MCP Servers

BluesPrince/thiri-mcp

Name: BluesPrince/thiri-mcp
Author: Various

Deterministic music-theory MCP server & API — chord analysis, Roman-numeral analysis, voicing & reharmonization for Claude & Cursor. Computed, not hallucinated.

Visit site ↗

Our verdict

Not reviewed yet

We have not reviewed BluesPrince/thiri-mcp yet

No one at Enterprise DNA has checked this listing against its sources. The description comes from public listings gathered automatically. Any fact below shows where it came from and when it was last checked.

How we review records

From the listing

About BluesPrince/thiri-mcp

A deterministic music-theory MCP server and API that provides chord analysis, Roman-numeral analysis, voicing, and reharmonization for use with Claude and Cursor. It computes results from music theory rules rather than relying on generative AI, ensuring consistent and hallucination-free outputs. Hosted at mcp.thiri.ai and installable via npx.

Best for

Developers and musicians who need reliable, rule-based music theory analysis inside AI coding environments

Use cases

Analyze chord progressions with Roman-numeral notation in a code editor
Generate voicings and reharmonizations for composition or arrangement
Integrate deterministic music theory into AI-assisted music production workflows

Notes

1 stars on GitHub. Last updated 2026-06-20. Licensed MIT.

Pros

Deterministic results eliminate hallucination risks common in generative models
Works directly with popular AI coding tools like Claude and Cursor
Simple installation via npx for quick setup

Cons

Limited to music theory operations, not a general-purpose tool
Small community with only 1 star on GitHub, indicating early-stage adoption
Requires an external MCP host (Claude/Cursor) to function

Key facts

What we have checked

Days since the last commit: 6; Checked 26 Oct 2026GitHub
GitHub forks: 0; Checked 26 Oct 2026GitHub
GitHub stars: 12; Checked 26 Oct 2026GitHub
Open issues: 2; Checked 26 Oct 2026GitHub
Releases in the last 90 days: 1; Checked 26 Oct 2026GitHub

Each value shows when we last confirmed it and where it came from. Values we have not confirmed are left out, never guessed.

How to use

How to set it up

As the listing publishes it. We have not run this install.

Install

claude mcp add thiri --env THIRI_API_KEY=sk_live_your_key -- npx -y @bluesprincemedia/thiri-mcp

Tools exposed

analyze_chord
resolve_chord
generate_voicing
conduct_band
thiri-conductor-mcp
thiri-composition-mcp
THIRI_API_KEY
THIRI_API_URL

Clients the listing names (not checked here)

Claude Desktop, Claude Code, Cursor

Example client config

{
  "mcpServers": {
    "thiri": {
      "command": "npx",
      "args": [
        "-y",
        "@bluesprincemedia/thiri-mcp"
      ],
      "env": {
        "THIRI_API_KEY": "sk_live_your_key"
      }
    },
    "thiri-conductor": {
      "command": "npx",
      "args": [
        "-y",
        "@bluesprincemedia/thiri-mcp",
        "thiri-conductor-mcp"
      ],
      "env": {
        "THIRI_API_KEY": "sk_live_your_key"
      }
    },
    "thiri-composition": {
      "command": "npx",
      "args": [
        "-y",
        "@bluesprincemedia/thiri-mcp",
        "thiri-composition-mcp"
      ]
    }
  }
}

Install

Add BluesPrince/thiri-mcp to your client

Not verified yet

Our lab has not run this server yet. "Config checked" on a client means the recipe matches that client's documented config format; it does not mean we ran it.

Claude Code

Config checked

Run in your terminal (remote server)

claude mcp add --transport http bluesprince-thiri-mcp https://mcp.thiri.ai/mcp

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Code's config docs

Claude Desktop

Config checked

Add to claude_desktop_config.json (runs on your computer)

{
  "mcpServers": {
    "bluesprince-thiri-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@bluesprincemedia/thiri-mcp@0.5.2"
      ],
      "env": {
        "THIRI_API_KEY": "YOUR_THIRI_API_KEY"
      }
    }
  }
}

Needs THIRI_API_KEY: replace each YOUR_ value with your own.

