ctf-misc

ctf-misc is a skill for Claude Code, Codex from MateoBogo/CLEAVE. It costs 0 tokens per session (1,145 once invoked), scanned A, original, no licence file.

A collection of methods for miscellaneous capture-the-flag (CTF) puzzles that do not fit one standard category. It includes encoding, constraint-solving, QR codes, radio signals, WebAssembly games, and attacks against AI systems.

In plain words
What is it for?
Use it for Python or shell restrictions, Z3 constraint problems, QR and signal decoding, WebAssembly games, unusual programming languages, game theory, and AI-agent security challenges.
Why use it?
It provides starting points for unusual puzzles where a normal web, binary, or cryptography workflow may not apply. It also covers specialized formats and puzzle rules in one place.

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/mateobogo/cleave/ctf-misc
Any agent
npx skills add MateoBogo/CLEAVE --skill ctf-misc
Clone the repo
git clone --depth 1 https://github.com/MateoBogo/CLEAVE

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 ctf-misc

README.md
[![agentmods](https://agentmods.dev/badge/skills/mateobogo/cleave/ctf-misc.svg)](https://agentmods.dev/skills/mateobogo/cleave/ctf-misc)
Your own site
<a href="https://agentmods.dev/skills/mateobogo/cleave/ctf-misc"><img src="https://agentmods.dev/badge/skills/mateobogo/cleave/ctf-misc.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,145 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00000 $0.01145
Opus 5 $0.00000 $0.00573
Sonnet 5 $0.00000 $0.00229
Haiku 4.5 $0.00000 $0.00114

Measured 3d ago against content hash 84a52ab74d82, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ctf-misc scanned grade A with 1 finding 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- [linux-privesc.md](linux-privesc.md) — sudo wildcard, monit confcheck, NFS, PostgreSQL COPY TO PROGRAM, Zabbix

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

skills/ctf-misc/SKILL.md · 57 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

Files

What ships with it

10 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. 3d ago First seen · 57 lines · 0 tokens per session scan A 84a52ab74d82

Subscribe to this mod's changes

ctf-misc is a skill published in the GitHub repository MateoBogo/CLEAVE (4 stars, last pushed 3mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,145 tokens. A static security scan graded it A with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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