/weather
Get current weather and forecasts (no API key required).
$ npx -y skills add volcengine/openviking --skill weather --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.Auto-invocation is when the right skill fires by itself at the right moment, driven by a FLOW.md router and a hook, instead of you invoking it by name. It is the difference between a skill being installed and a skill actually getting used.Read the full definition →
- You can call itInvoke it directly when you want it.
- Slash command
/weather
Context preview
The summary Claude sees to decide when to auto-load this skill.
Get current weather and forecasts (no API key required).
SKILL.md
weather.SKILL.mdname: weather
description: Get current weather and forecasts (no API key required).
homepage: https://wttr.in/:help
metadata: {"vikingbot":{"emoji":"🌤️","requires":{"bins":["curl"]}}}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¤t_weather=true"
Find coordinates for a city, then query. Returns JSON with temp, windspeed, weathercode.
Docs: https://open-meteo.com/en/docs
Self-evolving Context Database for AI Agents. Unify Agent Memory, Knowledge RAG and Skills.
Other skills on openviking.
- /cron
Schedule reminders and recurring tasks.
Open skill - /github-proxy
GitHub 国内访问加速 skill,使用 githubproxy.cc 代理加速 GitHub 仓库克隆、文件下载、Raw 文件访问等操作。使用场景:(1) 需要 git clone GitHub 仓库时加速,(2) 下载 GitHub Release 文件、Raw 文件、Archive 压缩包时加速,(3) 任何需要访问 GitHub 资源但速度慢的场景
Open skill - /github
Interact with GitHub using the `gh` CLI. Use `gh issue`, `gh pr`, `gh run`, and `gh api` for issues, PRs, CI runs, and advanced queries.
Open skill - /opencode
Monitor and manage your OpenCode tasks using helper scripts.
Open skill - /skill-creator
Create or update AgentSkills. Use when designing, structuring, or packaging skills with scripts, references, and assets.
Open skill - /summarize
Summarize or extract text/transcripts from URLs, podcasts, and local files (great fallback for “transcribe this YouTube/video”).
Open skill

