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raven-zero-day-fixing

Category: General  ·  Sub-category: general-misc  ·  Last updated:
Generate, verify, and apply patches for a confirmed 0-day finding. Use when the user says "fix this 0-day", "patch this CVE", "generate the fix", "virtual-patch this", "rollback unsafe change", "apply remediation", or hands over a confirmed root cause from `raven-zero-day-investigator`. Every patch terminates at a tool oracle (𝒯) — static verifier, test suite, formal check, or restore primitive — never raw LLM speculation, and every fix is tagged with a D3FEND Harden / Restore technique id.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

This skill is Raven's remediation layer. It turns a confirmed root cause into an applied patch or a verified rollback. It does NOT investigate (use raven-zero-day-investigator) and it does NOT decide policy (use raven-zero-day-auto-prevent). Every patch passes through the approval gate and at least one verifier oracle before it is applied.

What this skill does

raven-zero-day-fixing is a community-contributed Claude Code skill in the general-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/zero-day-fixing/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when the user says "fix this 0-day", "patch this CVE", "generate the fix", "virtual-patch this", "rollback unsafe change", "apply remediation", or hands over a confirmed root cause from `raven-zero-day-investigator`. Every patch terminates at a tool oracle (𝒯) — static verifier, test suite, formal check, or restore primitive — never raw LLM speculation, and every fix is tagged with a D3FEND Harden / Restore technique id.

Who uses this skill

The raven-zero-day-fixing Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ 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/zero-day-fixing
curl -L https://claudskills.com/skills/zero-day-fixing/SKILL.md \
  -o ~/.claude/skills/zero-day-fixing/SKILL.md

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

Skills live at ~/.claude/skills/zero-day-fixing/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\zero-day-fixing\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 raven-zero-day-fixing Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/zero-day-fixing/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the raven-zero-day-fixing skill do?
Generate, verify, and apply patches for a confirmed 0-day finding. Use when the user says "fix this 0-day", "patch this CVE", "generate the fix", "virtual-patch this", "rollback unsafe change", "apply remediation", or hands over a confirmed root cause from `raven-zero-day-investigator`. Every patch terminates at a tool oracle (𝒯) — static verifier, test suite, formal check, or restore primitive — never raw LLM speculation, and every fix is tagged with a D3FEND Harden / Restore technique id.
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 raven-zero-day-fixing skill?
Use raven-zero-day-fixing when your Claude Code task falls under the General category — specifically in the general misc 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 raven-zero-day-fixing" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the raven-zero-day-fixing 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. raven-zero-day-fixing is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General 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
daemon-blockint-tech. (2026). raven-zero-day-fixing [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/zero-day-fixing/
BibTeX
@misc{zero-day-fixing-2026,
  author    = {daemon-blockint-tech},
  title     = {raven-zero-day-fixing [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/zero-day-fixing/}
}

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Security scan

Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.

The scan flagged 1 of 10 categories (filesystem), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.

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