Moon & Star Map MCP

Moon & Star Map provides astronomical data including moon phases, illumination, and star maps for any date and city. It allows users to generate printable vector PDFs and SVGs of night skies, check lunar compatibility between dates, and view moon-phase calendars. The server computes exact moon ages and times using Jean Meeus algorithms.

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Endpoint and access

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Community listingStreamable HTTPNo sign-inEndpoint checked 2026-11-01Published by Zovo

MCP endpoint (Streamable HTTP)

https://sky-keepsake.zovo.one/mcp

Vendor documentation

What you can do with it

Get moon phase, illumination, and age for a specific date
Generate a star map of the sky above a city at a chosen time
Check if two moon phases complete each other
Download printable moon posters as PDF or SVG

Source and maintenance

Community listingRegistry 1.0.0

mcp-registry: io.github.theluckystrike/sky-keepsake@1.0.0 Project website

Protocol and capabilities

Server: sky-keepsake 1.0.0
MCP protocol: 2025-06-18
Tools: 3 advertised
Resources: 1 advertised
Resource templates: 1 advertised
Prompts: Not advertised

Server-advertised capabilities

{
  "tools": {
    "listChanged": true
  },
  "resources": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Moon & Star Map computes the real Moon phase for any date (birthdays, anniversaries, two dates that 'complete' each other, monthly moon calendars) and draws the real night sky above a city at a date and time as a printable star map poster (PDF/SVG). Places are city names, never coordinates. Results are decorative keepsakes, not for navigation.

Tools

3 advertised

generate_star_map — Generate star map

Advertised by the server during the last successful anonymous check.

Advertised read-only

Use this when the user wants a star map or night sky poster for a date and place: the sky over a city on a birthday, wedding, anniversary or the night they met, or the sky tonight. Computes the real positions of about 2,900 stars, constellation lines and the Moon for the city's local time (time zones and DST handled) and returns a preview plus vector poster PDFs (12x18 in, 18x24 in, A3, Letter, A4) and SVG. Takes a city name, not coordinates. Does not draw planets and is not for navigation or telescope pointing.

generate_star_map input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "city",
    "date"
  ],
  "properties": {
    "city": {
      "type": "string",
      "maxLength": 120,
      "minLength": 1,
      "description": "City the sky is seen from, with state or country if ambiguous, e.g. \"Austin, Texas\", \"Paris, France\", \"Kraków\". Not coordinates."
    },
    "date": {
      "type": "string",
      "maxLength": 40,
      "description": "Local date YYYY-MM-DD, e.g. 2019-06-21, or \"tonight\" for the sky tonight."
    },
    "time": {
      "type": "string",
      "maxLength": 16,
      "description": "Local clock time HH:MM (24 h) or 9:30 pm, e.g. 22:15. Default 21:00."
    },
    "theme": {
      "enum": [
        "midnight",
        "black",
        "paper",
        "ink"
      ],
      "type": "string",
      "description": "Colour style: midnight (navy and gold, default), black, paper (cream with a navy sky disc), ink (white, printer-friendly)."
    },
    "title": {
      "type": "string",
      "maxLength": 80,
      "description": "Poster headline, e.g. \"The night we met\"."
    },
    "labels": {
      "type": "boolean",
      "description": "Label the brightest stars and constellations, e.g. false (default, cleaner keepsake look)."
    },
    "message": {
      "type": "string",
      "maxLength": 160,
      "description": "Short line under the title, e.g. \"Under these stars, forever began\"."
    },
    "show_moon": {
      "type": "boolean",
      "description": "Draw the Moon in its real position and phase when it is above the horizon, e.g. true (default)."
    },
    "constellations": {
      "type": "boolean",
      "description": "Draw constellation lines, e.g. true (default)."
    }
  }
}

