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.
npx skills add vaisala-xweather/xweather-agent-skills --skill mapsglgit clone --depth 1 https://github.com/vaisala-xweather/xweather-agent-skillsWrote 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.
[](https://agentmods.dev/skills/vaisala-xweather/xweather-agent-skills/mapsgl)<a href="https://agentmods.dev/skills/vaisala-xweather/xweather-agent-skills/mapsgl"><img src="https://agentmods.dev/badge/skills/vaisala-xweather/xweather-agent-skills/mapsgl/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.
<a href="https://agentmods.dev/skills/vaisala-xweather/xweather-agent-skills/mapsgl"><img src="https://agentmods.dev/badge/skills/vaisala-xweather/xweather-agent-skills/mapsgl.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00182 | $0.09315 |
| Opus 5 | $0.00091 | $0.04658 |
| Sonnet 5 | $0.00036 | $0.01863 |
| Haiku 4.5 | $0.00018 | $0.00932 |
Grade A, and why
mapsgl 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 8d 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 -s https://www.xweather.com/docs/api/releases/versions \ How it starts
The opening of the file, as written. The whole thing — 713 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MapsGL JavaScript SDK
The MapsGL JavaScript SDK (@xweather/mapsgl) renders weather and custom map data client-side in
WebGL, layered on top of Mapbox GL, MapLibre GL, Google Maps, or Leaflet. It requires an active
Xweather account with Weather API + Maps access (client id + secret).
This skill is the web-based JavaScript SDK. For a native Swift app on iOS, iPadOS, Mac Catalyst, or visionOS, use
the mapsgl-apple skill instead — a separate SDK with a Swift API (MapboxMapController,
WeatherService.LayerCode), its own install channels, and a smaller layer set. The concepts below
transfer; none of the code does. MapsGL ships for Android as well.
Always qualify the name as the MapsGL JavaScript SDK. Xweather ships an unrelated product simply called the JavaScript SDK (https://www.xweather.com/docs/javascript-sdk), so the bare term is ambiguous. Xweather's own naming for the family is MapsGL, MapsGL iOS, and MapsGL Android; "MapsGL JavaScript SDK" is the unambiguous way to name this one.
How to write MapsGL code examples
Default to a single self-contained HTML file using vanilla JavaScript and the CDN build. One
file the user can save and open in a browser — CDN <script>/<link> tags, a <div> for the map,
and a plain <script> block. No build step, no bundler, no package installs, no framework.
In that form, MapsGL lives on the global aerisweather.mapsgl namespace:
const account = new aerisweather.mapsgl.Account('CLIENT_ID', 'CLIENT_SECRET');
const controller = new aerisweather.mapsgl.MapboxMapController(map, { account });
Look up the current released version before writing any example. Don't reuse a version from memory or from an earlier turn — MapsGL ships often, and a stale pin is the most common thing to go wrong in otherwise-correct example code:
curl -s https://www.xweather.com/docs/api/releases/versions \
| python3 -c 'import json,sys; print(json.load(sys.stdin)["products"]["mapsgl"]["version"])'
What ships with it
9 files 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.
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.
- 8d ago Changed ff9096bace40
- 12d ago First seen · 713 lines · 182 tokens per session scan A 6581f7be3a61
mapsgl is a skill published in the GitHub repository vaisala-xweather/xweather-agent-skills (3 stars, last pushed 11d ago), licensed MIT. It adds 182 tokens to every session and 9,315 once invoked, about $0.0009 per session on Opus 5. 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 2026-08-31.
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