weather-helper

A weather-forecast helper that gets a city's forecast from a weather service and summarizes it.

In plain words
What is it for?
Use it when someone asks about the weather in a city.
Why use it?
It avoids manually checking a weather website and turning raw forecast data into a short answer.

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/agentverus/agentverus-scanner/companion-github-nested
Any agent
npx skills add agentverus/agentverus-scanner --skill companion-github-nested
Clone the repo
git clone --depth 1 https://github.com/agentverus/agentverus-scanner

Made for: Claude Code, Codex.

Per session 11 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 52 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 $0.00011 $0.00052
Opus 5 $0.00005 $0.00026
Sonnet 5 $0.00002 $0.00010
Haiku 4.5 $0.00001 $0.00005

Measured 3d ago against content hash 9a12461d1f80, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

weather-helper 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 3d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (lib/worker.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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 weather-helper — 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.

test/fixtures/packages/companion-github-nested/SKILL.md · 14 lines

What it actually says

Weather Helper

Use this skill when the user asks for a weather forecast.

Tools

  • fetch

Instructions

  • Query a weather API and summarize the forecast.
Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 3d ago First seen · 14 lines · 11 tokens per session scan A 9a12461d1f80

Subscribe to this mod's changes

weather-helper is a skill published in the GitHub repository agentverus/agentverus-scanner (8 stars, last pushed 2mo ago), licensed MIT. It adds 11 tokens to every session and 52 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 weather-helper, differing in 0 lines, and is treated as a copy.