bare-no-optional

bare-no-optional is a skill for Claude Code, Codex from rtwsvj/skill-switch. It costs 20 tokens per session (62 once invoked), scanned A, original, MIT.

A minimal test fixture containing only the required skill metadata and no optional fields.

In plain words
What is it for?
Use it to test metadata-convention checks for sparse skills.
Why use it?
It helps check that missing recommended fields produce a gentle informational hint rather than an error.

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/rtwsvj/skill-switch/bare-no-optional
Any agent
npx skills add rtwsvj/skill-switch --skill bare-no-optional
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 bare-no-optional

README.md
[![agentmods](https://agentmods.dev/badge/skills/rtwsvj/skill-switch/bare-no-optional.svg)](https://agentmods.dev/skills/rtwsvj/skill-switch/bare-no-optional)
Your own site
<a href="https://agentmods.dev/skills/rtwsvj/skill-switch/bare-no-optional"><img src="https://agentmods.dev/badge/skills/rtwsvj/skill-switch/bare-no-optional.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 62 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 $0.00020 $0.00062
Opus 5 $0.00010 $0.00031
Sonnet 5 $0.00004 $0.00012
Haiku 4.5 $0.00002 $0.00006

Measured 5d ago against content hash 227ce4411b57, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

bare-no-optional 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/bare-no-optional/SKILL.md · 10 lines

What it actually says

Bare No Optional

This skill has only the required fields (name + description) and none of the recommended optional fields. It should trigger a single info-level convention hint.

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 · 10 lines · 20 tokens per session scan A 227ce4411b57

Subscribe to this mod's changes

bare-no-optional is a skill published in the GitHub repository rtwsvj/skill-switch (1 stars, last pushed 12d ago), licensed MIT. It adds 20 tokens to every session and 62 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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