Today, we're thrilled to announce the public launch of the SeaLegs API - a developer-friendly way to integrate AI-powered marine weather forecasts into your applications. Whether you're building a sailing app, marina management system, or any tool that helps people enjoy the water, SeaLegs gives you the data you need.
What's in the API?
The SeaLegs API provides comprehensive marine weather data through a simple REST interface. Here's what you can access:
7-Day Forecasts
Detailed hourly and daily forecasts including wind, waves, temperature, and precipitation.
AI Classifications
Smart daily ratings that tell you at a glance whether conditions are good for boating.
Global Coverage
Forecasts for coastal waters, lakes, and offshore locations worldwide — from Florida to the Mediterranean to Australia.
Multi-Model Data
Synthesized predictions from leading weather models for improved accuracy.
Quick Start
Getting started is easy. First, create your developer account to get an API key. Then make your first request:
curl -X GET "https://api.sealegs.ai/v1/forecast" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d "lat=25.7617" \
-d "lon=-80.1918"You'll receive a JSON response with detailed forecast data:
{
"location": {
"lat": 25.7617,
"lon": -80.1918,
"name": "Miami, FL"
},
"daily": [
{
"date": "2025-11-20",
"classification": "good",
"confidence": 0.87,
"wind_speed_avg": 12,
"wave_height_avg": 2.1,
"summary": "Light winds and moderate seas..."
}
],
"hourly": [...]
}Pricing That Scales With You
We designed our pricing to work for projects of all sizes:
- Pay-as-you-go - Start at just $10 for 200 forecast-day credits
- No monthly minimums - Only pay for what you use
- Volume discounts - Better rates as your usage grows
- Enterprise plans - Custom solutions for high-volume applications
A "forecast-day" is one day of forecast data for one location. So a 7-day forecast uses 7 credits. This simple model makes it easy to predict your costs.
Documentation & Support
We've invested heavily in making SeaLegs easy to integrate:
- Comprehensive docs - Detailed API reference with examples in multiple languages
- Quickstart guides - Get up and running in minutes
- Interactive console - Test API calls directly from your browser
- Email support - Real humans ready to help when you need it
Embeddable Widgets
Don't want to build your own UI? We also offer embeddable SpotCast widgets that you can drop into any website with a single line of code. Display beautiful, responsive marine forecasts without writing any custom frontend code.
What's Next
This launch is just the beginning. Here's what's on our roadmap:
- Webhooks - Get notified when conditions change
- Historical data - Access past forecasts and observations
- Custom alerts - Set thresholds for specific conditions
- More widget styles - Additional visualization options
We're building SeaLegs in close collaboration with our developer community. Have a feature request? We'd love to hear it.
Get Started Today
Ready to bring marine weather intelligence to your application? Here's how to get started:
- Create your free developer account
- Get your API key from the dashboard
- Follow our quickstart guide
- Start building!
We can't wait to see what you create. Welcome to SeaLegs AI for Developers!
- The SeaLegs AI Team