Use this skill for C/C++ work that calls the OpenSSL library API (or an OpenSSL-compatible library such as LibreSSL or BoringSSL) directly: TLS server/client setup, handshakes, certificate and key handling, peer verification, the EVP cryptographic interfaces, random generation, the error queue, BIO chains, and the object lifecycle/reference-count rules that make OpenSSL safe or unsafe to use. This is about the C API linked into an application, not the openssl(1) command-line tool.
Cpp Openssl is a community-contributed Claude Code skill in the engineering-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cpp-openssl/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when: designing, implementing, reviewing, or debugging C/C++ that calls the OpenSSL (or LibreSSL/BoringSSL) library API directly: SSL_CTX/SSL setup, TLS handshakes, certificate and key loading, peer and hostname verification, ALPN/SNI, the EVP cipher/digest/PKEY interfaces, AEAD, key derivation, RAND, the error queue, BIO chains, object lifetime and refcounts, and 1.1.
The Cpp Openssl Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 213,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
mkdir -p ~/.claude/skills/cpp-openssl curl -L https://claudskills.com/skills/cpp-openssl/SKILL.md \ -o ~/.claude/skills/cpp-openssl/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/cpp-openssl/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/cpp-openssl/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cpp-openssl\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
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SKILL.md from the source repository to ~/.claude/skills/cpp-openssl/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Cpp Openssl is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at /learn/what-is-a-claude-skill/.If you reference this skill in a blog post, paper, or documentation, you can cite it as:
@misc{cpp-openssl-2026,
author = {sjinks},
title = {Cpp Openssl [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/cpp-openssl/}
}Grade A · scanned 2026-11-01 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
Browse all Engineering skills in the ClaudSkills registry, or explore these other picks from the same category:
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SKILL.md files, not affiliated with, endorsed by, or sponsored by Anthropic.