weather

A weather lookup tool for current conditions and forecasts by city, airport code, or coordinates. It uses free services that do not require an API key.

In plain words
What is it for?
Use it to check temperature, conditions, humidity, wind, and forecasts for a location, or to retrieve weather data for scripts.
Why use it?
It avoids manually checking a weather website or setting up paid service credentials. It can return either a quick text update or structured JSON for programs.

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/phyagentos/phyagentos-core/weather
Any agent
npx skills add PhyAgentOS/PhyAgentOS-core --skill weather
Clone the repo
git clone --depth 1 https://github.com/PhyAgentOS/PhyAgentOS-core

Made for: Claude Code, Codex.

Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 389 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin 92% 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 $0.00013 $0.00389
Opus 5 $0.00006 $0.00195
Sonnet 5 $0.00003 $0.00078
Haiku 4.5 $0.00001 $0.00039

Measured 2d ago against content hash 27eaa11b73ce, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

weather 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 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.

Makes network callslowCapability

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

metadata: {"PhyAgentOS":{"emoji":"🌤️","requires":{"bins":["curl"]}}}
Origin

This is a copy

92% identical to weather — 3 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.

PhyAgentOS/skills/weather/SKILL.md · 50 lines

What it actually says

Weather

Two free services, no API keys needed.

wttr.in (primary)

Quick one-liner:

curl -s "wttr.in/London?format=3"
# Output: London: ⛅️ +8°C

Compact format:

curl -s "wttr.in/London?format=%l:+%c+%t+%h+%w"
# Output: London: ⛅️ +8°C 71% ↙5km/h

Full forecast:

curl -s "wttr.in/London?T"

Format codes: %c condition · %t temp · %h humidity · %w wind · %l location · %m moon

Tips:

  • URL-encode spaces: wttr.in/New+York
  • Airport codes: wttr.in/JFK
  • Units: ?m (metric) ?u (USCS)
  • Today only: ?1 · Current only: ?0
  • PNG: curl -s "wttr.in/Berlin.png" -o /tmp/weather.png

Open-Meteo (fallback, JSON)

Free, no key, good for programmatic use:

curl -s "https://api.open-meteo.com/v1/forecast?latitude=51.5&longitude=-0.12&current_weather=true"

Find coordinates for a city, then query. Returns JSON with temp, windspeed, weathercode.

Docs: https://open-meteo.com/en/docs

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 · 50 lines · 13 tokens per session scan A 27eaa11b73ce

Subscribe to this mod's changes

weather is a skill published in the GitHub repository PhyAgentOS/PhyAgentOS-core (1,981 stars, last pushed 2d ago), licensed MIT. It adds 13 tokens to every session and 389 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 92% identical to weather, differing in 3 lines, and is treated as a copy.

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