Start free with 10 AI credits. No credit card required. Pay only for what you use.
Tide predictions, sea-surface temperature, chlorophyll, water depth, live NOAA buoy observations and active marine warnings are free for any coordinates on Earth — no key, no signup, commercial use included. They are served over the MCP server today, with REST to follow.
The pricing below is for AI credits, which pay for SpotCast forecast analysis. Higher-throughput Plus and Pro plans are on the way; until they open, pay-as-you-go AI credits are the only thing to buy.
One AI credit buys one forecast-day — one day of forecast data for one location. It's the simplest way to measure API usage.
Example: A 5-day forecast for Miami uses 5 AI credits. A 3-day forecast for two different locations uses 6 AI credits.
When you call the SpotCast API, you specify a location and a number of days. The cost is the number of days you request, with a 2-credit minimum per SpotCast. Whether you ask for wind, waves, or the full forecast — it's the same price per AI credit.
num_days: 1 — 2 AI credits (minimum)num_days: 5 — 5 AI creditsSpotCast widgets consume AI credits based on their update frequency and the number of days they display. A widget showing a 3-day forecast that updates every 12 hours uses about 6 AI credits per day. You can configure update frequency in your dashboard to control costs.
No subscription is required, and there are no monthly minimums or overage charges. You pre-purchase AI credits and use them at your own pace. Credits don't expire. When your balance runs low, top it up.
If you're building a high-volume application — a charter booking platform, a fishing app, or a marina management system — contact us at support@sealegs.ai for volume pricing, higher rate limits, SLA guarantees, and custom widget branding.
Yes. Every new developer account gets 10 free AI credits with no credit card required. You can use these to test the full API, including SpotCast forecasts, webhooks, and widgets.
No. Create your account and start using the API immediately with your free credits. You only need a payment method when you choose to purchase additional AI credits.
No. Purchased AI credits remain in your account until you use them. There's no expiration date or use-it-or-lose-it policy.
API requests will return an insufficient balance error. Your widgets will continue showing the last cached forecast but won't refresh with new data. Top up your balance in the dashboard to resume service immediately.
Your developer dashboard shows your current balance, usage history, and per-widget consumption. You can also check your balance programmatically via the API.
Each AI credit includes the full AI-analyzed marine forecast: wind speed and direction, wave height and period, an overall conditions classification (excellent/good/fair/poor), and a plain-English summary — all tailored to your specified vessel type and size.
Yes. Start with the free tier or pay-as-you-go, and contact us anytime at support@sealegs.ai to discuss enterprise pricing. We'll work with your existing account — no migration needed.
Get your API key and 10 free AI credits. No credit card required.