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Scan agent skills for security issues. An agent skill from getsentry/skills.
Agent skill
Performing Supply Chain Attack Simulation
Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries…
Install Performing Supply Chain Attack Simulation
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulation --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/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .claude/skills/performing-supply-chain-attack-simulation && 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 "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .claude/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulationType 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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .agents/skills/performing-supply-chain-attack-simulation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .agents/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .cursor/skills/performing-supply-chain-attack-simulation && 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 "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .cursor/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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/mukul975/Anthropic-Cybersecurity-Skills.git --path skills/performing-supply-chain-attack-simulation--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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .gemini/skills/performing-supply-chain-attack-simulation && 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 "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .gemini/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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 mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulationInstalls 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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .github/skills/performing-supply-chain-attack-simulation && 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 "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .github/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills performing-supply-chain-attack-simulation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/performing-supply-chain-attack-simulation .opencode/skills/performing-supply-chain-attack-simulation && 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 "performing-supply-chain-attack-simulation" agent skill from https://github.com/mukul975/Anthropic-Cybersecurity-Skills/tree/main/skills/performing-supply-chain-attack-simulation into .opencode/skills/performing-supply-chain-attack-simulation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "performing-supply-chain-attack-simulation", 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
performing-supply-chain-attack-simulation- GitHub stars
- 34k
- Token cost
- ~716 tokens
- SKILL.md length
- 256 words
- Files
- 4 (incl. scripts, references)
- Skills in repo
- 637
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries…
- Works in 5 steps: Typosquatting — compare package names… → Dependency confusion — check if internal… → Hash verification — download packages… → …
- Auditing a projects dependencies for malicious
- SKILL.md covers Overview, When to Use, Prerequisites and Key Detection Areas, plus 1 more section
- Runs Python scripts from its folder
What it does
Performing Supply Chain Attack Simulation is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries, SHA-256 package hash verification, and known-CVE scanning with pip-audit. Use when auditing a project's dependencies for malicious or confused packages, or when assessing package-registry supply-chain risk.
Its SKILL.md is about 720 tokens, which your agent loads only when the skill is triggered. The skill folder holds 5 other files, including scripts and reference files (for example `references/api-reference.md` and `scripts/agent.py`).
It sits in Security, covering Supply chain security. The repository describes itself as: 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io…. The licence is Apache-2.0.
When your agent uses it
- Auditing a projects dependencies for malicious
- Confused packages
- Assessing package-registry supply-chain risk
Example prompts
- “Use the performing-supply-chain-attack-simulation skill to simulate and detects software supply chain attacks: typosquatting detection via…”
- “/performing-supply-chain-attack-simulation”
Requirements
- Python 3
Workflow steps
5 steps, taken from the first numbered list in SKILL.md.
- Typosquatting — compare package names against top PyPI packages using edit distance thresholds
- Dependency confusion — check if internal package names exist on public PyPI with higher version numbers
- Hash verification — download packages and verify SHA-256 digests match published hashes
- Vulnerability scanning — audit installed packages against OSV and PyPA advisory databases
- Metadata anomalies — flag packages with suspicious author emails, missing homepages, or very recent first upload dates
What it can do on your machine
Read from SKILL.md and the folder at commit 54a7988. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (Python), 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):
pypi.org
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
Performing Supply Chain Attack Simulation loads about 716 tokens when it runs, and up to ~1.4k if it reads all its reference files. Until then it costs about 111 tokens; SKILL.md has 256 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 passed
The automated check found no risky patterns in SKILL.md.
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 mukul975/Anthropic-Cybersecurity-Skills at commit 54a7988, republished under its Apache-2.0 licence (© mukul975). 256 words, ~716 tokens.
Download SKILL.mdSave it as
.claude/skills/performing-supply-chain-attack-simulation/SKILL.md (or your agent's skills folder). This skill also uses 3 other files; get the full folder from GitHub.- name
- performing-supply-chain-attack-simulation
- description
- Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries, SHA-256 package hash verification, and known-CVE scanning with pip-audit. Use when auditing a project's dependencies for malicious or confused packages, or when assessing package-registry supply-chain risk.
- domain
- cybersecurity
- subdomain
- application-security
- tags
- supply-chain, typosquatting, dependency-confusion, package-verification, pip-audit, PyPI, software-composition-analysis
- version
- 1.0
- author
- mahipal
- license
- Apache-2.0
- nist_csf
- PR.PS-01, PR.PS-04, ID.RA-01, PR.DS-10
- mitre_attack
- T1078, T1190, T1059, T1195, T1554
Performing Supply Chain Attack Simulation
Overview
Software supply chain attacks exploit trust in package registries through typosquatting (registering names similar to popular packages), dependency confusion (publishing higher-version public packages matching private names), and compromised package distribution. This skill detects these attack vectors by computing Levenshtein distance between package names and popular PyPI packages, verifying package integrity via SHA-256 hash comparison, scanning for known CVEs with pip-audit, and testing dependency resolution order for confusion vulnerabilities.
