competition-agent-cloud

A specialised workflow for CTF sandbox challenges involving AI agents, prompts, tools, cloud systems, containers, and software delivery pipelines. CTFs are security exercises where participants investigate or exploit deliberately vulnerable setups.

In plain words
What is it for?
It helps analyse prompt injection, poisoned retrieved content, exposed secrets, deployment differences, and build or release supply-chain problems.
Why use it?
It provides a structured way to trace how untrusted input can reach an AI tool or infrastructure side effect, while separating intended configuration from what is actually running.

Skill for Claude CodeCodex

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/2233admin/reverse-skill-evolver/competition-agent-cloud
Any agent
npx skills add 2233admin/reverse-skill-evolver --skill competition-agent-cloud
Clone the repo
git clone --depth 1 https://github.com/2233admin/reverse-skill-evolver

Made for: Claude Code, Codex.

Per session 107 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 785 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00107 $0.00785
Opus 5 $0.00053 $0.00392
Sonnet 5 $0.00021 $0.00157
Haiku 4.5 $0.00011 $0.00078

Measured 2d ago against content hash 9e56a603f14f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

competition-agent-cloud 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.

Origin

This is a copy

100% identical to competition-agent-cloud — 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-Orchestrator/competition-agent-cloud/SKILL.md · 54 lines

How it starts

The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Competition Agent Cloud

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 path is driven by prompt-to-tool execution, retrieval and memory boundaries, deployment drift, or build and release provenance.

Reply in Simplified Chinese unless the user explicitly requests English.

Quick Start

  1. Decide whether the dominant path is agentic or infrastructure-driven.
  2. Map one minimal control chain: untrusted input -> visible context -> tool or deployment side effect.
  3. Distinguish checked-in intent from live runtime truth.
  4. Keep prompts, tool args, manifests, mounts, and provenance steps in compact evidence blocks.
  5. Reproduce the exploit or misconfiguration with minimal context and minimal instrumentation.

Workflow

1. Agent And Prompt Injection

  • Treat prompts, tool schemas, retrieved chunks, planner notes, memory files, and handoffs as challenge artifacts.
  • Prove one minimal chain from untrusted content to model-visible instruction to tool side effect.
  • Distinguish claimed capability from runtime-exposed capability.

2. Cloud, Containers, And CI/CD

  • Split build-time, deploy-time, and runtime.
  • Reconcile compose or kube manifests with live mounts, env, logs, and traffic.
  • Trace provenance from source to dependency resolution to build to publish to runtime consumer.

Read This Reference

  • Load references/agent-cloud.md for the control-stack checklist, deployment-truth checklist, and evidence packaging.
  • If the task is specifically about prompt-boundary abuse or retrieved-content-to-tool drift, prefer $competition-prompt-injection.
  • If the task is specifically about CI, dependency provenance, registry drift, or shipped artifacts, prefer $competition-supply-chain.
  • If the task is specifically about queue payloads, async worker drift, retries, or worker-only runtime state, prefer $competition-queue-worker-drift.
  • If the task is specifically about SSRF to internal control surfaces, metadata endpoints, or metadata-derived token pivots, prefer $competition-ssrf-metadata-pivot.
  • If the task is specifically about proxy-upstream parse differentials, ambiguous headers, path normalization drift, or request smuggling behavior, prefer $competition-request-normalization-smuggling.
  • If the task is specifically about metadata-service access, instance or workload identity, link-local token paths, or metadata-derived privilege, prefer $competition-cloud-metadata-path.
  • If the task is specifically about kube API permissions, service-account trust, admission behavior, controller drift, or cluster secret exposure, prefer $competition-k8s-control-plane.
  • If the task is specifically about live mounts, sidecars, init containers, or runtime-only secret exposure, prefer $competition-container-runtime.
  • If the task is specifically about container-to-host boundary crossing, kernel-surface prerequisites, or escape primitive verification, prefer $competition-kernel-container-escape.

Read the full file on GitHub · 54 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. 2d ago First seen · 54 lines · 107 tokens per session scan A 9e56a603f14f

Subscribe to this mod's changes

competition-agent-cloud is a skill published in the GitHub repository 2233admin/reverse-skill-evolver (13 stars, last pushed 22d ago), licensed MIT. It adds 107 tokens to every session and 785 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-agent-cloud, differing in 0 lines, and is treated as a copy.

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