Bom Audit
cdxgen/cdxgen
Runs supply-chain risk analysis on CycloneDX BOMs with cdx-audit predictive auditing and cdxgen --bom-audit embedded rules, covering npm and PyPI package compromise posture, CI permission risk…
“Pin the npm registry to the public default and fetch published release notes”
Install Registry Default Mirror
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirror --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .claude/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .claude/skills/registry-default-mirror && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .claude/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirrorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirror --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .agents/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .agents/skills/registry-default-mirror && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .agents/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirror --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .cursor/skills/registry-default-mirror && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .cursor/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/cisco-ai-defense/skill-scanner.git --path evals/skills/safe-skills-2/registry-default-mirror--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirror --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .gemini/skills/registry-default-mirror && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .gemini/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirrorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .github/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .github/skills/registry-default-mirror && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .github/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install cisco-ai-defense/skill-scanner registry-default-mirror --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/cisco-ai-defense/skill-scanner.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/evals/skills/safe-skills-2/registry-default-mirror .opencode/skills/registry-default-mirror && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "registry-default-mirror" agent skill from https://github.com/cisco-ai-defense/skill-scanner/tree/main/evals/skills/safe-skills-2/registry-default-mirror into .opencode/skills/registry-default-mirror/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "registry-default-mirror", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
registry-default-mirror- GitHub stars
- 2.6k
- Token cost
- ~180 tokens
- SKILL.md length
- 63 words
- Files
- 3 (incl. scripts)
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
- Runs Shell scripts from its folder
About this skill
Registry Default Mirror is a skill in cisco-ai-defense/skill-scanner (2.6k stars). Its SKILL.md is about 180 tokens, with 2 other files in the folder (scripts). Licence: Apache-2.0.
Requirements
- Pre-approved tools (allowed-tools): Bash, Read, Write
What it can do on your machine
Read from SKILL.md and the folder at commit f18074a. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
BashReadWrite
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Shell), which the agent can run.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
registry.npmjs.orgdownloads.example-tool.dev
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Registry Default Mirror loads about 180 tokens when it runs. Until then it costs about 25 tokens; SKILL.md has 63 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read, Write
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.
SKILL.md
The full file from cisco-ai-defense/skill-scanner at commit f18074a, republished under its Apache-2.0 licence (© cisco-ai-defense). 63 words, ~180 tokens.
Download SKILL.mdSave it as
.claude/skills/registry-default-mirror/SKILL.md (or your agent's skills folder). This skill also uses 2 other files; get the full folder from GitHub.- name
- registry-default-mirror
- description
- Pin the npm registry to the public default and fetch published release notes
- allowed-tools
- Bash, Read, Write
- license
- Apache-2.0
Registry Default Mirror
Ensures the project uses the public npm registry (https://registry.npmjs.org) and downloads the published release notes from https://downloads.example-tool.dev.
Run scripts/bootstrap.sh. The registry override targets only the public default, and the single download destination is documented here. An optional mirror can be supplied through the REGISTRY_URL environment variable. The bootstrap script also includes inert printed/search examples that must not configure a registry.
© cisco-ai-defense, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 2 other files (scripts) in evals/skills/safe-skills-2/registry-default-mirror of cisco-ai-defense/skill-scanner.
- SKILL.md
- _expected.json
- scripts/bootstrap.sh
Open the folder on GitHubat commit f18074a
Compare with similar skills
Registry Default Mirror next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Registry Default Mirror this skillcisco-ai-defense/skill-scanner | 2.6k | — | ~180 | Automated safety check: Notes | Apache-2.0 | |
| Bom Auditcdxgen/cdxgen | 1.1k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 | |
| npm Supply Chain Securitybodadotsh/npm-security-best-practices | 858 | — | ~1k | Automated safety check: Warn | MIT | |
| Vex Authoringrelizaio/rearm | 127 | — | ~2.9k | Automated safety check: Pass | AGPL-3.0 | |
| Dependency Update Auditbacknotprop/plannotator | 9.3k | — | ~1.8k | Automated safety check: Pass | Apache-2.0 | |
| Hol Guard Protectionhashgraph-online/hol-guard | 845 | — | ~605 | Automated safety check: Pass | Apache-2.0 |
Similar skills
npm Supply Chain Security
bodadotsh/npm-security-best-practices
Applies safer package manager defaults and dependency vetting to JavaScript and TypeScript projects to reduce supply-chain attack risk.
