pkg-guardian

A specialised agent for securing project packages and their dependency trees against known vulnerabilities.

In plain words
What is it for?
Use it for CVE scans through OSV.dev, dependency audits, vulnerability fixes, and monitoring across npm, pip, uv, cargo, Go, and other package ecosystems.
Why use it?
It can check packages during installation and security reviews, reducing supply-chain risks from unsafe dependencies.

Agent

Part of the infynon-pkg plugin — 3 skills, 1 agent 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 agents/d4rkninja/code-guardian/pkg-guardian
Clone the repo
git clone --depth 1 https://github.com/d4rkNinja/code-guardian

Or install infynon-pkg, the plugin that ships this one along with the rest of its 3 skills, 1 agent.

Per session 73 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,766 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. Scan, not verified.
Origin unknown 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 $0.00073 $0.02766
Opus 5 $0.00036 $0.01383
Sonnet 5 $0.00015 $0.00553
Haiku 4.5 $0.00007 $0.00277

Measured 3d ago against content hash 423b2fd1db8d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

pkg-guardian scanned grade B with 2 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 3d 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsSL https://raw.githubusercontent.com/d4rkNinja/infynon-cli/main/scripts/install.sh | bash

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsSL https://raw.githubusercontent.com/d4rkNinja/infynon-cli/main/scripts/install.sh | bash
infynon-pkg/agents/pkg-guardian.md · 251 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 3d ago First seen · 251 lines · 73 tokens per session scan B 423b2fd1db8d

Subscribe to this mod's changes

pkg-guardian is an agent published in the GitHub repository d4rkNinja/code-guardian (5 stars, last pushed 4mo ago), with no licence file. It adds 73 tokens to every session and 2,766 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.