time-aware-dependency-cve-scanner

time-aware-dependency-cve-scanner is a skill for Claude Code, Codex from ArabelaTso/Skills-4-SE. It costs 185 tokens per session (2,038 once invoked), scanned A, original, Apache-2.0.

A repository scanner that finds newly disclosed security vulnerabilities, called CVEs, in pinned dependencies after a chosen date. It reads common dependency files and can include indirect dependencies.

In plain words
What is it for?
Scan npm, Maven, Python, Go, and Rust projects by repository path and cutoff date, then produce a structured report of affected dependency versions.
Why use it?
It separates newly disclosed issues from older vulnerabilities, helping you focus review and remediation work on the relevant findings.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Scan npm, Maven, Python, Go, and Rust projects by repository path and cutoff date, then produce a structured report of affected dependency versions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner
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.

Any agent
npx skills add ArabelaTso/Skills-4-SE --skill time-aware-dependency-cve-scanner
Clone the repo
git clone --depth 1 https://github.com/ArabelaTso/Skills-4-SE

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for time-aware-dependency-cve-scanner

README.md
[![agentmods](https://agentmods.dev/badge/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner/github.svg)](https://agentmods.dev/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner)
Your own site
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner/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.

agentmods 80×15 button for time-aware-dependency-cve-scanner

Your own site · 80×15
<a href="https://agentmods.dev/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner"><img src="https://agentmods.dev/badge/skills/arabelatso/skills-4-se/time-aware-dependency-cve-scanner.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 185 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,038 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 5.1 $0.00185 $0.02038
Opus 5 $0.00093 $0.01019
Sonnet 5 $0.00037 $0.00408
Haiku 4.5 $0.00018 $0.00204

Measured 9d ago against content hash 635bd5c10da0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

time-aware-dependency-cve-scanner 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 9d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/parse_dependencies.py, scripts/query_cves.py, scripts/scan_repository.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/time-aware-dependency-cve-scanner/SKILL.md · 264 lines

How it starts

The opening of the file, as written. The whole thing — 264 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Time-Aware Dependency CVE Scanner

Scan repositories for newly disclosed CVEs affecting dependencies after a specific cutoff date. This skill helps track when vulnerabilities were introduced and distinguish between pre-existing and newly disclosed security issues.

Quick Start

Basic scan:

python scripts/scan_repository.py /path/to/repo 2023-01-01

Scan only direct dependencies:

python scripts/scan_repository.py /path/to/repo 2023-01-01 --no-transitive

Output as JSON:

python scripts/scan_repository.py /path/to/repo 2023-01-01 --json > report.json

Workflow

1. Parse Dependencies

The scanner automatically detects and parses dependency manifests:

Supported ecosystems:

  • npm: package.json, package-lock.json, yarn.lock
  • Maven: pom.xml
  • Python: requirements.txt, Pipfile.lock, poetry.lock
  • Go: go.mod, go.sum
  • Cargo: Cargo.toml, Cargo.lock

Manual parsing (if needed):

python scripts/parse_dependencies.py /path/to/repo

This extracts:

  • Package names and exact versions
  • Direct vs transitive dependency classification
  • Ecosystem identification

For detailed manifest formats, see references/dependency_formats.md

2. Query Vulnerability Databases

The scanner queries multiple databases to find CVEs:

Primary source: OSV.dev (Open Source Vulnerabilities)

  • No authentication required
  • Broad ecosystem coverage (npm, PyPI, Maven, Go, crates.io, etc.)
  • Built-in version matching
  • Real-time updates

Additional sources:

  • NVD (National Vulnerability Database) - Official CVE records
  • GitHub Security Advisory - GitHub-curated vulnerabilities

Manual CVE query (for testing):

python scripts/query_cves.py lodash 4.17.20 npm 2023-01-01

For database details and API usage, see references/vulnerability_databases.md

3. Filter by Cutoff Date

The scanner filters CVEs to include only those disclosed after the cutoff date:

Read the full file on GitHub · 264 lines

Files

What ships with it

5 files 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.

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. 9d ago First seen · 264 lines · 185 tokens per session scan A 635bd5c10da0

Subscribe to this mod's changes

time-aware-dependency-cve-scanner is a skill published in the GitHub repository ArabelaTso/Skills-4-SE (252 stars, last pushed 22d ago), licensed Apache-2.0. It adds 185 tokens to every session and 2,038 once invoked, about $0.0009 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 2026-09-03.

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