A procedure for fetching current weather for a named city from OpenWeatherMap, a weather-data service, using an API key. It describes the expected temperature, conditions, humidity, and pressure results.

Answering city-weather questions by making an OpenWeatherMap request, reading its response, and handling common errors.

It provides a defined way to request weather data and explains what to report when the key is missing, a city cannot be found, or the service is unavailable.

test-skill — Skill for Claude Code and Codex by joeynyc/skillscore

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.

Any agent

npx skills add joeynyc/skillscore --skill test-skill

Clone the repo

git clone --depth 1 https://github.com/joeynyc/skillscore

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/joeynyc/skillscore/test-skill/github.svg)](https://agentmods.dev/skills/joeynyc/skillscore/test-skill)

Your own site

<a href="https://agentmods.dev/skills/joeynyc/skillscore/test-skill"><img src="https://agentmods.dev/badge/skills/joeynyc/skillscore/test-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/joeynyc/skillscore/test-skill"><img src="https://agentmods.dev/badge/skills/joeynyc/skillscore/test-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 400 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00000	$0.00400
Opus 5.5	$0.00000	$0.00160
Sonnet 5.5	$0.00000	$0.00080
Haiku 4.5	$0.00000	$0.00040

Measured 2mo ago against content hash 9e5e399c1ce5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

test-skill scanned grade A with 1 finding 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 2mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- curl or wget for HTTP requests

test-skill/SKILL.md · 53 lines

What it actually says

Weather Information Fetcher

Fetches current weather data for any city using OpenWeatherMap API.

Dependencies

curl or wget for HTTP requests
OpenWeatherMap API key (free registration at openweathermap.org)
Environment variable: OPENWEATHER_API_KEY

Installation

Sign up for API key at https://openweathermap.org/api
Set environment variable: export OPENWEATHER_API_KEY=your_api_key
Ensure curl is installed: which curl

Usage

When user asks for weather information for a specific city
Extract the city name from the request
Make API call: curl "http://api.openweathermap.org/data/2.5/weather?q=CITY&appid=$OPENWEATHER_API_KEY&units=metric"
Parse the JSON response and format for user
Handle errors gracefully if city not found or API unavailable

Examples

# Example API call
curl "http://api.openweathermap.org/data/2.5/weather?q=London&appid=your_api_key&units=metric"

Expected response includes temperature, description, humidity, and pressure.

Error Handling

No API key: Prompt user to set OPENWEATHER_API_KEY environment variable
City not found: Return "City not found, please check spelling"
API down: Fallback to generic message "Weather service temporarily unavailable"
Network error: Retry once, then inform user of connection issue

Limitations

Requires internet connection
API has rate limits (1000 calls/day for free tier)
Only supports current weather (not forecasts)
City names must be in English

Troubleshooting

If you get "unauthorized" error:

Verify API key is correct
Check if key is activated (can take up to 10 minutes)
Ensure environment variable is set properly

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.

2mo ago First seen · 53 lines · 0 tokens per session scan A 9e5e399c1ce5

Subscribe to this mod's changes

test-skill is a skill published in the GitHub repository joeynyc/skillscore (18 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 400 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Claude Code Evaluation agent-skills ai cli openclaw

test-skill next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
test-skilljoeynyc/skillscore	Skill	18	6mo ago	MIT	A	0	Claude Code, Codex
officecli-pitch-deckiOfficeAI/OfficeCLI	Skill	33k	yesterday	Apache-2.0	A	163	Claude Code, Codex
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officecli-pptxiOfficeAI/OfficeCLI	Skill	33k	yesterday	Apache-2.0	A	106	Claude Code, Codex
officecliiOfficeAI/OfficeCLI	Skill	33k	yesterday	Apache-2.0	A	56	Claude Code, Codex

test-skill