When to Use
- When conducting security assessments that involve performing supply chain attack simulation
- When following incident response procedures for related security events
- When performing scheduled security testing or auditing activities
- When validating security controls through hands-on testing
Prerequisites
- Python 3.9+ with
pip-audit,Levenshtein,requests - Access to PyPI JSON API (https://pypi.org/pypi/{package}/json)
- Network access for package metadata retrieval
Legal Notice: This skill is for authorized security testing and educational purposes only. Unauthorized use against systems you do not own or have written permission to test is illegal and may violate computer fraud laws.
Key Detection Areas
- Typosquatting — compare package names against top PyPI packages using edit distance thresholds
- Dependency confusion — check if internal package names exist on public PyPI with higher version numbers
- Hash verification — download packages and verify SHA-256 digests match published hashes
- Vulnerability scanning — audit installed packages against OSV and PyPA advisory databases
- Metadata anomalies — flag packages with suspicious author emails, missing homepages, or very recent first upload dates
Output
JSON report with risk scores per package, detected attack vectors, hash verification results, and CVE findings.
© mukul975, 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 3 other files (scripts, references) in skills/performing-supply-chain-attack-simulation of mukul975/Anthropic-Cybersecurity-Skills.
- SKILL.md
- LICENSE
- references/api-reference.md
- scripts/agent.py
Open the folder on GitHubat commit 54a7988
Compare with similar skills
Performing Supply Chain Attack Simulation 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 |
|---|---|---|---|---|---|---|
| Performing Supply Chain Attack Simulation this skillmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~716 | Automated safety check: Pass | Apache-2.0 | |
| Skill Scannergetsentry/skills | 1k | 4 repos | ~2.5k | Automated safety check: Warn | Apache-2.0 | |
| Serenity Aleabitoreddityan-labs/serenity-aleabitoreddit | 480 | 1 repos | ~3.3k | Automated safety check: Pass | None | |
| Eu CraSushegaad/Claude-Skills-Governance-Risk-and-Compliance | 942 | 1 repos | ~4k | Automated safety check: Pass | MIT | |
| Kesekit Checkcdppcorp/KESE-KIT | 361 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Bom Auditcdxgen/cdxgen | 1.1k | — | ~2.4k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Performing Supply Chain Attack Simulation
What does Performing Supply Chain Attack Simulation do?
Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries…. Performing Supply Chain Attack Simulation is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Simulates and detects software supply chain attacks: typosquatting detection via Levenshtein distance against popular PyPI package names, dependency confusion testing against private registries, SHA-256 package hash verification, and known-CVE scanning with pip-audit.
When should I use Performing Supply Chain Attack Simulation?
Performing Supply Chain Attack Simulation fits situations like: auditing a projects dependencies for malicious; confused packages; assessing package-registry supply-chain risk.
How do I install Performing Supply Chain Attack Simulation in Claude Code?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a claude-code`. Or copy the skill folder (skills/performing-supply-chain-attack-simulation in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/performing-supply-chain-attack-simulation in your project. Claude Code loads it when a task matches its description.
How do I install Performing Supply Chain Attack Simulation in Codex?
Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a codex`. Or copy the skill folder (skills/performing-supply-chain-attack-simulation in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/performing-supply-chain-attack-simulation in your project. Codex loads it when a task matches its description.
Can I use Performing Supply Chain Attack Simulation 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 mukul975/Anthropic-Cybersecurity-Skills --skill performing-supply-chain-attack-simulation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/performing-supply-chain-attack-simulation, .gemini/skills/performing-supply-chain-attack-simulation, .github/skills/performing-supply-chain-attack-simulation and .opencode/skills/performing-supply-chain-attack-simulation in your project.
What does Performing Supply Chain Attack Simulation need to run?
Going by SKILL.md and its folder, Performing Supply Chain Attack Simulation needs Python for the scripts in its folder. Our summary lists: Python 3.
Does Performing Supply Chain Attack Simulation access the network?
SKILL.md names 1 domain. As links in the text: pypi.org. This is read from the text; nothing was executed.
Is Performing Supply Chain Attack Simulation safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. 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 Performing Supply Chain Attack Simulation use?
Performing Supply Chain Attack Simulation 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 Performing Supply Chain Attack Simulation use?
About 716 tokens (SKILL.md is roughly 2.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 726 tokens, read only when the agent opens those files.
What are the alternatives to Performing Supply Chain Attack Simulation?
Skills that share tags, products or a category with Performing Supply Chain Attack Simulation: Skill Scanner (getsentry/skills, 1k stars), Serenity Aleabitoreddit (yan-labs/serenity-aleabitoreddit, 480 stars), Eu Cra (Sushegaad/Claude-Skills-Governance-Risk-and-Compliance, 942 stars) and Kesekit Check (cdppcorp/KESE-KIT, 361 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Performing Supply Chain Attack Simulation?
mukul975 (a GitHub user) maintains it in mukul975/Anthropic-Cybersecurity-Skills, which has 33,922 GitHub stars. The repository holds 637 skills in this directory. The repository was last updated on August 31, 2026.
Source: mukul975/Anthropic-Cybersecurity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.