Snyk - Vulnerability Scanning

VerifiedCaution

Find and fix vulnerabilities in dependencies, containers, and IaC with Snyk.

Sby Skills Guide Bot
SecurityIntermediate
8/9/2026
Claude CodeCursorWindsurfCodex
#snyk#vulnerability-scanning#dependency-audit#container-security#iac

Recommended for

Automated summary

This skill walks through using the Snyk CLI to find and fix vulnerabilities in open-source dependencies, container images, IaC configurations, and code.

Strengths

  • Covers four separate scanning surfaces: dependencies, containers, IaC, and code
  • Gives exact commands for install, auth, and repeat scans
  • Shows how to fail CI only on critical issues using --severity-threshold
  • Names alternatives (npm audit, Dependabot, Socket.dev) so you can judge fit

Limitations

  • The 200 free dependency tests per month are noted but overage behavior is not explained
  • Commands assume an authenticated Snyk account and network access, so offline use is unaddressed
  • Doesn't cover result triage or prioritization beyond a severity threshold
When to use it

When you need to audit a project's dependencies or Docker image, or add a security gate to a CI/CD pipeline.

When not to use it

When you need deep static analysis (SAST) of application code or an offline security audit without a Snyk account.

Security analysis

Caution
Quality score72/100

The skill uses legitimate security scanning commands but involves installing software globally, authenticating, and potentially uploading project data to a third-party service. These actions are normal for Snyk usage but require network and system-level access, so caution is warranted rather than classifying it as completely safe.

Findings
  • •Instructs global installation of npm package (npm install -g snyk), which requires network and system-level changes.
  • •Uses snyk auth, which may prompt for credentials or open a browser; user should be aware of token handling.
  • •Commands like snyk container test and snyk iac test --report may upload data to Snyk's dashboard, which could expose project information.
How this analysis is made

Examples

Audit npm dependencies
Run Snyk on this Node project and show me which dependencies have vulnerabilities, then auto-fix what you safely can.
Scan a Docker image
Scan my-app:latest with Snyk container test and summarize the CVEs by severity.
Add a CI security gate
Add a Snyk step to our GitHub Actions workflow that only fails the build on high-severity vulnerabilities.

name: snyk description: >- Find and fix vulnerabilities in code and dependencies with Snyk. Use when a user asks to scan for security vulnerabilities, audit npm packages, check Docker images for CVEs, or integrate security into CI/CD. license: Apache-2.0 compatibility: 'Node.js, Python, Go, Java, Docker, IaC' metadata: author: terminal-skills version: 1.0.0 category: devops tags: - snyk - vulnerability - dependencies - docker - ci-cd

Snyk

Overview

Snyk finds and fixes vulnerabilities in open-source dependencies, container images, IaC configs, and code. Integrates into CLI, CI/CD, Git repos, and IDEs.

Instructions

Step 1: Setup

npm install -g snyk
snyk auth

Step 2: Scan Dependencies

snyk test                    # test for vulnerabilities
snyk monitor                 # continuous monitoring
snyk fix                     # auto-fix vulnerabilities

Step 3: Container Scanning

snyk container test node:20-alpine
snyk container test my-app:latest --file=Dockerfile

Step 4: IaC Scanning

snyk iac test                # scan Terraform, K8s manifests
snyk iac test --report       # upload to dashboard

Guidelines

  • Free tier: 200 dependency tests/month, unlimited container tests.
  • Use --severity-threshold=high in CI to fail only on critical issues.
  • snyk fix auto-generates PRs with dependency upgrades.
  • Alternatives: npm audit (basic), GitHub Dependabot (free), Socket.dev (supply chain).

From the file to a first result

The download contains exactly the content displayed on this page. This copy may differ from the latest version in the source repository.

View the source and supporting files

This download contains SKILL.md only. Any scripts, references, templates and dependencies are not included. Get the required files from the source, preserving their directory structure, before continuing.

1. Download the file

Download SKILL.md

From the root of a test project, save the file as .skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md, or use the command below. This folder is for inspecting the skill before installation.

Command for macOS/Linux or WSL: requires a POSIX shell and curl. On Windows without WSL, use the download button and create the folder manually.

mkdir -p '.skill-downloads/snyk-vulnerability-scanning-msl9cetl' && curl --fail --show-error --location 'https://skills-guides.com/api/skills/snyk-vulnerability-scanning-msl9cetl/download' --output '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md.part' && mv '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md.part' '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md'

2. Check prerequisites

Read SKILL.md before using it. If it references scripts or external services, inspect them and prepare the required access in your test environment.

Environment declared by the author: Node.js, Python, Go, Java, Docker, IaC

No recognized prerequisites section in this file. This does not mean it is self-contained: libraries, tools and access requirements may be mentioned elsewhere in the content or source repository.

The platforms on this page are catalog indications. The paths below follow tool documentation; they do not prove this skill has been run in those tools. No minimum tool version is confirmed for this listing.

3. Load the skill

After inspection, copy the complete folder into your project using one of the commands below, then open a new tool session. The command stops if a folder with the same name already exists: compare the files before replacing it.

Claude Code
test -f '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && test -s '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && mkdir -p '.claude/skills' && test ! -e '.claude/skills/snyk' && cp -R '.skill-downloads/snyk-vulnerability-scanning-msl9cetl' '.claude/skills/snyk'

Cursor
test -f '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && test -s '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && mkdir -p '.cursor/skills' && test ! -e '.cursor/skills/snyk' && cp -R '.skill-downloads/snyk-vulnerability-scanning-msl9cetl' '.cursor/skills/snyk'

Codex
test -f '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && test -s '.skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md' && mkdir -p '.agents/skills' && test ! -e '.agents/skills/snyk' && cp -R '.skill-downloads/snyk-vulnerability-scanning-msl9cetl' '.agents/skills/snyk'

OpenSkills

OpenSkills must already be installed. The local install/read procedure is checked with OpenSkills 1.5.0, which requires Node.js ≥ 20.6.0. Catalog slugs are not resolved automatically.

Official OpenSkills installation
openskills install './.skill-downloads/snyk-vulnerability-scanning-msl9cetl'

openskills read 'snyk-vulnerability-scanning-msl9cetl'

Reading should display the installed file content and its base directory. It does not run the skill or install its dependencies.

For an agent that reads AGENTS.md, then sync the index. This command changes AGENTS.md: review the diff before using it.

openskills sync

Manual method or another tool: attach SKILL.md to a conversation, or open it in an agent that can read files. Include any required supporting resources. No universal folder is recognized by every tool.

4. Try a first task

Use a short, synthetic input: an API endpoint, a small document or an interface brief. In a new conversation, attach the file or give the agent its path, then adapt this request:

Read .skill-downloads/snyk-vulnerability-scanning-msl9cetl/SKILL.md and apply its instructions to this example: [describe a test input]. Identify any missing files, dependencies or access. Produce the result requested by the skill without inventing data or running unreviewed scripts.

Expected result: output matching the skill instructions, or a precise list of missing prerequisites. A read confirmation alone does not validate a first use. If an external resource is unavailable, that path remains untested.

Related skills