competition-supply-chain

competition-supply-chain is a skill for Codex from xAmirHamza77/ReverseOps-Skill. It costs 103 tokens per session (517 once invoked), scanned A, a copy of competition-supply-chain, MIT.

A specialised workflow for capture-the-flag (CTF) challenges about software supply chains—the path from source code and dependencies to the software that runs. It is used after the broader CTF sandbox workflow has established the environment.

In plain words
What is it for?
Tracing dependency changes, registry downloads, suspicious packages, build or release tampering, artifact origins, image builds, and the runtime software that was shipped.
Why use it?
It helps find where the software that was intended differs from what the build or release process actually produced. It keeps evidence about dependencies, builds, packages, and releases in one traceable chain.

Skill for Codex

Written for Codex: agents/openai.yaml present. Also seen: $skill-name invocation.

Good fit Tracing dependency changes, registry downloads, suspicious packages, build or release tampering, artifact origins, image builds, and the runtime software that was shipped.

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Install with agentmods
npx agentmods add skills/xamirhamza77/reverseops-skill/competition-supply-chain
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 xAmirHamza77/ReverseOps-Skill --skill competition-supply-chain
Clone the repo
git clone --depth 1 https://github.com/xAmirHamza77/ReverseOps-Skill

Made for: 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 competition-supply-chain

README.md
[![agentmods](https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-supply-chain/github.svg)](https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-supply-chain)
Your own site
<a href="https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-supply-chain"><img src="https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-supply-chain/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 competition-supply-chain

Your own site · 80×15
<a href="https://agentmods.dev/skills/xamirhamza77/reverseops-skill/competition-supply-chain"><img src="https://agentmods.dev/badge/skills/xamirhamza77/reverseops-skill/competition-supply-chain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 517 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.
Origin 100% copy Near-identical to another mod 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 $0.00103 $0.00517
Opus 5 $0.00051 $0.00259
Sonnet 5 $0.00021 $0.00103
Haiku 4.5 $0.00010 $0.00052

Measured 9d ago against content hash 9db0fa1c57f9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

competition-supply-chain 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.

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.

Origin

This is a copy

100% identical to competition-supply-chain — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

CTF-Sandbox/competition-supply-chain/SKILL.md · 49 lines

How it starts

The opening of the file, as written. The whole thing — 49 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Supply Chain

Use this skill only as a downstream specialization after $ctf-sandbox-orchestrator is already active and has established sandbox assumptions, node ownership, and evidence priorities. If that has not happened yet, return to $ctf-sandbox-orchestrator first.

Use this skill when the challenge is really about provenance, dependency drift, build output, release flow, or what runtime artifact actually got shipped.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Split the problem into source, dependency resolution, build, packaging, publish, and runtime consumption.
  2. Decide where the first divergence occurs between intended artifact and runtime artifact.
  3. Keep provenance as a compact chain, not a scattered set of observations.
  4. Reproduce the smallest possible build or package path that still shows the issue.
  5. Separate checked-in intent from what the pipeline actually emitted.

Workflow

1. Trace Provenance End-To-End

  • Map source checkout, lockfiles, dependency fetch, pre/post-install steps, build scripts, packaging, publish target, and runtime consumer.
  • Compare declared version, resolved version, and shipped artifact.
  • Note registry, cache, mirror, or CI environment differences.

2. Reconcile Build-Time And Runtime

  • Compare manifests with image layers, mounted secrets, generated files, and runtime hooks.
  • Identify whether the decisive mutation happens in dependency install, build step, publish step, or runtime bootstrap.

3. Report The Break Point

  • State the earliest point where provenance diverges.
  • Keep evidence in one short chain from source to runtime consumer.

Read This Reference

  • Load references/supply-chain.md for the provenance checklist, evidence packaging, and common pipeline failure modes.

What To Preserve

  • Declared dependency, resolved dependency, and runtime artifact versions
  • CI step names, registry pulls, artifact hashes, and image or package layers
  • The runtime consumer that actually accepts or executes the artifact

Read the full file on GitHub · 49 lines

Files

What ships with it

2 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 · 49 lines · 103 tokens per session scan A 9db0fa1c57f9

Subscribe to this mod's changes

competition-supply-chain is a skill published in the GitHub repository xAmirHamza77/ReverseOps-Skill (4 stars, last pushed 1mo ago), licensed MIT. It adds 103 tokens to every session and 517 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to competition-supply-chain, differing in 0 lines, and is treated as a copy.

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