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Connect Finance Toolkit to ChatGPT, Claude and Gemini

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. Stop letting your AI guess financial formulas.

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 Finance Toolkit.

  1. 01

    Calculate amortization

    This capability generates a summarized amortization schedule using either SAC or PRICE methods. You just need to provide the periodic decimal rate and the preferred type.

  2. 02

    Calculate compound interest

    Use this to find the total value of an investment over time. It handles compound interest calculations with customizable compounding frequencies.

  3. 03

    Calculate roi

    This capability computes the Return on Investment percentage for any given set of figures.

  4. 04

    Calculate simple interest

    This capability calculates simple interest over a specific period using a decimal rate.

Real work

What teams actually run

01

Loan Comparison

Compare the total interest paid between SAC and PRICE loan structures for a new mortgage.

02

Investment Analysis

Project the future value of a portfolio using specific compound interest frequencies.

03

Marketing Performance

Calculate the exact ROI of a specific ad spend or campaign.

04

Debt Management

Generate summaries of monthly installments for long term debt obligations.

Automate a task

Put Finance Toolkit to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Finance Toolkit 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 Finance Toolkit 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

913ms average. Fast in production.

Finance Toolkit is checked daily against the live service.

Daily averagePeak 1143ms
Oct 3Today
Fastest day
810ms
Slowest day
1143ms
14-day trend
Slowing+12%

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 Finance Toolkit, so you can see the experience inside your AI.

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

Finance Toolkit Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_a8BK9rquvt03nS511Zq6D2QDwhccx83foWWpjwe7/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 — Finance Toolkit capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "finance-toolkit-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_a8BK9rquvt03nS511Zq6D2QDwhccx83foWWpjwe7/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 Finance Toolkit in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Finance Toolkit owners hand off.

This MCP is built for professionals who need to bridge the gap between conversational AI and rigorous financial modeling.

  • 01

    Financial Analysts

    They hand off complex amortization and ROI calculations to the agent to speed up modeling.

  • 02

    Real Estate Investors

    They use the agent to quickly compare different loan types like SAC and PRICE.

  • 03

    Business Owners

    They rely on the agent to run quick profit margin and investment return checks.

FAQ

Questions Finance Toolkit owners ask.

  • 01

    How does this MCP prevent AI math errors?

    It offloads the math from the LLM to a deterministic Javascript engine. This ensures the result is a calculation, not a prediction.

  • 02

    Which AI clients can use this capability?

    Any MCP-compatible client like Claude, Cursor, Windsurf, or VS Code can use this toolkit.

  • 03

    Is my financial data safe?

    Yes. The calculations are performed locally, meaning your sensitive rates and principals do not leave your infrastructure.

  • 04

    Can I compare different loan types?

    Yes. You can use the amortization capability to generate summaries for both SAC and PRICE loan types.

  • 05

    Do I need to host this myself?

    No. Vinkius hosts and manages the MCP for you, so it is ready to use immediately after connection.

  • 06

    Why doesn't the amortization capability return the full 360-month table?

    Returning 360 lines of JSON would severely bloat the LLM's context window, increasing API costs and causing distraction. We return a "Smart Summary" (total paid, total interest, first and last installments) which is perfect for AI decision-making.

  • 07

    Are the compound interest calculations precise enough for banking?

    Yes. The underlying engine relies on JavaScript's high-precision floating-point arithmetic (IEEE 754 standard). Outputs are rounded to 2 decimal places specifically for financial display standards.

  • 08

    Can it compare SAC vs PRICE automatically?

    An AI agent using this MCP can execute the capability twice in parallel—once for SAC and once for PRICE—and instantly write a comparative analysis report for you based on the exact totals.

Explore

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