dependency-review

A read-only review procedure for dependencies: external libraries, tools, lockfiles, vendor copies, and generated dependency files used by a project. A lockfile records the exact versions selected for installation.

In plain words
What is it for?
Use it when dependency manifests, lockfiles, vendor state, fetched tools, registries, or version pins change.
Why use it?
It helps reveal unnecessary, unpinned, poorly sourced, or irreproducible dependencies without changing the project.

Skill for Claude CodeCodex

Part of the yarstack plugin — 38 skills shipped together

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 skills/yarlson/yarstack/dependency-review
Any agent
npx skills add yarlson/yarstack --skill dependency-review
Clone the repo
git clone --depth 1 https://github.com/yarlson/yarstack

Made for: Claude Code, Codex.

Or install yarstack, the plugin that ships this one along with the rest of its 38 skills.

Per session 38 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 308 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 $0.00038 $0.00308
Opus 5 $0.00019 $0.00154
Sonnet 5 $0.00008 $0.00062
Haiku 4.5 $0.00004 $0.00031

Measured 2d ago against content hash 9ba71d720e64, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dependency-review 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/yarstack/skills/dependency-review/SKILL.md · 24 lines

What it actually says

Dependency Review

Own dependency necessity, provenance, pinning, reproducibility, and generated-state consistency.

Workflow

  1. Confirm the changed dependency surface, comparison target, repository pinning policy, and expected update path.
  2. Establish the consumer and current need for each added, removed, or changed dependency or tool.
  3. Verify manifest, lockfile, vendor, checksum, and generated-state consistency without normalizing unrelated content.
  4. Check provenance, registries, Git sources, floating versions, fetched installers, lifecycle scripts, and reproducibility.
  5. Prefer trusted offline and non-mutating checks. Require explicit authority before network access, installation, cache mutation, lifecycle-script execution, or regeneration.
  6. Delegate exploitability and credentials to security-review, CI machinery to ci-review, infrastructure impact to infra-review, and runtime compatibility to rollout-readiness-review.

Report each finding with location, affected contract, evidence, consequence, smallest correction, verification, and uncertainty. State directly when no actionable finding exists. An evidenced inconclusive result is valid when tooling or provenance is unavailable.

Do not upgrade unrelated dependencies, churn an entire lockfile, add scanners, or trust committed generated code without checking its source.

Finish when each changed dependency is accounted for and residual provenance or reproducibility risk is explicit.

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 · 24 lines · 38 tokens per session scan A 9ba71d720e64

Subscribe to this mod's changes

dependency-review is a skill published in the GitHub repository yarlson/yarstack (3 stars, last pushed 5d ago), licensed MIT. It adds 38 tokens to every session and 308 once invoked, about $0.0002 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 2026-08-31.

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