Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add laurigates/claude-plugins --skill nodejs-containersgit clone --depth 1 https://github.com/laurigates/claude-pluginsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/laurigates/claude-plugins/nodejs-containers)<a href="https://agentmods.dev/skills/laurigates/claude-plugins/nodejs-containers"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/nodejs-containers/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/laurigates/claude-plugins/nodejs-containers"><img src="https://agentmods.dev/badge/skills/laurigates/claude-plugins/nodejs-containers.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 2 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 162 Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.Fix: Pin the image: image:tag or image@sha256:abc123
- medium MCP Rug Pull · line 164 Docker image references without a specific tag (:latest is implicit) or digest (@sha256:...) can be silently replaced by a malicious image.Fix: Pin the image: image:tag or image@sha256:abc123
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00043 | $0.01935 |
| Opus 5.5 | $0.00017 | $0.00774 |
| Sonnet 5.5 | $0.00009 | $0.00387 |
| Haiku 4.5 | $0.00004 | $0.00194 |
Grade A, and why
nodejs-containers scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 28d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
## Distroless runtime: no shell, so no `child_process` to CLI tools How it starts
The opening of the file, as written. The whole thing — 218 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Node.js Container Optimization
Expert knowledge for building optimized Node.js container images using Alpine variants, multi-stage builds, and Node.js-specific dependency management patterns.
When to Use This Skill
| Use this skill when... | Use container-development instead when... |
|---|---|
| Building Node.js-specific Dockerfiles | General multi-stage build patterns |
| Optimizing Node.js image sizes | Language-agnostic container security |
| Handling npm/yarn/pnpm in containers | Docker Compose configuration |
| Dealing with native module builds | Non-Node.js container optimization |
Core Expertise
Node.js Container Challenges:
- Large node_modules directories (100-500MB)
- Full base images include build tools (~900MB)
- Separate dev and production dependencies
- Different package managers (npm, yarn, pnpm)
- Native modules requiring build tools
Key Capabilities:
- Alpine-based images (~100MB vs ~900MB full)
- Multi-stage builds separating build and runtime
- BuildKit cache mounts for node_modules
- Production-only dependency installation
- Non-root user configuration
Optimized Multi-Stage Pattern (Node Servers)
The recommended pattern achieves ~100-150MB images:
# Dependencies stage - production only
FROM node:20-alpine AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
# Build stage - includes devDependencies
FROM node:20-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build
# Runtime stage - minimal
FROM node:20-alpine
WORKDIR /app
# Create non-root user
RUN addgroup -g 1001 -S nodejs && \
adduser -u 1001 -S nodejs -G nodejs
# Copy dependencies and built app
COPY --from=deps --chown=nodejs:nodejs /app/node_modules ./node_modules
COPY --from=build --chown=nodejs:nodejs /app/dist ./dist
COPY --chown=nodejs:nodejs package.json ./
USER nodejs
EXPOSE 3000
HEALTHCHECK --interval=30s CMD node healthcheck.js || exit 1
CMD ["node", "dist/server.js"]
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 28d ago Changed · +35 lines 354f3c5a3559
- 1mo ago First seen · 183 lines · 43 tokens per session scan A 082ab42f73d7
nodejs-containers is a skill published in the GitHub repository laurigates/claude-plugins (59 stars, last pushed today), licensed MIT. It adds 43 tokens to every session and 1,935 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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