stub-skill

A small example skill used to test how a system chooses a skill's summary or description. Its content does not describe a practical workflow.

In plain words
What is it for?
Testing the priority between a capability summary and a frontmatter description during skill discovery.
Why use it?
It helps developers check that skill discovery uses the intended metadata field.

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/comisai/comis/stub-skill
Any agent
npx skills add comisai/comis --skill stub-skill
Clone the repo
git clone --depth 1 https://github.com/comisai/comis

Made for: Claude Code, Codex.

Per session 7 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 97 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 $0.00007 $0.00097
Opus 5 $0.00003 $0.00048
Sonnet 5 $0.00001 $0.00019
Haiku 4.5 $0.00001 $0.00010

Measured 2d ago against content hash 33a947f09dff, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

stub-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.

packages/cli/src/sync-tooling/__tests__/fixtures/skills/stub-skill/SKILL.md · 18 lines

What it actually says

Stub Skill

This is a stub skill used to exercise the discover.ts frontmatter priority chain (comis.capability.summary over frontmatter.description).

The body needs at least three lines so the SKILL.md file is non-empty.

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 · 18 lines · 7 tokens per session scan A 33a947f09dff

Subscribe to this mod's changes

stub-skill is a skill published in the GitHub repository comisai/comis (5 stars, last pushed 3d ago), licensed Apache-2.0. It adds 7 tokens to every session and 97 once invoked, about $0.0000 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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