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Claude Desktop's config docs

Cursor

Config checked

Add to .cursor/mcp.json (remote server)

{
  "mcpServers": {
    "bluesprince-thiri-mcp": {
      "url": "https://mcp.thiri.ai/mcp"
    }
  }
}

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Cursor's config docs

VS Code

Config checked

Add to .vscode/mcp.json (remote server)

{
  "servers": {
    "bluesprince-thiri-mcp": {
      "type": "http",
      "url": "https://mcp.thiri.ai/mcp"
    }
  }
}

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against VS Code's config docs

Codex

Config checked

Add to ~/.codex/config.toml (remote server)

[mcp_servers.bluesprince-thiri-mcp]
url = "https://mcp.thiri.ai/mcp"

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against Codex's config docs

ChatGPT

Config checked

Fill in the Add custom MCP server form (remote server)

Where: ChatGPT Plugins > + > Add custom MCP server
Name: THIRI Chord Intelligence
Description: Deterministic music theory for agents: analyze, voice, reharmonize, conduct — computed, not guessed
Connection: Public endpoint
MCP server URL: https://mcp.thiri.ai/mcp

Version 0.5.2 · From the Official MCP registry, read 24 Oct 2026 · Format checked against ChatGPT's config docs

Recipes come from the server's entry in the official MCP registry. Check the package name before you run it, and keep keys out of shared files.

Works with

What BluesPrince/thiri-mcp connects to

6 clients, each with how we know and when we checked.

Works with	Type	How we know	Checked
Claude Code	Client	Install recipe matches the client's documented formatRemote server, version 0.5.2Config checked	24 Oct 2026Claude Code docs
Claude Desktop	Client	Install recipe matches the client's documented formatRuns locally, version 0.5.2Config checked	24 Oct 2026Claude Desktop docs
Cursor	Client	Install recipe matches the client's documented formatRemote server, version 0.5.2Config checked	24 Oct 2026Cursor docs
VS Code	Client	Install recipe matches the client's documented formatRemote server, version 0.5.2Config checked	24 Oct 2026VS Code docs
Codex	Client	Install recipe matches the client's documented formatRemote server, version 0.5.2Config checked	24 Oct 2026Codex docs
ChatGPT	Client	Install recipe matches the client's documented formatRemote server, version 0.5.2Config checked	24 Oct 2026ChatGPT docs

Health and security

Is BluesPrince/thiri-mcp looked after, and what do its setup files show

Health score

72 out of 100

Does someone look after this repository? It does not say the code is good or safe. Worked out from GitHub signals checked 26 Oct 2026. How it is worked out

Part	Points	What we saw
Recent activity	30 of 30	Last push 6 days ago
Releases	7.5 of 15	1 release in 90 days
Issue replies	Not counted	The latest check has no issue response reading (fewer than 3 measured issues, or issues switched off)
Maintainer	0 of 15	Owned by a single user
Official source	20 of 20	Official server

Sources

Where this comes from

GitHubRegistry
Checked 26 Oct 2026 · Days since the last commit, GitHub forks, GitHub stars, Open issues, Releases in the last 90 days

A source shows what was published when we checked it. It does not certify security, performance or a working installation. Read our method.

Changelog

What changed

No changes recorded yet. Releases, price changes and deprecations appear here, with their dates, once we track them for this record.

Pairs with

Other entries in the index that connect to this one. Click through to see the chain.

Built with1 entry

MMCPlowCatalogue

FastMCP

Various

🚀 The fast, Pythonic way to build MCP servers and clients.

★ 25,425

Free 27-page guide

Get the free Developer’s Field Guide

A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.

Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.

← Back to MCP Servers Submit your own entry →