supply-chain-scan

supply-chain-scan is a skill for Claude Code, Codex from samugit83/redamon. It costs 115 tokens per session (861 once invoked), scanned A, original, MIT.

A guide for changing RedAmon's supply-chain scanner, which checks software dependencies and source code for security risks using offline databases and several scanners.

In plain words
What is it for?
Use it when modifying OSV, GuardDog, retire, trufflehog, offline database setup, file permissions, or soft-error reporting.
Why use it?
It prevents scans from pretending to have checked data that is missing or invalid, and keeps the hardened scanner able to read its offline database.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions AGENTS.md.

About the project

RedAmon is an AI framework that connects reconnaissance, exploitation, and post-exploitation activities into an automated security-testing pipeline, while organizing findings and proposing code fixes. It is for authorized penetration testing, security research, and education. The catalogue entries provide skills and instructions for working with the framework.

samugit83/redamon · 2,403 stars · on GitHub

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/samugit83/redamon/supply-chain-scan
Any agent
npx skills add samugit83/redamon --skill supply-chain-scan
Clone the repo
git clone --depth 1 https://github.com/samugit83/redamon

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 supply-chain-scan

README.md
[![agentmods](https://agentmods.dev/badge/skills/samugit83/redamon/supply-chain-scan.svg)](https://agentmods.dev/skills/samugit83/redamon/supply-chain-scan)
Your own site
<a href="https://agentmods.dev/skills/samugit83/redamon/supply-chain-scan"><img src="https://agentmods.dev/badge/skills/samugit83/redamon/supply-chain-scan.svg" alt="Measured on agentmods" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 861 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 5.1 $0.00115 $0.00861
Opus 5 $0.00057 $0.00430
Sonnet 5 $0.00023 $0.00172
Haiku 4.5 $0.00012 $0.00086

Measured 6d ago against content hash 13883336d222, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

supply-chain-scan 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 6d 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.

skills/supply-chain-scan/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to Use

  • Changing any of the three supply-chain layers (OSV, GuardDog, retire/trufflehog) or the offline database plumbing.

The supply_chain_common-must-be-bind-mounted rule is in the AGENTS.md CRITICAL RULES; this skill is the scanning behaviour.


Critical Rules

  • NEVER assume the offline OSV database is populated. It is filled lazily, per-ecosystem, only on the explicit --download-offline-databases step - NOT on every scan and NOT at install time (scanners/supply_chain_common/osv_db_sync.py). A scan against an unsynced ecosystem must report it as missing, not crash.
  • NEVER chmod the OSV DB tighter than world-readable. The scanner runs hardened and non-root; osv_db_sync.py makes the whole tree world-readable/traversable on purpose so the scanner can read it. Restricting it breaks offline scans silently.
  • NEVER erase an existing soft-error marker on a failed/invalid analysis. A package the analyzer never actually inspected is recorded as a soft_error (scanners/supply_chain_common/deep_recovery.py); invalid GuardDog output must be dropped, not allowed to overwrite those markers (regression fixed in commit c5cd6a16).
  • NEVER run the OSV binary without the --offline pairing. Offline mode uses the --offline --download-offline-databases pair; using one without the other either hits the network or reads an empty DB.

Layers

Layer Runner Note
known vulns osv_runner.py + osv_db_sync.py offline OSV DB (named volume, lazily synced)
malicious behaviour guarddog_runner.py GuardDog heuristics; soft-errors via deep_recovery.py
dispatch analyzer_dispatch.py routes a package to the right analyzer

Read the full file on GitHub · 72 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. 6d ago First seen · 72 lines · 115 tokens per session scan A 13883336d222

Subscribe to this mod's changes

supply-chain-scan is a skill published in the GitHub repository samugit83/redamon (2,403 stars, last pushed 3d ago), licensed MIT. It adds 115 tokens to every session and 861 once invoked, about $0.0006 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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