mcp2agy-ctf

mcp2agy-ctf is a skill for Claude Code, Codex from uziii2208/mcp2agy. It costs 82 tokens per session (1,027 once invoked), scanned A, original, MIT.

A coordinated solver for capture-the-flag security competitions, started with the /ctf command. CTF challenges are puzzles that test skills such as exploiting programs, reverse-engineering code, web security, cryptography, and digital forensics.

In plain words
What is it for?
It classifies challenges as Pwn, Reverse Engineering, Web, Crypto, or Forensics, coordinates specialist solvers, and produces solve scripts, captured flags, and explanations.
Why use it?
It routes each challenge to the relevant specialist so different problem types can be worked on in parallel.

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/uziii2208/mcp2agy/ctf
Any agent
npx skills add uziii2208/mcp2agy --skill ctf
Clone the repo
git clone --depth 1 https://github.com/uziii2208/mcp2agy

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 mcp2agy-ctf

README.md
[![agentmods](https://agentmods.dev/badge/skills/uziii2208/mcp2agy/ctf.svg)](https://agentmods.dev/skills/uziii2208/mcp2agy/ctf)
Your own site
<a href="https://agentmods.dev/skills/uziii2208/mcp2agy/ctf"><img src="https://agentmods.dev/badge/skills/uziii2208/mcp2agy/ctf.svg" alt="Measured on agentmods" height="20"></a>
Per session 82 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,027 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 $0.00082 $0.01027
Opus 5 $0.00041 $0.00513
Sonnet 5 $0.00016 $0.00205
Haiku 4.5 $0.00008 $0.00103

Measured 3d ago against content hash 00db994795ab, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mcp2agy-ctf 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 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.

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.

.agents/plugins/mcp2agy/skills/ctf/SKILL.md · 83 lines

How it starts

The opening of the file, as written. The whole thing — 83 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/ctf — Autonomous Multi-Agent CTF Solving Squad (v3.0.0)

0. Prime Directive & Operating Model

The CTF engine solves competition challenges with extreme efficiency by routing challenges to dedicated specialist subagents:

                      ┌─────────────────────────────────┐
                      │   CTF Lead Orchestrator (/ctf)  │
                      └────────────────┬────────────────┘
                                       │
        ┌──────────────────┬───────────┴───────────┬──────────────────┐
        ▼                  ▼                       ▼                  ▼
┌──────────────┐   ┌──────────────┐        ┌──────────────┐   ┌──────────────┐
│  PWN Solver  │   │  REV Solver  │        │  WEB Solver  │   │CRYPTO Solver │
│ (pwntools/ROP│   │(Ghidra/angr) │        │ (SSTI/SQLi/..)│  │(SageMath/Z3) │
└──────────────┘   └──────────────┘        └──────────────┘   └──────────────┘
        │                  │                       │                  │
        └──────────────────┴───────────┬───────────┴──────────────────┘
                                       ▼
                     mcp2agy_workspace/ctf/
                     ├── solves/<challenge>/solve.py (Captured flag: flag{...})
                     └── writeups/<challenge>.md

1. Category Playbooks & Tooling

1.1 PWN (Binary Exploitation)

  • Stack overflows, format string leaks/overwrites, fastbin/tcache heap exploitation, ROP/ret2libc.
  • Subagent uses pwntools, GDB+pwndbg, checksec, and cyclic patterns.

1.2 REV (Reverse Engineering)

  • ELF/PE binary analysis, stripped symbol recovery, anti-debugging defeat, VM opcode decompilation.
  • Subagent uses angr, Ghidra, z3-solver, and capstone.

1.3 WEB (Web Exploitation)

  • SQLi, SSRF, SSTI, Command Injection, Prototype Pollution, JWT confusion, GraphQL batching, Race conditions.
  • Subagent uses requests, playwright, jwt, burp/mitmproxy.

1.4 CRYPTO (Cryptanalysis)

  • RSA (small e, Wiener's attack, Hastad broadcast, Common Modulus), AES (ECB Penguin, CBC padding oracle), Discrete Log, Diffie-Hellman, ECC point math.
  • Subagent uses pycryptodome, gmpy2, sympy, z3-solver, SageMath scripts.

Read the full file on GitHub · 83 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. 3d ago First seen · 83 lines · 82 tokens per session scan A 00db994795ab

Subscribe to this mod's changes

mcp2agy-ctf is a skill published in the GitHub repository uziii2208/mcp2agy (1 stars, last pushed 4d ago), licensed MIT. It adds 82 tokens to every session and 1,027 once invoked, about $0.0004 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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