generate_star_map output schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "place",
    "coordinates",
    "local_time",
    "utc_time",
    "time_zone",
    "notes",
    "stars_drawn",
    "brightest_visible",
    "constellations_visible",
    "moon",
    "downloads",
    "request"
  ],
  "properties": {
    "moon": {},
    "notes": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "place": {
      "type": "string"
    },
    "request": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "utc_time": {
      "type": "string"
    },
    "downloads": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string"
      }
    },
    "time_zone": {
      "type": "string"
    },
    "local_time": {
      "type": "string"
    },
    "coordinates": {
      "type": "string"
    },
    "stars_drawn": {
      "type": "number"
    },
    "brightest_visible": {
      "type": "array",
      "items": {}
    },
    "constellations_visible": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "additionalProperties": false
}

generate_star_map annotations

{
  "title": "Generate star map",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

find_moon_phase — Find moon phase

Advertised by the server during the last successful anonymous check.

Advertised read-only

Use this when the user asks what the moon looked like on a date (birthday, wedding, first date), the moon phase today or tonight, whether two people's birthday moons complete each other ("our moons make a full moon"), or wants a moon phase calendar for a month. Returns phase name, illumination %, moon age, waxing/waning, exact phase times and the next full and new moon, computed with astronomical algorithms. Does not give astrology readings, tides or moonrise times. Do not use for planets or eclipses.

find_moon_phase input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "city": {
      "type": "string",
      "maxLength": 120,
      "description": "City (with state or country if ambiguous) that sets the time zone and hemisphere, e.g. \"Austin, Texas\" or \"Sydney, Australia\". Without it, dates are read in UTC."
    },
    "dates": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 40
      },
      "maxItems": 12,
      "description": "Dates to look up as YYYY-MM-DD, optionally with a local time YYYY-MM-DDTHH:MM, e.g. [\"1998-07-14\"] for a birthday or [\"1996-05-02\", \"1997-11-20\"] for a couple. Omit for the Moon right now."
    },
    "month": {
      "type": "string",
      "maxLength": 24,
      "description": "A month YYYY-MM for a moon-phase calendar of every day plus the exact new, quarter and full moon times, e.g. 2026-01."
    },
    "labels": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 40
      },
      "maxItems": 12,
      "description": "Optional names for the dates in the same order, e.g. [\"Anna\", \"Ben\"]."
    }
  }
}

find_moon_phase output schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "place",
    "time_zone",
    "hemisphere",
    "note",
    "moons",
    "pair",
    "calendar"
  ],
  "properties": {
    "note": {
      "type": "string"
    },
    "pair": {
      "anyOf": [
        {},
        {
          "type": "null"
        }
      ]
    },
    "moons": {
      "type": "array",
      "items": {}
    },
    "place": {
      "type": [
        "string",
        "null"
      ]
    },
    "calendar": {
      "anyOf": [
        {},
        {
          "type": "null"
        }
      ]
    },
    "time_zone": {
      "type": "string"
    },
    "hemisphere": {
      "type": "string"
    }
  },
  "additionalProperties": false
}

find_moon_phase annotations

{
  "title": "Find moon phase",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

generate_moon_poster — Generate moon poster

Advertised by the server during the last successful anonymous check.

Advertised read-only

Use this when the user wants a printable moon phase poster: the moon on one special date, two dates side by side ("our moons" couple print), or a lunar calendar of a whole year. Computes the real phases and returns a preview plus vector PDFs (12x18 in, 18x24 in, A3, Letter, A4) and SVG. Does not sell or ship prints. Do not use for a quick phase answer without a poster; that is find_moon_phase.

