How to Use the Chord Substitution Finder MCP in Mastra AI

Q: Can I use Chord Substitution Finder with Mastra AI to find substitutions?

Yes. Use findsubstitutions in a workflow step. If one type of swap fails, your agent can automatically retry using the results from another tool.

Q: Is Chord Substitution Finder useful for complex music projects on Mastra AI?

Definitely. Running analyzeprogressiontension helps you structure a piece's emotional journey, allowing your agent to manage multiple steps and outcomes gracefully.

Build complex music theory workflows with Chord Substitution Finder using Mastra AI.

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Connect Chord Substitution Finder MCP to Mastra AI

Create your Vinkius account to connect Chord Substitution Finder to Mastra AI and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Chord Substitution Finder with Mastra AI

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Perplexity

Measure Harmonic Tension

Got a complicated chord progression? The `analyze_progression_tension` tool measures the harmonic tension arc across your piece. It tells you exactly where the emotional buildup happens and when it resolves. This is vital for building multi-stage, emotionally satisfying music. You can use this data to guide subsequent steps in a Mastra AI workflow.

Discover Chord Substitutions

When you're stuck on a chord, the `find_substitutions` tool finds potential swaps for that single chord. It uses strict music theory rules to give you viable alternatives. These substitutions are ready to be fed into another stage of your workflow, letting Mastra AI handle complex multi-step revisions automatically.

Get Deep Chord Explanations

Want the background on a particular swap? Call `get_substitution_detail`. This tool provides granular theory—explaining why a specific substitution works, how it changes voice leading, and its harmonic effect. It gives you the technical justification needed when your Mastra AI agent needs to report its findings or make a documented choice.

Setup guide

Set up Chord Substitution Finder MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Chord Substitution Finder tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "chord-substitution-finder-mcp-client",
  servers: {
    "chord-substitution-finder-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Chord Substitution Finder Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Chord Substitution Finder tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Chord Substitution Finder transactions"
);
console.log(result.text);

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Common questions about Chord Substitution Finder MCP in Mastra AI

You build workflows that run through the MCP tools. For example, you can first analyze tension and then use those results to decide which substitutions to find next.

It processes musical notation, specifically chord sequences and individual chords. The MCP only handles the structural math of harmony.

Yes. Use `find_substitutions` in a workflow step. If one type of swap fails, your agent can automatically retry using the results from another tool.

Definitely. Running `analyze_progression_tension` helps you structure a piece's emotional journey, allowing your agent to manage multiple steps and outcomes gracefully.

The server processes musical notation. It handles text strings representing chords and chord sequences for its analysis tools.

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