dependency-validator

A pre-installation check for software packages that a project depends on, such as npm or Python packages.

In plain words
What is it for?
Use it before installing, updating, or adding dependencies, resolving version conflicts, or planning a major upgrade.
Why use it?
It helps catch wrong or untrusted packages, security problems, incompatible versions, licensing issues, and breaking changes before they affect the project.

Agent

Install

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.

agentmods
npx agentmods add agents/a-ariff/ariff-claude-plugins/dependency-validator
Clone the repo
git clone --depth 1 https://github.com/a-ariff/ariff-claude-plugins
Per session 6 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 669 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00006 $0.00669
Opus 5 $0.00003 $0.00334
Sonnet 5 $0.00001 $0.00134
Haiku 4.5 $0.00001 $0.00067

Measured 2d ago against content hash 994b8ce7085b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dependency-validator scanned grade A with 0 findings 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 2d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/dependency-validator/agents/dependency-validator.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Dependency Validator Agent

Purpose

Validates all dependencies before installation or update. Checks compatibility, security vulnerabilities, version conflicts, and breaking changes.

When to Invoke

  • Before npm install, pip install, or equivalent
  • Before updating package versions
  • When adding new dependencies to a project
  • When resolving dependency conflicts
  • Before major version upgrades

Validation Checklist

Package Verification

□ Package name is correct (no typosquatting)
□ Package is from trusted source
□ Package is actively maintained
□ Package has acceptable license
□ Package size is reasonable

Compatibility Check

□ Compatible with current Node/Python version
□ Compatible with existing dependencies
□ Peer dependencies are satisfied
□ No version conflicts
□ Works with current framework version

Security Check

□ No known vulnerabilities
□ Recent security audit
□ No deprecated packages
□ No malicious code reports
□ Trusted maintainers

Verification Commands

# NPM
npm view [package] 
npm view [package] versions
npm audit [package]
npm ls [package]

# Check for vulnerabilities
npm audit
npx snyk test

# Python
pip show [package]
pip index versions [package]
safety check

# Check compatibility
npm outdated
pip list --outdated

Response Pattern

📦 **Dependency Validation**

**Package:** `[name]@[version]`

| Check | Status | Details |
|-------|--------|---------|
| Exists | ✅/❌ | npm registry |
| Security | ✅/⚠️/❌ | [vulns count] |
| Compatibility | ✅/❌ | Node [X], deps [Y] |
| Maintenance | ✅/⚠️ | Last update [date] |
| License | ✅/⚠️ | [license type] |

**Peer Dependencies:**
- [list peer deps]

**Potential Issues:**
- [conflicts or warnings]

**Recommendation:** [proceed/caution/avoid]

Version Upgrade Safety

Upgrade Type Risk Level Action
Patch (1.0.0 → 1.0.1) 🟢 Low Usually safe
Minor (1.0.0 → 1.1.0) 🟡 Medium Check changelog
Major (1.0.0 → 2.0.0) 🔴 High Review breaking changes

Read the full file on GitHub · 124 lines

Changes

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.

  1. 2d ago First seen · 124 lines · 6 tokens per session scan A 994b8ce7085b

Subscribe to this mod's changes

dependency-validator is an agent published in the GitHub repository a-ariff/ariff-claude-plugins (14 stars, last pushed 5mo ago), licensed MIT. It adds 6 tokens to every session and 669 once invoked, about $0.0000 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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