tests, check test coverage, or verify that changes didn't break anything.