Vinkius
Roman Numeral Converter

Roman Numeral Converter MCP for AI. Turn chords into theory notation instantly.

Claude Claude
ChatGPT ChatGPT
Cursor Cursor
Gemini Gemini
Windsurf Windsurf
VS Code VS Code
JetBrains JetBrains
Vercel Vercel
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Works with every AI agent you already use

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How this MCP server connects to your AI agent

Roman Numeral Converter converts musical chords into functional Roman numerals and back. Use this MCP to instantly analyze chord progressions—like turning C-Am-F-G into I-vi-IV-V.

It also handles automatic transposition, shifting any sequence of chords to a new key while keeping the underlying harmonic logic intact.

Analyze a chord sequence

It takes raw chords (like C-Am) and turns them into their Roman numeral functional notation (I-vi).

Determine harmonic function

You can ask what the theoretical role of any given chord is within a specific key.

Shift progressions to new keys

The tool automatically transposes an entire progression, keeping all the harmonic relationships intact when changing the target key.

Included with Plan

Waiting for input…

AI Agent

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Claude AI

Claude AI

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.

2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL:

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.

3

Start a conversation

Open a new chat. The Roman Numeral Converter integration is available immediately — no restart needed.

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Roman Numeral Converter MCP server cover

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Roman Numeral Converter. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Built on the Model Context Protocol (MCP) for Claude, ChatGPT, Cursor, and more

The Model Context Protocol standardizes how applications expose capabilities to LLMs. Instead of operating in isolation, your AI gains direct access to external platforms, live data, and real-world actions through secure, standardized connections.

This connection provides powerful capabilities that interface natively with Claude, ChatGPT, Cursor, and other compatible AI platforms. No middleware. No custom integration required.

The struggle of notation conversion, Solved with Vinkius AI Gateway

Today, if you're collaborating on a piece or studying theory, you often have to copy chords from one format—say, fingerings—and paste them into another program that expects standard chord names. Then, if your mentor asks for the functional analysis, you spend twenty minutes manually cross-referencing every single chord against a key signature chart.

With this MCP, you just give your agent the raw progression. It handles all the parsing and conversion instantly, providing both the clear Roman numeral function and the underlying metadata. You get immediate analytical depth without lifting a finger.

Getting Functional Harmony with Roman Numeral Converter

The manual process involves multiple copy-pastes, checking key signatures, and recalculating intervals every time you shift the piece's root key. It’s slow, error-prone work that kills creative momentum.

Now, simply ask your agent to transpose a progression or resolve its function. The MCP does the heavy lifting of complex music theory calculations so you can stay focused on writing—not arithmetic.

What your AI can actually do with this

This connector lets musicians quickly move between practical chord names and functional music theory notation. If you write out chords for a piece—say, C major followed by Am—this MCP translates that raw list into Roman numerals (I-vi), which is how theorists discuss harmony. It’s essential when you need to analyze the underlying structure of a song or build a progression in a specific key.

You can give it a sequence and instantly get its theoretical equivalent. Plus, if you decide your piece needs to shift keys, the tool automatically transposes the whole progression for you, keeping the harmonic relationships sound. Finding this specialized utility within Vinkius makes advanced music theory analysis accessible directly through your agent.

Built · Hosted · Managed by Vinkius Roman Numeral Converter - Analyze Music Theory
Server ID 019ecb74-79f4-7206-908a-1c8f92db8452
Vinkius Inspector
Compliance Grade B
Score 85/100
Vinkius Inspector Badge — Score 85/100

Questions you might have

How do I use Roman Numeral Converter to find the harmonic function? +

You must first provide a chord and specify the key. For example, ask: 'What is the harmonic function of Am in C major?' The tool uses resolve_harmonic_function to give you the precise theoretical answer (vi).

Can I transpose an entire song progression using Roman Numeral Converter? +

Yes. Use the transpose_progression tool. Give it your starting sequence and tell it the new key, and it returns a fully mapped, transposed list of chords.

Is this MCP better than just looking at chord charts? +

Yes. Standard charts only show notes; this MCP shows function. It tells you if that chord is acting as the dominant (V) or the submediant (vi), which changes what it means musically.

What does `parse_progression_string` do? +

parse_progression_string cleans up raw input. It takes a jumbled string of chords and breaks it down into a clean, structured list that the other analysis tools can read.

Does Roman Numeral Converter handle different time signatures? +

The tool focuses on harmonic function and key changes rather than rhythm. It handles chord relationships regardless of specific time signature input.

Built & Managed by Vinkius 30s setup

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Vinkius runs on Vercel Vercel
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