skill CX Codex

email-security-auditor-cpp — Claude Code skill: setup & use

Q: How to install email-security-auditor-cpp in Claude Code?

Run `npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a claude-code` in your terminal.

Q: Which dependencies are required before building?

You need a C++17 compiler and OpenSSL headers (`libssl-dev` on Debian/Ubuntu or `openssl-devel` on Fedora). Without OpenSSL, the linker fails to resolve cryptographic symbols.

Validates email credentials and audits inbox authentication via SMTP and IMAP using C++. Built for authorized security testing and credential stuffing assessments.

Install into Claude Code · Skills CLI (Vercel) All methods and platforms ↓

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a claude-code

Open on GitHub

What email-security-auditor-cpp does

This skill provides a C++17 utility for evaluating mail server authentication defenses. It tests credential pairs by connecting over TLS on port 587 for SMTP or SSL on port 993 for IMAP. For providers like Gmail or Outlook, the tool automatically detects mail host domains without manual configuration.

Verification runs concurrently with std::thread. Parallel threads process entries from text files without blocking the main loop. The program writes results into separate files for valid and failed attempts, then generates a summary audit report.

Building the binary locally requires libssl-dev or the platform equivalent of OpenSSL, without which compilation fails at link time.

What it helps with

audit email account credentials through SMTP and IMAP protocols
evaluate mailbox resistance against credential stuffing attacks
execute concurrent multi-threaded account validation from a file
export segregated output lists for valid and rejected credentials

Example prompts for the agent

Compile the email auditor executable using CMake and OpenSSL
Run an IMAP authentication audit on credentials.txt with 10 parallel threads
Configure an SMTP credential check with a 30 second connection timeout

How to install email-security-auditor-cpp

1Skills CLI (Vercel)

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a claude-code

2Manually: put the files in place

~/.claude/skills/email-security-auditor-cpp/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/email-security-auditor-cpp/

1Skills CLI (Vercel)

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a codex

2Manually: put the files in place

.agents/skills/email-security-auditor-cpp/SKILL.md

For all projects use ~/.agents/skills/

1Skills CLI (Vercel)

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a cursor

2Manually: put the files in place

.cursor/skills/email-security-auditor-cpp/SKILL.md

Cursor also reads .agents/skills/ and .claude/skills/

1GitHub CLI

gh skill install reason-machines/security-skills email-security-auditor-cpp

2Manually: put the files in place

.github/skills/email-security-auditor-cpp/SKILL.md

1Skills CLI (Vercel)

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a gemini-cli

2Platform CLI

gemini skills install https://github.com/reason-machines/security-skills --path skills/email-security-auditor-cpp

Manually: put the files in place

.devin/skills/email-security-auditor-cpp/SKILL.md

The legacy .windsurf/skills/ path still works

Skills CLI (Vercel)

npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a opencode

Step by step, with commands for each platform: How to install skills in Claude Code: five ways

Questions about email-security-auditor-cpp

How to install email-security-auditor-cpp in Claude Code?

Run npx skills add reason-machines/security-skills --skill email-security-auditor-cpp -a claude-code in your terminal.

What does email-security-auditor-cpp do?

It provides a C++ utility to audit email security across SMTP and IMAP servers. The tool checks account lists concurrently and separates valid logins into dedicated output files.

Which dependencies are required before building?

You need a C++17 compiler and OpenSSL headers (libssl-dev on Debian/Ubuntu or openssl-devel on Fedora). Without OpenSSL, the linker fails to resolve cryptographic symbols.

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