Maritime Navigation API

Everything to connect is in one public repository: the OpenAPI specification, the data models, Python and JavaScript clients, an MCP server for Claude, Cursor, VS Code, Windsurf and Zed, and a GitHub Action that checks a route against the warnings in force. The endpoints stay the ones below; the kit is the way in.

• Editors and agents: add the MCP server and ask in plain words; the tools are search_warnings, warnings_near, route_check, navareas and feeds.
• Code: python/sealagom.py and js/sealagom.mjs, no dependencies beyond requests or fetch; generate any other language from openapi.yaml.
• No-code and agents: import sealagom.com/openapi.json into n8n, Make, Zapier, Pipedream, Postman, ChatGPT actions or LangChain. Send the key as X-API-Token or Authorization: Bearer.
• Routes: POST /api/v2/route/ with a route file or waypoints, or the drop link /api/v2/drop/<key>/route/ for tools that can only POST a file.
• Sky view: GET /api/v2/sky/link/?vessel= (or mmsi, warning and region, port, locode, lat and lon) gives a ready link that stands there in the sky view; POST /api/v2/sky/route/ takes a route and gives its sky link, drawn on the sea, with the RTZ and GPX. Section 20 of the README has the calls. Not for navigation.
• CI: the Action fails a build when a critical warning lies on a route kept in the repository.
• Scripts and agents paying for themselves: POST /api/agent/checkout/, crypto, the key once paid (in the profile when the e-mail already has an account).

API v2 menggunakan token, paket dan pencatatan permintaan yang sama seperti v1. Semua yang berada di bawah /api/v1/ tetap bekerja persis seperti sebelumnya, sehingga integrasi yang ada tidak perlu diubah. v2 menambahkan:

• Satu daftar semua peringatan: GET /api/v2/messages/, NAVAREA dan coastal bersama, terbaru terlebih dahulu, setiap pesan dengan wilayah, negara dan status arsipnya.
• Filter pesan pada endpoint wilayah: /api/v2/navarea/ and /api/v2/coastal/ menjawab seperti v1 dan juga menerapkan date_from, date_to, keyword and has_coordinates ke pesan yang mereka kembalikan.
• Pengaturan disimpan pada setiap token: pilih token di Profile > API > API v2 builder, buat respons dengan menu dan pratinjau langsung, lalu simpan. Setiap panggilan /api/v2/ dengan token itu mengembalikan bentuk tersebut; panggilan /api/v1/ mengabaikan pengaturan yang disimpan dan menanggapi persis seperti sebelumnya.
• prompt filter (Full API):deskripsikan peringatan yang harus dikembalikan oleh token dengan kata-kata Anda sendiri, misalnya "only space debris warnings around the USA".
• Integrate: the kit on GitHub (OpenAPI spec, clients, MCP server, Action) is the way in; a README.md per token, with its settings, plan and every parameter and field, is there for any program that wants one file.
• Settings file:instead of ticking options, ask LagoPal (with the README) for a settings file: a small JSON file with the token's endpoint, parameters and prompt. Load it on Profile > API (Load settings file); it fills the builder so you can check the live preview before saving. Download settings file gives the current settings in the same form. JSON Schema: /api/public/api-settings-schema/.

GET /api/v2/messages/

Bidang atau filter yang tidak termasuk dalam paket Anda dibiarkan keluar dan tercantum dalam meta.warnings, tidak pernah menjadi error.

content adalah teks seperti yang disiarkan; content_en is the English text (the official English version or a machine translation) for sources that broadcast in another language, such as China or Turkey, and source_language menamai bahasa aslinya.

The US Coast Guard Local Notices to Mariners (10 distrik, diperbarui mingguan) adalah wilayah pesisir berjudul US Coast Guard LNM, negara US. They are not analysed, so their automatic fields are empty; each district also has one message, number LNMxx-DISCREPANCIES, mencantumkan bantu navigasinya dengan ketidaksesuaian.

curl "https://www.sealagom.com/api/v2/messages/?country=France&include_coordinates=true&include_ai_analysis=true" \
  -H "X-API-Token: YOUR_API_TOKEN"

{
  "count": 42,
  "page": 1,
  "page_size": 50,
  "next": null,
  "previous": null,
  "results": [
    {
      "scope": "coastal",
      "region_id": 57,
      "region_title": "FRANCE Atlantic",
      "country": "France",
      "is_archived": false,
      "archived_on": null,
      "id": 90211,
      "number": "AVURNAV 1234/26",
      "content": "BAY OF BISCAY. DRIFTING BUOY ...",
      "content_en": "BAY OF BISCAY. DRIFTING BUOY ...",
      "source_language": "en",
      "added_on": "2026-09-27T08:10:00Z",
      "coordinates": ["45-10.0N 002-05.0W"],
      "ai_analysis": { "headline": "...", "severity": "moderate", "valid_until": null }
    }
  ]
}

