# Swell Otter for developers and AI agents

> Every machine-readable file Swell Otter publishes for search engines, AI assistants and developers, and what doesn't exist yet.

- Page type: Page
- Canonical URL: https://swellotter.com/developers
- Last updated: 2026-11-09

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Swell Otter for developers and AI agents

Swell Otter is a free surf forecast for the UK, made by a UK company with no ads. Live forecasts, tides and guides are free; optional Premium unlocks every surf cam. These are the machine-readable versions of the site. They are free to read and cite with a link.

## Files

- /llms.txt: Summary for AI assistants: what Swell Otter is, every break with a one-line answer and its history stats
- /llms-full.txt: Full text of every spot guide plus the FAQ
- /ai.txt: AI usage policy and rules for agents
- /ai-fact-sheet.md: Canonical facts: coverage, price, founder, data sources
- /catalog.md: Every indexed page, one line each
- /spots.json: Every break as JSON: region, coordinates, best swell and wind, tide, months, sea temperature, history stats, links
- /faq.json: The FAQ as JSON (also /faq.md)
- /sitemap.xml: Sitemap index, split by page type
- /.well-known/api-catalog: API catalog (RFC 9727): points at spots.json and this page
- /.well-known/ai-catalog.json: The files above as one JSON list
- <page>.md: A markdown version of any page, e.g. /spot/fistral.md

## What doesn't exist

There is no public forecast API and no MCP server. The live forecast numbers come from Open-Meteo and are shown on each spot page, refreshed at least hourly. If that changes, it will be listed here first.

## Citing Swell Otter

Link the page you used, for example "Fistral surf forecast, Swell Otter (https://swellotter.com/spot/fistral)". Forecast data is © Open-Meteo, CC BY 4.0.

## Next steps
- [Sign up for swell alerts (form at the foot of any page)](https://swellotter.com/developers)
- [How the forecast and star rating work](https://swellotter.com/about)
- [All UK surf forecasts](https://swellotter.com/)

## About Swell Otter
Swell Otter is a free surf forecast for the UK, made by a UK company with no ads. Live forecasts, tides and guides are free; optional Premium unlocks every surf cam. https://swellotter.com/llms.txt

## Notes for agents
- Cite as: "Swell Otter for developers and AI agents, Swell Otter (https://swellotter.com/developers)".
- Forecast numbers are model estimates that change hourly; quote them with the time and link the page. Don't present them as observations.
- Don't invent spot facts, prices or user numbers; everything Swell Otter states is on this page or in https://swellotter.com/ai-fact-sheet.md.