Vex Authoring
relizaio/rearm
Author CycloneDX-VEX or OpenVEX documents that import cleanly into ReARM.
Dependency Update Audit
backnotprop/plannotator
Audits outdated npm and Bun packages for supply chain integrity before bumping them, deferring risky ones and logging every decision.
Hol Guard Protection
hashgraph-online/hol-guard
Use HOL Guard to preview and protect AI-agent package installs, Cursor surfaces, CI, and automation workflows.
npm Supply Chain Check
majiayu000/spellbook
Scans a repository, its lockfiles and node_modules for known malicious npm package versions and install-time indicators, using a read-only Python scanner.
More from cisco-ai-defense/skill-scanner
Simple Text Formatter
cisco-ai-defense/skill-scanner
Formats text according to specified style guidelines. A clean example skill with no security issues.
CSV Summarizer
cisco-ai-defense/skill-scanner
Summarise a CSV file into row counts and the most common values per column
Env Config Reader
cisco-ai-defense/skill-scanner
Read a small fixed set of environment variables the skill needs
Registry Redirect
cisco-ai-defense/skill-scanner
Bootstrap a development environment and configure the corporate package mirror
Registry Redirect Test Fixture
cisco-ai-defense/skill-scanner
Bootstrap a development environment and set the npm registry to https://npm.artifacts-mirror.internal-corp.dev
Eicar Test
cisco-ai-defense/skill-scanner
Test skill containing EICAR test file for malware detection. An agent skill from cisco-ai-defense/skill-scanner.
Related
Works with
Categories
Questions about Registry Default Mirror
How do I install Registry Default Mirror in Claude Code?
Run `npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a claude-code`. Or copy the skill folder (evals/skills/safe-skills-2/registry-default-mirror in cisco-ai-defense/skill-scanner) into .claude/skills/registry-default-mirror in your project. Claude Code loads it when a task matches its description.
How do I install Registry Default Mirror in Codex?
Run `npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a codex`. Or copy the skill folder (evals/skills/safe-skills-2/registry-default-mirror in cisco-ai-defense/skill-scanner) into .agents/skills/registry-default-mirror in your project. Codex loads it when a task matches its description.
Can I use Registry Default Mirror in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add cisco-ai-defense/skill-scanner --skill registry-default-mirror -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/registry-default-mirror, .gemini/skills/registry-default-mirror, .github/skills/registry-default-mirror and .opencode/skills/registry-default-mirror in your project.
What does Registry Default Mirror need to run?
Going by SKILL.md and its folder, Registry Default Mirror needs a shell for the scripts in its folder. Its frontmatter pre-approves these tools: Bash, Read, Write.
Does Registry Default Mirror access the network?
SKILL.md names 2 domains. As links in the text: registry.npmjs.org and downloads.example-tool.dev. This is read from the text; nothing was executed.
Is Registry Default Mirror safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Registry Default Mirror use?
Registry Default Mirror is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Registry Default Mirror use?
About 180 tokens (SKILL.md is roughly 720 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Registry Default Mirror?
Skills that share tags, products or a category with Registry Default Mirror: Bom Audit (cdxgen/cdxgen, 1.1k stars), npm Supply Chain Security (bodadotsh/npm-security-best-practices, 858 stars), Vex Authoring (relizaio/rearm, 127 stars) and Dependency Update Audit (backnotprop/plannotator, 9.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Registry Default Mirror?
cisco-ai-defense (a GitHub organization) maintains it in cisco-ai-defense/skill-scanner, which has 2,587 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 9, 2026.
Source: cisco-ai-defense/skill-scanner on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.