model-only-skill

A test instruction used to verify that skills disabled by a user can still be available to the underlying model.

In plain words
What is it for?
Use it for model-only snapshot or availability checks.
Why use it?
It supports checking the difference between what appears in a user-facing catalogue and what the model can access.

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/whitelonng/dshcode/model-only-skill
Any agent
npx skills add whitelonng/dshcode --skill model-only-skill
Clone the repo
git clone --depth 1 https://github.com/whitelonng/dshcode

Made for: Claude Code, Codex.

Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 36 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 100% copy Near-identical to another mod 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 $0.00016 $0.00036
Opus 5 $0.00008 $0.00018
Sonnet 5 $0.00003 $0.00007
Haiku 4.5 $0.00002 $0.00004

Measured 2d ago against content hash 31e6bdfb0801, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

model-only-skill 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 2d 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.

Origin

This is a copy

100% identical to model-only-skill — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

examples/acp-agent/tests/snapshots/skill-load/workspace/.dsh/skills/model-only-skill/SKILL.md · 8 lines

What it actually says

Follow these model-only snapshot instructions.

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. 2d ago First seen · 8 lines · 16 tokens per session scan A 31e6bdfb0801

Subscribe to this mod's changes

model-only-skill is a skill published in the GitHub repository whitelonng/dshcode (553 stars, last pushed 3d ago), licensed MIT. It adds 16 tokens to every session and 36 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to model-only-skill, differing in 0 lines, and is treated as a copy.

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