malformed-version

malformed-version is a skill for Claude Code, Codex from rtwsvj/skill-switch. It costs 17 tokens per session (58 once invoked), scanned A, original, MIT.

A test fixture whose version field is an unquoted number instead of a text value.

In plain words
What is it for?
Use it to test validation and convention checks for skill metadata.
Why use it?
It helps check that invalid version types produce the intended warning.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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/rtwsvj/skill-switch/malformed-version
Any agent
npx skills add rtwsvj/skill-switch --skill malformed-version
Clone the repo
git clone --depth 1 https://github.com/rtwsvj/skill-switch

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 malformed-version

README.md
[![agentmods](https://agentmods.dev/badge/skills/rtwsvj/skill-switch/malformed-version.svg)](https://agentmods.dev/skills/rtwsvj/skill-switch/malformed-version)
Your own site
<a href="https://agentmods.dev/skills/rtwsvj/skill-switch/malformed-version"><img src="https://agentmods.dev/badge/skills/rtwsvj/skill-switch/malformed-version.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 58 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 5.1 $0.00017 $0.00058
Opus 5 $0.00009 $0.00029
Sonnet 5 $0.00003 $0.00012
Haiku 4.5 $0.00002 $0.00006

Measured 5d ago against content hash 74a05a9ae955, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

malformed-version 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 5d 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.

tests/fixtures/skills-conventions/malformed-version/SKILL.md · 11 lines

What it actually says

Malformed Version

This skill sets version as a bare integer instead of a quoted string. It should trigger a convention/version-not-string warning.

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. 5d ago First seen · 11 lines · 17 tokens per session scan A 74a05a9ae955

Subscribe to this mod's changes

malformed-version is a skill published in the GitHub repository rtwsvj/skill-switch (1 stars, last pushed 12d ago), licensed MIT. It adds 17 tokens to every session and 58 once invoked, about $0.0001 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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