Nausika MCP server

• Registry nameapp.nausika/mcpverified in the MCP registry

The registry name sits under nausika.app. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-24
• Tools19
• Server calls itselfnausika-mcp-server
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-24 the server answered initialize and tools/list without a sign-in. First answer in 523 ms.

• Its tools do every use case we checked: plan a sea-aware passage between two coordinates; check marine forecasts and tides for a leg.
• Checked on 3 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 3 so far
• What an agent can do with it2 of 2 use cases
• Use1 GitHub stars
• Answeredmeasuring3 of the 7 daily checks it takes to print a share
• Median first answer533 ms
• Space in an agent's context≈ 9,204 tokensthe definitions of all its tools (19), which an agent carries on every turn
• Tool definitionsA · 100 of 100
• Typed results19 of 19 toolsdeclared outputSchema: results come typed, read once

• Every tool passes all six checks.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• nausika_marine_forecast

  Marine + atmospheric forecast at (latitude, longitude in decimal degrees). Returns waves, swell, currents, SST, wind, gusts, pressure, weather_code, visibility, precipitation, temperature, UV. Directions FROM. Presets: now, today…

• nausika_seasonal_forecast

  Fetch 1-7 month ECMWF SEAS5 seasonal forecast for one point, anywhere in the world. Returns ensemble-mean DAILY + MONTHLY aggregates of wind, SST, temperature, precipitation, cloud cover (extend via variables[]). NO waves — chain…

• nausika_tides

  Tide predictions or station discovery at a coordinate (latitude, longitude). Default: predictions from the nearest NOAA station; outside US waters falls back to a global modeled-tide source (forecast horizon ~15 days — longer windows are…

• nausika_search_places

  Nautical place search by proximity in the curated areas (Mediterranean, European Atlantic + Canaries, Caribbean, South-East Asia). latitude+longitude are ALWAYS required — this is not a standalone text search. 'query' is only a name…

• nausika_get_place

  Fetch full detail for a single place given its 'id'. Accepts either a full UUID or the 8-char [xxxxxxxx] short-id shown by nausika_search_places. Returns canonical attributes (name/coords/category/type), localized i18n names+descriptions…

• nausika_sea_route

  Maritime routing via pgRouting Dijkstra on the MARNET sea-lane graph (detailed coastal routing in the curated areas — Mediterranean, European Atlantic + Canaries, Caribbean, South-East Asia; main ocean lanes elsewhere; errors when an…

• nausika_calculator

  Evaluate a math expression and return the numeric result. Useful for fuel, range/autonomy, unit conversions, and ad-hoc arithmetic. Supported (exhaustive): +, -, *, /, ^, %, parentheses, sqrt(), abs(), ceil(), floor(), round(), sin()…

• nausika_geocode

  Resolve a place 'query' to coordinates (forward) or find nearest places to 'latitude'+'longitude' (reverse). Curated DB of the covered sea areas (Mediterranean, European Atlantic + Canaries, Caribbean, South-East Asia); forward falls back…

• nausika_describe_place_schema

  Returns the expected attributes for a given place 'type' (the only input parameter: marina, port, bay, fuel_station, city, island, etc.). Useful to understand what fields are available on places of that type.

• nausika_is_water

  Check whether a coordinate (latitude, longitude in decimal degrees) is on water or land, and how far it is from the coast. Returns: - is_water: boolean (true if over sea, false if over land) - distance_to_coast_m: meters to the nearest…

• nausika_convert_coordinates

  Convert nautical coordinates between decimal degrees, DMS, and DM. Inputs: latitude, longitude — each accepts decimal (44.4), DMS ("44°24'00\"N"), or DM ("44°24.0'N"). Returns all three formats plus input_format (detected per-axis)…

• nausika_manage_boat_profile

  Manage boat profile (multi-boat per account, keyed by name). Inputs: action, name, type, loa_m, beam_m, draft_m, displacement_kg, engine_type, engine_hp, fuel_capacity_l, motor_consumption_l_per_h, water_capacity_l, cruising_speed_kts…

• nausika_get_boat_profile

  Get your saved boat profile(s). Omit name for the default boat, or use name="*" to list all boats. Tip: use boat speed/consumption with nausika_sea_route and nausika_calculator for trip planning.

• nausika_manage_favorite

  Add or remove a place from your favorites list. Examples: - Add: action="add", place_id="a1b2c3d4", note="Great anchorage for overnight" - Remove: action="remove", place_id="a1b2c3d4" place_id accepts the 8-char [xxxxxxxx] shown by…

• nausika_get_favorites

  List your favorite places with details and personal notes. Ordered by most recently added. Inputs: limit, offset. Tip: use place coordinates with nausika_sea_route or nausika_marine_forecast for trip planning.

• nausika_manage_rating

  Rate a place (1-5 stars) with an optional private comment. One rating per user per place. Examples: - Rate: action="upsert", place_id="a1b2c3d4", score=4, comment="Clean facilities" - Delete: action="delete", place_id="a1b2c3d4" place_id…

• nausika_get_ratings

  View ratings for a place (aggregate + your own) or list all your ratings. Inputs: place_id, my_only, limit, offset. Examples: - Place ratings: place_id="a1b2c3d4" (8-char short-id or full UUID) - My ratings: my_only=true Tip: ratings are…

• nausika_manage_route

  Save a sailing route or multi-day itinerary; legs may link to places. Typical flow: compute legs with nausika_sea_route, then save here. Examples: - Single: action="upsert", name="Genova → Bastia", route_type="single", legs=[{...}]…

• nausika_get_routes

  Look up your saved sailing-route library: direct fetch by id, or paginated search by name fragment via query, with limit and offset for pagination. Examples: - List all (defaults limit=20, offset=0): (no params) - Detail by id…