Summary
Pulls current conditions and weekly forecasts from OpenMeteo's free weather API and surfaces them through MCP tools. You get temperature, precipitation, wind, and standard meteorological data for any location you can geocode. The x402 micropayment integration means queries cost fractions of a cent, charged through the Klymax network. Reach for this when you need Claude to check weather as part of trip planning, scheduling decisions, or any workflow where forecast data informs the next step. The repository is minimal, no readme or documentation visible, so expect to read the source or test the tools directly to see exactly what parameters and responses you're working with.
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one prompt install →Weather API
Current weather and 7-day forecast -- temperature, humidity, wind, precipitation. Any location worldwide. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"weather-api": {
"url": "https://weather-api.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://weather-api.api.klymax402.com/api/weather" \
-H "Content-Type: application/json" \
-d '{}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
| Tool | Method | Path | Price | Description |
|---|---|---|---|---|
data_get_weather | POST | /api/weather | $0.003 | Get current weather and forecast for a location |
data_get_weather
Use this when you need current weather conditions or a 7-day forecast for any location. Returns weather data in JSON.
Parameters
| Name | Type | Required | Description |
|---|---|---|---|
latitude | number | no | Latitude (-90 to 90) |
longitude | number | no | Longitude (-180 to 180) |
city | string | no | City name (alternative to lat/lon, uses geocoding) |
Example response:
{"location":{"city":"Paris","country":"France","latitude":48.85,"longitude":2.35},"current":{"temperature":18.5,"humidity":62,"windSpeed":12,"precipitation":0,"weatherCode":"partly_cloudy"},"forecast":[{"date":"2026-04-14","tempMin":12,"tempMax":20,"precipitation":0.2}]}
When to use: travel planning, outdoor event scheduling, agriculture monitoring, logistics planning, and building weather-aware applications.
Not for: timezone info (use utility_convert_timezone), stock data (use finance_get_stock_price).
Example agent prompts
- "Current weather conditions or a 7-day forecast for any location"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT
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Plug Mailtrap into your AI workflow and let it handle the email.
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Install now →Make coding agent sessions - Searchable, Shareable, Vendor-neutral & Scored.
Try For Free →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →