Weather API
Current weather and 7-day forecast for any location. OpenMeteo-powered. x402 micropayment.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport sse weather-api 'https://weather-api.api.klymax402.com/mcp'{
"mcpServers": {
"weather-api": {
"type": "sse",
"url": "https://weather-api.api.klymax402.com/mcp"
}
}
}Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
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 bodyAny 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
Frequently asked questions
What is Weather API?
Current weather and 7-day forecast for any location. OpenMeteo-powered. x402 micropayment.
How do I install Weather API?
It runs as a remote server. In Claude Code: claude mcp add --transport sse weather-api 'https://weather-api.api.klymax402.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Weather API need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Weather API open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains Weather API?
It is published by Br0ski777. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.