mcp · France

ohmywind

MCP server + web app for sailing passage planning, worldwide: per-leg ETA, 1-5 complexity score, multi-model winds (AROME 1.3 km in France). SHOM C2D and MARC PREVIMER tidal atlases on the French Atlantic coast. Free, keyless, open source.

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What's in it

Data offered docs-verified: wind forecast · sea state (Hs max) · per-leg ETA · 1-5 passage complexity score · tidal currents on French Atlantic coast (SHOM C2D, MARC PREVIMER)
Coverage docs-verified: Worldwide via global models; AROME 1.3 km over France; SHOM/MARC currents on French Atlantic coast · Forecast horizon up to 16 days (GFS fallback); compare mode walks up to 14 days of hourly departures
Resolution docs-verified: AROME 1.3 km over France; ECMWF IFS 0.25° beyond AROME horizon; routes split into ~10 nm sub-segments by default
Formats docs-verified: MCP HTTP (remote endpoint) · MCP stdio (via mcp-remote bridge)
Access docs-verified: Free; no account, no API key, no OAuth, no credit card; AGPL-3.0 open-source licence

Useful for

Use cases llm-inferred: Marine survey vessel transit planning: ETA and complexity score for coastal legs · Sea-state (Hs) and wind screening of weather windows for coastal works mobilisation · Tidal current check on French Atlantic passes for survey boat access
Audience llm-inferred: marine survey planners · coastal engineers · hydrographic surveyors · sailing and passage planners

Limitations

Constraints docs-verified: Decision-support only; does not replace the official marine forecast, up-to-date charts or skipper judgement · AROME horizon is 48 h; longer passages fall back to coarser global models · Tidal currents modelled from SHOM/MARC only on French Atlantic coast; global SMOC elsewhere · Tides and currents ignored in the Mediterranean · No automatic routing optimisation; no coastal acceleration zones, so intermediate waypoints are needed · Wave derate is opt-in and disabled by default · SHOM/MARC atlases are private; self-hosting without the read token falls back to the global current model

Licence: AGPL-3.0
Authentication: OAuth mentioned in README (auto-extracted)
GitHub stars: 11
Last commit: 14/10/2026
Last successful page check: 14/10/2026
Page health: healthy
Package: Not recorded
Verification: Not independently verified

Auto-extracted, unverified fields: tools, install, auth. Check upstream documentation.

Provenance & evidence

Daily discovery 2026-10-15: GitHub search; verified via GitHub API. Tools/install/auth auto-extracted from README.

Metadata observed 14/10/2026 · daily-2026-10-15 (github-search)