NestDaddy

Flat Earth Science

org.flatearthscience/flatearthscience-org · v1.0.1

Earth curvature, horizon, flight, Sun and daylight calculators plus tested flat-earth claims.

Connect Remote server

Terminal
claude mcp add --transport http flatearthscience-org https://flatearthscience.org/api/mcp
~/.cursor/mcp.json
{
  "mcpServers": {
    "flatearthscience-org": {
      "url": "https://flatearthscience.org/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "flatearthscience-org": {
      "type": "http",
      "url": "https://flatearthscience.org/api/mcp"
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://flatearthscience.org/api/mcp

Tools 8 found in our last check

  • calculate_curvature

    Calculates how much of a distant target the Earth's curvature hides, from the surface distance, the observer's eye height, the target's height and an assumed refraction coefficient. Returns the hidden and visible height, the tangent-plane drop, the horizon distance and dip, the…

  • get_horizon_distance

    Gives the distance to the horizon from an eye height above a smooth sphere, and how far a taller object such as a mast stays in straight sight. Returns the observer's horizon distance, the range added by the target height and the maximum shared sightline.

  • compare_flat_map_distance

    Compares the distance between two cities on a north-polar flat-Earth map with their great-circle distance over a sphere. Returns both distances and the factor by which the map stretches or shrinks the pair.

  • get_flight_distance

    Calculates the great-circle distance between two places in kilometres, miles and nautical miles, with the initial and final compass bearings. Each end is one of the website's 20 cities or a latitude and longitude.

  • get_sun_position

    Calculates the Sun's altitude and compass bearing at a place, date and UTC time, with the shadow of a 1 m upright and the day's sunrise and sunset in UTC. A place is one of the website's 20 cities or a latitude and longitude; without a date and time the result is for the current…

  • get_daylight_hours

    Calculates the length of daylight at a place on a date, with sunrise and sunset in UTC, for the UTC day from midnight to midnight. A place is one of the website's 20 cities or a latitude with an optional longitude.

  • compare_true_size

    Shows how much a Mercator map distorts a country's area, from its real area and the latitude it is drawn at. Returns the real area, the area multiplier at the country's own latitude and at a chosen latitude, and the size it appears at each. Covers the nine countries and regions…

  • find_claims

    Searches the website's tested claims and flat-earth investigations, or returns one by id. Each result gives the claim, the verdict, the key evidence and the link to its page; an empty query lists all of them.

Details

Endpointhttps://flatearthscience.org/api/mcp (Streamable HTTP)
First published11 Nov 2026
Last updated11 Nov 2026
Registry nameorg.flatearthscience/flatearthscience-org

More developer tools servers See all

Listing data from the official MCP registry. Status and tools from NestDaddy's daily check. Browse all MCP servers.