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TidesAtlas

by TidesAtlasversion 1.1.1i★ –iRuns in the cloud
Registry namecom.tidesatlas/tides

Install

Overview

Description from the maker (original English)

Worldwide tide times and heights, marine weather, sea temperature, sun and moon for 13,000+ ports.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Other
  • You need to fill in: X-API-Key

Install

Pick the AI app you use, then copy the settings.

Before you install

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http tides https://tidesatlas.com/mcp --header 'X-API-Key: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "tides": {
      "url": "https://tidesatlas.com/mcp",
      "headers": {
        "X-API-Key": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "tides": {
      "type": "http",
      "url": "https://tidesatlas.com/mcp",
      "headers": {
        "X-API-Key": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • X-API-Key secret required HTTP header
    TidesAtlas API key (free at https://tidesatlas.com/en/api/register)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.

  • get_tides

    Get tide predictions (high/low water times and heights) for a port or coordinates. Returns extremes with datetime, height in meters, and type (high/low). Supports 13,000+ stations in 180 countries.

  • search_ports

    Search for tide stations by name or country. Returns port name, slug, coordinates, timezone, country.

  • list_countries

    List all 188 countries that have tide stations, with their station counts and ISO codes.

  • get_weather

    Get weather forecast (temperature, wind, precipitation, UV, conditions) for a port or coordinates. Returns hourly and daily data.

  • get_marine

    Get ocean and wave forecast (wave height, swell, sea state on Douglas scale). Returns hourly and daily data.

  • get_astronomy

    Get sun and moon data: sunrise, sunset, dawn, dusk, day length, moon phase, illumination, moonrise, moonset.

  • get_conditions

    Get unified weather + marine + astronomy data in one call. More efficient than calling each separately.

  • get_history

    Get historical tide predictions and weather data for past dates. Tides up to 365 days, weather up to 90 days.

  • get_observations

    Get real-time sea level observations from REFMAR/SHOM tide gauges (French stations only). Returns 10-minute interval readings.

  • get_radar

    Get rain radar tile URLs for a location. Returns past frames and short-term nowcast frames for map overlays.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain tidesatlas.com (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • ✓ Pass

    Endpoint responds

    Responded in 81 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 10 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 32700 servers in this category
  • Published to the registry more recently than 92% of the other 32700 servers in this category
  • Basic checks equal to or better than 100% of the other 32700 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is TidesAtlas safe?

It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: X-API-Key

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.1) reached the registry 3 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Agent Data Tools: Utilities

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

TidesAtlas API

Worldwide tide predictions, marine forecasts and astronomical data for 13,000+ ports in 180 countries.

Base URL: https://tidesatlas.com/api/v1

Documentation: tidesatlas.com/api/docs

Dashboard: tidesatlas.com/api/dashboard


Features

  • Tide predictions for 13,000+ ports across 180 countries
  • Tidal coefficients (French coefficient scale, 20-120)
  • Weather forecasts — temperature, wind, precipitation, UV index
  • Marine data — wave height, swell, wave direction, sea state
  • Astronomy — sunrise, sunset, moon phase, illumination
  • Multiple datums — LAT, MSL, MLLW, MHW, MHHW, and more
  • Real-time observations for French REFMAR stations

Quick start

  1. Sign up at tidesatlas.com/api/register (50 free credits, no credit card)
  2. Copy your API key from the dashboard
  3. Make your first call:
curl -H "X-API-Key: YOUR_KEY" \

"https://tidesatlas.com/api/v1/tides?port=brest&days=3"

Endpoints

EndpointDescription
GET /tidesHigh & low tide times, heights, and coefficients
GET /portsSearch ports by name, coordinates, or country
GET /countriesList all countries with port counts
GET /weatherWeather forecast (1-7 days)
GET /marineWave & swell forecast (1-7 days)
GET /astronomySunrise, sunset, moon phase
GET /conditionsWeather + marine + astronomy in one call
GET /historyHistorical tide & weather data

Authentication

Pass your API key in the X-API-Key header:

X-API-Key: ta_your_api_key_here

Examples

Full working examples in multiple languages:

  • Python
  • JavaScript / Node.js
  • PHP
  • cURL

Response example

{

"port": { "name": "Brest", "slug": "brest", "country": "France", "region": "Brittany" }, "datum": { "reference": "LAT", "available": ["LAT", "MSL", "MLLW", "MHW", "MLW", "MHHW", "MTL"] }, "extremes": [ { "datetime": "2026-05-13T05:18:00+02:00", "height_m": 6.79, "type": "high" }, { "datetime": "2026-05-13T11:45:00+02:00", "height_m": 0.82, "type": "low" } ] }

Datum conversion

Request heights in any supported reference frame:

# Heights relative to Mean Sea Level

curl -H "X-API-Key: KEY" \ "https://tidesatlas.com/api/v1/tides?port=brest&datum=MSL"

Heights relative to Mean Lower Low Water (US standard)

curl -H "X-API-Key: KEY" \ "https://tidesatlas.com/api/v1/tides?port=seattle&datum=MLLW"

Rate limits

PlanRequestsPrice
Free50 one-time credits$0
Hobby500/day$4.99/mo
Starter1,000/day$9/mo
Pro10,000/day$29/mo
Business50,000/day$79/mo

Rate limit headers are included in every response:

X-RateLimit-Limit: 500

X-RateLimit-Remaining: 347 X-RateLimit-Reset: 1715644800

Data sources

  • Tide predictions: Harmonic analysis using TICON-4 and FES2022 tidal constituents
  • Weather: NOAA GFS via Open-Meteo (CC BY 4.0)
  • Marine: Copernicus Marine / ECMWF via Open-Meteo (CC BY 4.0)
  • Astronomy: Computed from solar/lunar ephemeris

Status

API status page: tidesatlas.com/api/status

Support

License

This repository contains documentation and example code only. The examples are released under the MIT License. The API itself is a commercial service — see Terms of Use.

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