generate_moon_poster input schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "kind"
  ],
  "properties": {
    "city": {
      "type": "string",
      "maxLength": 120,
      "description": "City for the time zone and hemisphere (southern hemisphere moons are drawn mirrored), e.g. \"Melbourne, Australia\". Default UTC."
    },
    "kind": {
      "enum": [
        "moon",
        "pair",
        "year"
      ],
      "type": "string",
      "description": "moon: one date's moon as a large print; pair: two dates side by side (e.g. two birthdays) with whether they complete each other; year: a lunar calendar of all 365 days. Example: pair."
    },
    "year": {
      "type": "integer",
      "maximum": 2200,
      "minimum": 1800,
      "description": "For year: the calendar year, e.g. 2027."
    },
    "dates": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 40
      },
      "maxItems": 2,
      "description": "For moon: one date; for pair: two dates. YYYY-MM-DD, optionally with a local time YYYY-MM-DDTHH:MM, e.g. [\"1995-03-14\", \"1996-09-02\"]."
    },
    "theme": {
      "enum": [
        "midnight",
        "black",
        "paper",
        "ink"
      ],
      "type": "string",
      "description": "midnight (default), black, paper, or ink."
    },
    "title": {
      "type": "string",
      "maxLength": 80,
      "description": "Poster headline, e.g. \"The moon on the day you were born\"."
    },
    "labels": {
      "type": "array",
      "items": {
        "type": "string",
        "maxLength": 40
      },
      "maxItems": 2,
      "description": "Optional names under each moon for pair, e.g. [\"Mia\", \"Leo\"]."
    },
    "message": {
      "type": "string",
      "maxLength": 160,
      "description": "Short line under the title, e.g. \"Mia, 14 March 1995\"."
    }
  }
}

generate_moon_poster output schema

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "kind",
    "summary",
    "moons",
    "pair",
    "downloads",
    "request"
  ],
  "properties": {
    "kind": {
      "type": "string"
    },
    "pair": {
      "anyOf": [
        {},
        {
          "type": "null"
        }
      ]
    },
    "moons": {
      "type": "array",
      "items": {}
    },
    "request": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {}
    },
    "summary": {
      "type": "string"
    },
    "downloads": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string"
      }
    }
  },
  "additionalProperties": false
}

generate_moon_poster annotations

{
  "title": "Generate moon poster",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

1 advertised

sky-keepsake-widget — Moon & Star Map view

Advertised by the server during the last successful anonymous check.

Interactive view for Moon & Star Map.

sky-keepsake-widget URI

ui://widget/sky-keepsake-v2-1.0.0-15f79fb8b4a515c3ceca8db7be23f0ef2becd8cdbcf8d190aec5d96e06180036.html

MIME type: text/html;profile=mcp-app

sky-keepsake-widget-legacy — Moon & Star Map view (previous versions)

Advertised by the server during the last successful anonymous check.

sky-keepsake-widget-legacy URI template

ui://widget/sky-keepsake-{version}.html

MIME type: text/html;profile=mcp-app

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks: 1 of 1 (100%)
Average latency: 818 ms
95th percentile latency: 818 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

Nov 1, 2026, 8:53 AM UTC · probe · passed · 818 ms · metadata changed · 3 tool(s), 1 resource(s), 1 resource template(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http moon-star-map-mcp https://sky-keepsake.zovo.one/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add moon-star-map-mcp --url https://sky-keepsake.zovo.one/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable moon-star-map-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "moon-star-map-mcp": {
      "url": "https://sky-keepsake.zovo.one/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).

Cline configuration

{
  "mcpServers": {
    "moon-star-map-mcp": {
      "type": "streamableHttp",
      "url": "https://sky-keepsake.zovo.one/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start moon-star-map-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "moon-star-map-mcp": {
      "type": "http",
      "url": "https://sky-keepsake.zovo.one/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http moon-star-map-mcp https://sky-keepsake.zovo.one/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "moon-star-map-mcp": {
      "url": "https://sky-keepsake.zovo.one/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "moon-star-map-mcp": {
      "serverUrl": "https://sky-keepsake.zovo.one/mcp"
    }
  }
}

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Moon & Star Map MCP

Endpoint and access

What you can do with it

Source and maintenance

Protocol and capabilities

Server-provided instructions

Tools

Prompts

Resources

30-day availability

Maintenance history

Connect from your client

Claude Code

Codex

Cursor

Cline

VS Code

Gemini CLI

Claude Desktop

Windsurf

Let your agent find its tools

Other productivity and knowledge servers