vyper-vanguard

vyper-vanguard is a skill for Claude Code, Codex from zerocoolailabs/ZeroSkills. It costs 0 tokens per session (1,664 once invoked), scanned A, original, no licence file.

A Vyper smart-contract review skill for finding bugs caused by Vyper language behaviour and incorrect protocol accounting. Vyper is a programming language used to write Ethereum smart contracts.

In plain words
What is it for?
Auditing Vyper contracts for call-handling, interface, arithmetic, reentrancy, accounting, and zero-value edge cases.
Why use it?
Small language or accounting edge cases can mis-handle returned data, permissions, arithmetic, shares, balances, or state over repeated operations.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Auditing Vyper contracts for call-handling, interface, arithmetic, reentrancy, accounting, and zero-value edge cases.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zerocoolailabs/zeroskills/vyper-vanguard
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 zerocoolailabs/ZeroSkills --skill vyper-vanguard
Clone the repo
git clone --depth 1 https://github.com/zerocoolailabs/ZeroSkills

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 vyper-vanguard

README.md
[![agentmods](https://agentmods.dev/badge/skills/zerocoolailabs/zeroskills/vyper-vanguard.svg)](https://agentmods.dev/skills/zerocoolailabs/zeroskills/vyper-vanguard)
Your own site
<a href="https://agentmods.dev/skills/zerocoolailabs/zeroskills/vyper-vanguard"><img src="https://agentmods.dev/badge/skills/zerocoolailabs/zeroskills/vyper-vanguard.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 1,664 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 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 5.1 $0.00000 $0.01664
Opus 5 $0.00000 $0.00832
Sonnet 5 $0.00000 $0.00333
Haiku 4.5 $0.00000 $0.00166

Measured 8d ago against content hash 99c01be570e0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

vyper-vanguard 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 8d 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.

vyper-vanguard/SKILL.md · 123 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

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. 8d ago First seen · 123 lines · 0 tokens per session scan A 99c01be570e0

Subscribe to this mod's changes

vyper-vanguard is a skill published in the GitHub repository zerocoolailabs/ZeroSkills (54 stars, last pushed 27d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,664 tokens. 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 2026-08-30.

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