How to Use the Tax Regime Comparator MCP in Claude Code

Run Brazilian tax simulations directly from your terminal and pipe the results using Claude Code.

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Connect Tax Regime Comparator MCP to Claude Code

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Setup Tax Regime Comparator with Claude Code

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Terminal-based tax simulations with Claude Code

Let's cut to the chase. You don't need a bloated GUI to calculate corporate tax liabilities. You need raw numbers, fast. This MCP lets you run `compare_tax_regimes` directly from your command line. Claude Code evaluates your annual revenue against different Brazilian tax structures to find the most efficient one.

Get raw tax breakdowns in your terminal

Right. Let's look at the numbers. The math doesn't lie, and you need to see the exact split of IRPJ, CSLL, PIS, and COFINS. Using `get_regime_breakdown`, Claude Code pulls a detailed breakdown of each tax component. You can easily pipe this structured output to other command-line utilities or save it to a JSON file.

Scriptable tax planning for developers

Here's the catch. Integrating financial planning into your backend workflows is usually a nightmare of APIs and manual entry. This MCP allows you to automate tax simulations within your CI/CD pipelines or cron jobs. Claude Code handles the execution and returns clean, structured data for your scripts.

Setup guide

Set up Tax Regime Comparator MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see tax-regime-comparator-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest Tax Regime Comparator transactions." It will automatically discover and invoke the available Tax Regime Comparator tools.

Terminal

claude mcp add --transport http tax-regime-comparator-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the Tax Regime Comparator MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "tax-regime-comparator-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Tax Regime Comparator. 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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Common questions about Tax Regime Comparator MCP in Claude Code

Run the add command in your terminal with the transport flag and the MCP name. Claude Code will instantly connect and list the available tools.

Yes. You can pipe financial data into Claude Code and have it run the simulation. It outputs clean data that you can redirect to other CLI tools.

Yes. It calculates complex Lucro Real obligations based on your operational expenses. It compares these directly against Simples Nacional and Lucro Presumido.

The MCP runs locally on your machine. Claude Code communicates with it via standard input/output, meaning your calculations don't rely on external SaaS endpoints.

Your raw expense logs, corporate revenues, and tax rates are processed strictly within your secure local environment. Claude Code never uploads your raw financial records to external storage.

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