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Software Security

Category: Security  ·  Sub-category: web-security  ·  Last updated:
tool:k8stype:review
Project CodeGuard-based secure-by-default coding rules (23 rule files spanning injection, authentication/MFA, cryptography, secrets, authorization, sessions, cloud/Kubernetes, IaC, supply chain, MCP, mobile, logging, privacy) for writing and reviewing secure code across 25+ languages. Use when writing, reviewing, or modifying code, handling user input/credentials/cryptographic operations, or configuring cloud infrastructure/CI-CD/containers. Japanese-localized adaptation of cosai-oasis/project-codeguard (CC-BY-4.0). For organizational AI-development security strategy use securing-ai-development; for dynamic authorization model design (ABAC/ReBAC/Cedar) use implementing-dynamic-authorization; for OWASP-oriented code security and penetration testing use securing-code.

About this skill (catalog notes)

Software Security is published as a SKILL.md file in this catalog. The SKILL.md is on the shorter side at about 428 words.

Original author
sumik5
Indexed lastmod
Catalog position
Security · web-security
Indexed related skills
10

How Software Security fits the catalog

Software Security sits in the Security category under the web-security sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

このスキルは、AIコーディングエージェントがセキュアなコードを生成し、一般的な脆弱性を防ぐための包括的なセキュリティガイダンスを提供する。Project CodeGuard（オープンソースかつモデル非依存の、セキュアバイデフォルトの実践をAIコーディングワークフローへ組み込むセキュリティフレームワーク）に基づいている。

What this skill does

Software Security is a community-contributed Claude Code skill in the web-security sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/software-security/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when writing, reviewing, or modifying code, handling user input/credentials/cryptographic operations, or configuring cloud infrastructure/CI-CD/containers. Japanese-localized adaptation of cosai-oasis/project-codeguard (CC-BY-4.

Who uses this skill

The Software Security Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 118,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/software-security
curl -L https://claudskills.com/skills/software-security/SKILL.md \
  -o ~/.claude/skills/software-security/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/software-security/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/software-security/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\software-security\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

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 →

Pro

One-click install via the desktop app

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.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Software Security Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/software-security/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Software Security skill do?
Project CodeGuard-based secure-by-default coding rules (23 rule files spanning injection, authentication/MFA, cryptography, secrets, authorization, sessions, cloud/Kubernetes, IaC, supply chain, MCP, mobile, logging, privacy) for writing and reviewing secure code across 25+ languages. Use when writing, reviewing, or modifying code, handling user input/credentials/cryptographic operations, or configuring cloud infrastructure/CI-CD/containers. Japanese-localized adaptation of cosai-oasis/project-codeguard (CC-BY-4.0). For organizational AI-development security strategy use securing-ai-development; for dynamic authorization model design (ABAC/ReBAC/Cedar) use implementing-dynamic-authorization; for OWASP-oriented code security and penetration testing use securing-code.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Software Security skill?
Use Software Security when your Claude Code task falls under the Security category — specifically in the web security area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Software Security" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Software Security skill fit in?
A Claude Code skill is a 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. Software Security is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
sumik5. (2026). Software Security [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/software-security/
BibTeX
@misc{software-security-2026,
  author    = {sumik5},
  title     = {Software Security [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/software-security/}
}

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More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
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