python-exploitation

A Python security-exploitation skill for testing sandbox escapes, restricted code execution, unsafe deserialization, and template-injection paths.

In plain words
What is it for?
It is for testing Python sandboxes and blacklists, recovering restricted built-ins, examining pickle, marshal, or PyYAML deserialization, and investigating Jinja2 or other template-injection cases.
Why use it?
It helps investigate whether Python restrictions or unsafe input handling can be bypassed to execute unintended code.

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/lu1sdv/skillsmd/python-exploitation
Any agent
npx skills add Lu1sDV/skillsmd --skill python-exploitation
Clone the repo
git clone --depth 1 https://github.com/Lu1sDV/skillsmd

Made for: Claude Code, Codex.

Per session 125 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,163 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 $0.00125 $0.02163
Opus 5 $0.00063 $0.01081
Sonnet 5 $0.00025 $0.00433
Haiku 4.5 $0.00013 $0.00216

Measured yesterday against content hash 3cad6a060ec9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

python-exploitation 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 yesterday.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

| interactive shell reachable | `breakpoint()` / `PYTHONBREAKPOINT=os.system` · `code.interact()` · pdb via `help()`→`sys.modules['pdb']` | [pyjail-escape](references/pyjail-escape.md) |
python-exploitation/SKILL.md · 75 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

4 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. yesterday First seen · 75 lines · 125 tokens per session scan A 3cad6a060ec9

Subscribe to this mod's changes

python-exploitation is a skill published in the GitHub repository Lu1sDV/skillsmd (2 stars, last pushed 3d ago), with no licence file. It adds 125 tokens to every session and 2,163 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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