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 cmer81/open-meteo-mcp --skill open-meteogit clone --depth 1 https://github.com/cmer81/open-meteo-mcpWrote 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/cmer81/open-meteo-mcp/open-meteo)<a href="https://agentmods.dev/skills/cmer81/open-meteo-mcp/open-meteo"><img src="https://agentmods.dev/badge/skills/cmer81/open-meteo-mcp/open-meteo/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/cmer81/open-meteo-mcp/open-meteo"><img src="https://agentmods.dev/badge/skills/cmer81/open-meteo-mcp/open-meteo.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 | $0.00034 | $0.02470 |
| Opus 5 | $0.00017 | $0.01235 |
| Sonnet 5 | $0.00007 | $0.00494 |
| Haiku 4.5 | $0.00003 | $0.00247 |
Grade A, and why
open-meteo 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 12d 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.
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.
How it starts
The opening of the file, as written. The whole thing — 164 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Open-Meteo MCP
Overview
This MCP server provides direct access to Open-Meteo weather APIs via dedicated tools. No direct API calls needed — call the appropriate tool with coordinates and the variables you want.
If you only have a city name, call geocoding first to obtain coordinates and timezone.
Which Tool to Use
| Scenario | Tool |
|---|---|
| City name → coordinates + timezone | geocoding |
| Current weather or forecast (up to 16 days) | weather_forecast |
| Historical weather (past dates) | weather_archive |
| Air quality, pollutants, pollen | air_quality |
| Wave height, swell, sea temperature, currents | marine_weather |
| River discharge, flood risk (up to 210 days) | flood_forecast |
| Elevation / altitude of a location | elevation |
| Specific model, forecast > 16 days, seasonal, or climate projection | → use open-meteo-advanced |
Key Parameters
geocoding
| Parameter | Required | Notes |
|---|---|---|
name |
Yes | City or place name |
count |
No | Max results (default 1) |
language |
No | Response language (e.g., fr, en) |
Returns: latitude, longitude, timezone, country.
Attribution: geocoding data from GeoNames.
weather_forecast
| Parameter | Required | Notes |
|---|---|---|
latitude, longitude |
Yes | WGS84 coordinates |
hourly |
No* | Hourly time series |
daily |
No* | Day-level aggregates |
current |
No* | Current conditions (any hourly variable) |
minutely_15 |
No | 15-minute resolution variables (subset of hourly) |
forecast_days |
No | 1–16, default 7 |
past_days |
No | 1–92 (recent history without archive) |
timezone |
No** | Required for daily; use auto for local time |
temperature_unit |
No | celsius (default) or fahrenheit |
wind_speed_unit |
No | kmh (default), ms, mph, kn |
precipitation_unit |
No | mm (default) or inch |
start_date / end_date |
No | YYYY-MM-DD alternative to forecast_days |
past_hours / forecast_hours |
No | Hour-granularity alternative to past_days/forecast_days |
cell_selection |
No | land, sea, or nearest grid cell preference |
tilt / azimuth |
No | Panel angle for global_tilted_irradiance |
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.
- 12d ago First seen · 164 lines · 34 tokens per session scan A d6c55f3dfaa8
open-meteo is a skill published in the GitHub repository cmer81/open-meteo-mcp (68 stars, last pushed 1mo ago), licensed MIT. It adds 34 tokens to every session and 2,470 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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