OhMyWind ⛵

Talk to your LLM. Cast off with confidence.

OhMyWind turns any MCP-capable assistant (Claude, Le Chat, Cursor, Goose, Zed, Continue) into a sailing planner. Ask in plain language, anywhere in the world: get a per-leg ETA, a 1‑5 complexity score, and a deep-link to the full plan. On the French Atlantic coast it goes further, swapping the global current model for the SHOM Atlas C2D and MARC PREVIMER atlases. Free, keyless, open source.

ohmywind.fr · MCP endpoint · Changelog · AGPL-3.0 + trademark

[!WARNING] Decision-support tool, not a navigation instrument. OhMyWind does not replace the official marine forecast from your national weather service, up-to-date charts, or the skipper's judgement. Forecast models are sometimes wrong: you remain responsible for your passage.

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Try it in 30 seconds

Claude: add it from the connector directory, in one click. Any other MCP client:

1. Open your MCP client and add the endpoint:

https://mcp.ohmywind.fr/mcp

2. Ask, in your own words:

"Demain matin, Marseille → Porquerolles, sur un Sun Odyssey 36. Bonne idée ? Combien de temps et c'est tendu comment ?"

3. Your assistant calls the OhMyWind tools and answers in plain language. On hosts that support the MCP Apps spec (Claude, Claude Desktop, ChatGPT, VS Code Copilot, Goose, Postman, MCPJam) you also get a live, interactive widget: the ohmywind.fr plan view rendered inline. On hosts that don't (Cursor, Le Chat, terminal), the assistant hands you the same plan as an ohmywind.fr deep-link. No account. No API key. No credit card.

First time with MCP? It takes 2 minutes. Pick your client on modelcontextprotocol.io/clients, then follow the remote-server quickstart. Claude Desktop users can start with the user quickstart. In Le Chat, add it under Connectors → Add connector → Custom MCP connector and paste the endpoint above.

If your client only speaks stdio

Some hosts cannot reach a remote MCP server directly yet. Bridge it with mcp-remote, which runs locally and forwards to the endpoint:

{
  "mcpServers": {
    "ohmywind": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.ohmywind.fr/mcp"]
    }
  }
}

Nothing else to configure: no account, no API key, no OAuth, no credit card. A client that asks you for credentials is guessing rather than reading the server, and you can leave those fields empty.

Ask it something real

Three prompts, each exercising a different tool:

• "Quels bateaux tu connais ? J'ai un First 27." maps your boat to a polar archetype. The assistant chooses from the descriptions; there is no server-side lookup table.
• "Le vent au cap Sicié samedi après-midi ?" returns wind and sea at one point, AROME first, in knots.
• "Meilleur créneau cette semaine pour Marseille → Porquerolles ?" walks every hourly departure up to 14 days out and compares them in one call.

Why OhMyWind

🆓 Free, keyless	Wind & sea via Open-Meteo (CC BY 4.0). No account, no API key.
🌍 Works anywhere	Global models (ECMWF, GFS) cover any coast. Over France, AROME 1.3 km takes over and catches thermals, mistral, tramontane.
⛵ Boat-aware	Eight archetypes from a 16 ft sail-and-oar dinghy and 20 ft trailer-cruisers to bluewater 50-footers, real polars, an efficiency parameter for trim and crew level.
🗓️ Window-aware	One call sweeps a 14-day departure range and lets your LLM pick the calmest weekend slot, no math by hand.
🔌 Client-agnostic	One HTTP MCP endpoint. Works in Claude Desktop, Le Chat, Cursor, Goose, Zed, Continue, …
🖼️ Rich on supporting hosts	On Claude / ChatGPT / VS Code Copilot / Goose, an interactive widget renders inline via MCP Apps. Other hosts fall back to a clean text summary + deep-link.
🛠️ Open source, AGPL	Self-host on Fly, Modal, or your own VPS: mcp-core is deployment-agnostic. The HF Space is one wrapper among many. Fork it under your own name and icons, see TRADEMARK.md.

What the LLM sees

Four MCP tools, all async, all keyless:

This is the beginning of the README. Read the rest at the original. Read the full README ↗