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Connect Moon Phase Calculator to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Get precise lunar data for any date instantly.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 3 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-03

3 capabilities in this set.

Part of 3 available through Moon Phase Calculator.

  1. 01

    Get illumination thresholds

    This capability identifies the logical boundaries used to categorize a moon's phase. It shows how illumination levels define each phase.

  2. 02

    Get lunar phase

    This capability calculates the moon's state for a specific date. It returns the moon's age, phase name, illumination, and the days until the next New or Full Moon.

  3. 03

    Get phase sequence

    This capability provides the ordered list of moon phase names. Use it to understand the progression of the lunar cycle.

Real work

What teams actually run

01

Historical Research

Check the moon phase for a specific date in history to add context to a narrative or study.

02

App Development

Feed precise lunar data into an agent to power features in astronomy or nature apps.

03

Event Planning

Calculate the days remaining until a Full Moon for photography or outdoor activities.

04

Data Analysis

Use illumination thresholds to categorize lunar data in a dataset.

One connector, every AI

Moon Phase Calculator works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put Moon Phase Calculator to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

959ms average. Fast in production.

Moon Phase Calculator is checked daily against the live service.

Daily averagePeak 1390ms
Oct 3Today
Fastest day
740ms
Slowest day
1390ms
14-day trend
Slowing+32%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 3 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Moon Phase Calculator, so you can see the experience inside your AI.

It does not authenticate your account with Moon Phase Calculator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Moon Phase Calculator Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_soLzpvW0Ef4xx8ewhekQSA7RwAV5LPmW6wnym2A5/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Moon Phase Calculator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "moon-phase-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_soLzpvW0Ef4xx8ewhekQSA7RwAV5LPmW6wnym2A5/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Moon Phase Calculator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Moon Phase Calculator owners hand off.

This is for anyone building agents that require astronomical context. It works well for developers and researchers who need reliable lunar data.

  • 01

    Developers

    They hand off the math of lunar cycles to the MCP to build more accurate apps.

  • 02

    Astronomers

    They use the capability to quickly verify lunar states for specific historical or future dates.

  • 03

    Data Scientists

    They integrate lunar illumination data into larger environmental or temporal datasets.

FAQ

Questions Moon Phase Calculator owners ask.

  • 01

    How do I use this Moon Phase Calculator?

    You connect it to an MCP-compatible client like Claude or Cursor. Once connected, you just ask your agent for lunar information, and it uses the capabilities to find the answer.

  • 02

    Can I get the moon phase for a date in the past?

    Yes. The capability calculates the moon's age, phase, and illumination for any specific date you provide.

  • 03

    Does this MCP require an API key?

    No. Vinkius hosts the MCP and manages everything. You just connect and start using it.

  • 04

    What kind of lunar data can my agent access?

    Your agent can get the moon's age, the phase name, the illumination percentage, and the number of days until the next New or Full Moon.

  • 05

    Is the lunar data accurate?

    The MCP provides deterministic calculations for lunar phases, illumination, and sequences.

  • 06

    How accurate are the lunar phase calculations?

    The calculations use a deterministic trigonometric approximation of the 29.53-day synodic month to provide highly reliable lunar data.

  • 07

    Can I check the moon phase for a date in the past or future?

    Yes, by using the get_lunar_phase capability, you can provide any date in YYYY-MM-DD format to calculate the lunar state for that specific time.

  • 08

    What information is returned for a specific date?

    You will receive the moon's age in days, the current phase name, the illumination percentage, and the days remaining until the next Full and New Moon.

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