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Connect Circle of Fifths Navigator to ChatGPT and Claude

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. Map out musical keys and complex modulations with ease.

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 · 4 capabilities

We ship only the actions that matter.

Capability set01 / 01

01-04

4 capabilities in this set.

Part of 4 available through Circle of Fifths Navigator.

  1. 01

    Get key neighbors

    This capability identifies the closest musical relatives to a specific key. It returns the dominant, subdominant, relative major, and relative minor keys.

  2. 02

    Calculate modulation paths

    This capability finds natural ways to change keys during a composition. It calculates modulation paths based on their distance on the circle.

  3. 03

    Get enharmonic mapping

    This capability finds equivalent keys that use different notation. It helps you identify keys that sound the same but are written differently.

  4. 04

    Get key signature details

    This capability provides the technical breakdown of a key. It lists the accidental order and the available modes for that specific scale.

Real work

What teams actually run

01

Smooth Key Transitions

Use the modulation capability to find a key that feels natural to move to after a specific section.

02

Scale Exploration

Ask your agent for the modes available in a key to expand your melodic palette.

03

Transposition Support

Use enharmonic mapping to find the right notation for a specific musical context.

04

Theory Verification

Quickly check the dominant or subdominant of a key to ensure harmonic correctness.

One connector, every AI

Circle of Fifths Navigator 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 Circle of Fifths Navigator 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

750ms average. Fast in production.

Circle of Fifths Navigator is checked daily against the live service.

Daily averagePeak 1015ms
Oct 3Today
Fastest day
556ms
Slowest day
1015ms
14-day trend
Improving-17%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 4 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 Circle of Fifths Navigator, so you can see the experience inside your AI.

It does not authenticate your account with Circle of Fifths Navigator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Circle of Fifths Navigator Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_KCFCnYr4ttCwx654AH7OXTV80ozxxJ8LGlbNDd42/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 — Circle of Fifths Navigator capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "circle-of-fifths-navigator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_KCFCnYr4ttCwx654AH7OXTV80ozxxJ8LGlbNDd42/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 Circle of Fifths Navigator in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Circle of Fifths Navigator owners hand off.

This MCP is built for creators who need to move quickly through music theory calculations without breaking their creative flow.

  • 01

    Composers

    They hand off the math of modulation and key signatures to the AI to focus on melody.

  • 02

    Music Theorists

    They use the capability to quickly verify tonal relationships and scale components.

  • 03

    Arrangers

    They use it to find appropriate key changes and relative scales for different sections.

FAQ

Questions Circle of Fifths Navigator owners ask.

  • 01

    What AI clients can I use with this MCP?

    You can use this MCP with any compatible client including Claude, Cursor, Windsurf, and VS Code.

  • 02

    Do I need to host the MCP myself?

    No, Vinkius hosts and manages the MCP for you. You just connect your client and start using the capabilities.

  • 03

    Can this help me with complex modulations?

    Yes, the calculate_modulation_paths capability identifies natural paths based on the distance between keys on the circle.

  • 04

    Does it provide information on musical modes?

    Yes, the get_key_signature_details capability provides the available modes for a given key.

  • 05

    How does it handle different notations for the same key?

    The get_enharmonic_mapping capability finds equivalent keys that use different notation.

  • 06

    How can I find the closest musical relatives to a specific key?

    Use the get_key_neighbors capability by providing the name of your starting key (e.g., 'G Major'). It will return the dominant, subdominant, and relative major/minor keys.

  • 07

    How do I identify natural modulation paths for a song?

    Use the calculate_modulation_paths capability. By specifying a starting key and a maximum distance, you can see which keys are reachable with 'Immediate' or 'Adjacent' difficulty levels.

  • 08

    Can this capability help me understand key signatures?

    Yes, the get_key_signature_details capability provides the exact order of sharps or flats, the total count of accidentals, and the available modes for any given key.

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