Pengaturan yang disimpan pada token

• Satu token, satu bentuk: each token keeps its own endpoint and parameters. Need a second shape (say France coastal with coordinates, and a worldwide feed)? Create a second token.
• Setiap opsi ditampilkan, Termasuk yang Full API, beserta paket yang diperlukan masing-masing. Menyimpan membutuhkan paket API aktif.
• URL menang: setiap parameter yang Anda letakkan di URL menggantikan nilai tersimpan untuk panggilan itu; ?settings=off membuat panggilan biasa.
• Periode relatif: "30 hari terakhir" mengirimkan date_from sebagai hari ini dikurangi 30 hari pada setiap panggilan.
• Respons membawa sebuah X-API-Token-Settings header yang menamakan token yang pengaturannya diterapkan.

Ice feed: GET /api/v2/ice/

• Every warning about ice at sea, from NAVAREA, coastal and NAVTEX sources: icebergs and iceberg limits, sea ice, ice edge, vessel icing and freezing spray, ice reports, icebreaker operations and ice navigation rules. An model reads each warning that mentions ice and keeps only those really about it, with its kind in ice.type.
• Positions, shapes (iceberg limit lines, ice areas) and the analysis are included by default. ?output=geojson mengembalikan sebuah GeoJSON FeatureCollection, satu feature per bentuk, siap untuk pemeriksaan rute dan overlay pada peta.
• ice_type mempersempitnya: iceberg, sea_ice, ice_edge, icing, ice_report, icebreaker, ice_navigation, other_ice (ulang atau pisahkan dengan koma). Setiap parameter /api/v2/messages/ juga berfungsi, dan /api/v2/messages/?topic=ice adalah feed yang sama.
• Rencana Full API, atau lisensi feed es (tahunan, ditagihkan): hubungi kami.

curl "https://www.sealagom.com/api/v2/ice/?output=geojson&ice_type=iceberg,ice_edge" -H "X-API-Token: YOUR_API_TOKEN"

Themed feeds: GET /api/v2/feeds/<feed>/

• Ready-made feeds built from the category the analysis gives every warning: military exercises and firing, rocket launches and space debris, cable and pipeline work, offshore works and rigs, surveys, wrecks and drifting hazards, aids to navigation, search and rescue, security and restricted areas.
• Same output as the ice feed: positions, shapes and the analysis by default, the category in feed.category, ?output=geojson untuk sebuah FeatureCollection dan ?category=untuk menyimpan hanya beberapa kategori dari sebuah feed. Setiap parameter /api/v2/messages/ juga berfungsi, dan /api/v2/messages/?topic=military adalah feed yang sama.
• Only warnings with an analysis are included. GET /api/v2/feeds/ (tidak perlu token) mencantumkan setiap feed dengan berapa banyak peringatannya yang sedang berlaku.
• Rencana Full API, atau lisensi feed untuk satu feed (tahunan, ditagihkan): hubungi kami.
• Free and without a token, for feed readers and scripts: RSS at /feeds/warnings.xml, /feeds/navarea/<id>.xml and /feeds/coastal/<id>.xml; the same three as Atom (.atom) and JSON Feed 1.1 (.json); plain text at /feeds/warnings.txt. The newest 100 warnings, text only, a warning keeps its id when it is updated. Region pages carry the feed links in their head, so a reader finds the feed from the page address.

Memuat feed…

curl "https://www.sealagom.com/api/v2/feeds/military/?output=geojson&navarea_id=3" -H "X-API-Token: YOUR_API_TOKEN"

prompt filter

• Write what you want in plain words on the token (Full API plan). When you save, a model checks every warning in force against it; each new warning is checked within about 10 minutes of arriving.
• /api/v2/messages/ panggilan dengan token itu kemudian hanya mengembalikan peringatan yang cocok. Sebuah peringatan yang cocok saat masih berlaku tetap cocok setelah diarsipkan.
• Respons menambahkan meta.prompt_filter dengan prompt, statusnya (matching tepat setelah menyimpan, ready sesudahnya) dan berapa banyak peringatan yang cocok. ?prompt_filter=off melewatkannya untuk satu panggilan.
• The filter can miss or over-include a warning. Use it to narrow a feed, not as the only safety check; the official broadcast stays the authority.

# Token with saved settings: nothing else needed
curl "https://www.sealagom.com/api/v2/messages/" -H "X-API-Token: YOUR_API_TOKEN"

# Same token, override the period for one call
curl "https://www.sealagom.com/api/v2/messages/?date_from=2026-09-01" -H "X-API-Token: YOUR_API_TOKEN"

# Token with the prompt "only space debris warnings around the USA"
{
  "count": 3,
  "results": [ ... ],
  "meta": {
    "prompt_filter": {
      "prompt": "only space debris warnings around the USA",
      "status": "ready",
      "matched": 3
    }
  }
}