How do I use this MCP with Claude?

You connect to the Vinkius hosted MCP once, and then your Claude client can call the financial capabilities directly during your conversations.

Can I compare two different investments?

Yes, you can use the compare_investment_performance capability to see which scenario had a better percentage return.

Does this handle annualized returns?

Yes, the calculate_annualized_return capability converts total returns into yearly geometric mean returns based on the time elapsed.

What kind of math does the MCP do?

It handles simple percentage returns, annualized returns, performance comparisons, and qualitative outcome summaries.

Do I need to host the MCP myself?

No, Vinkius hosts and manages the MCP for you, so it is ready to use as soon as you connect your client.

How do I calculate the yearly return for a long-term investment?

You can use the calculate_annualized_return capability. Provide the initial value, the final value, and the number of years that have elapsed to get the geometric mean return per year.

Can I compare two different stocks using this capability?

Yes. Use compare_investment_performance by providing the initial and final values for both investments to see which one had the higher percentage return.

What happens if my investment lost money?

The capabilities will correctly identify a negative return. For example, get_return_summary will return a status of 'Loss'.

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Connect Investment Return Calculator to ChatGPT and Claude

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. Get precise financial performance metrics through your AI client.

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.

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.

How Vinkius works: one connection, every tool, in any AI

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.

Complete set · 4 capabilities

The complete Investment Return Calculator capability set.

These are the exact actions your AI can choose when you ask it to work with Investment Return Calculator.

Capability set01 / 01

01-04

4 capabilities in this set.

Part of 4 available through Investment Return Calculator.

01
Calculate simple return
This capability calculates the basic percentage return for a single investment asset.
02
Calculate annualized return
This capability converts a total return into an equivalent yearly return by accounting for the time elapsed.
03
Compare investment performance
This capability evaluates two different investment scenarios to see which one performed better in percentage terms.
04
Get return summary
This capability provides a descriptive classification of the investment outcome.

One connector, every AI

Investment Return Calculator 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.

Building your own app? The connector is yours to use.

You don't need a client to put Investment Return Calculator 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

949ms average. Fast in production.

Investment Return Calculator is checked daily against the live service.

Daily averagePeak 1033ms

Sep 24Today

Fastest day: 860ms
Slowest day: 1033ms
14-day trend: Improving-8%

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 Investment Return Calculator, so you can see the experience inside your AI.

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

Investment Return Calculator Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_0seKPNJV8qtWIEsQ69KLnL8ESF8reiQh1uMgjfJF/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Investment Return Calculator capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "investment-return-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_0seKPNJV8qtWIEsQ69KLnL8ESF8reiQh1uMgjfJF/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? How to give Claude access to Investment Return Calculator

See all the AI clients this connector works with ↑

Who it's for

Built for the work Investment Return Calculator owners hand off.

This MCP is built for anyone managing portfolios or analyzing financial data through an AI interface.

01
Financial Analysts
They hand off raw asset data to the AI to get quick performance metrics.
02
Personal Investors
They use the agent to track their own portfolio growth and annualized yields.
03
Accountants
They use the capabilities to verify percentage changes and investment outcomes.

FAQ

Questions Investment Return Calculator owners ask.

01
How do I use this MCP with Claude?
You connect to the Vinkius hosted MCP once, and then your Claude client can call the financial capabilities directly during your conversations.
02
Can I compare two different investments?
Yes, you can use the compare_investment_performance capability to see which scenario had a better percentage return.
03
Does this handle annualized returns?
Yes, the calculate_annualized_return capability converts total returns into yearly geometric mean returns based on the time elapsed.
04
What kind of math does the MCP do?
It handles simple percentage returns, annualized returns, performance comparisons, and qualitative outcome summaries.
05
Do I need to host the MCP myself?
No, Vinkius hosts and manages the MCP for you, so it is ready to use as soon as you connect your client.
06
How do I calculate the yearly return for a long-term investment?
You can use the calculate_annualized_return capability. Provide the initial value, the final value, and the number of years that have elapsed to get the geometric mean return per year.
07
Can I compare two different stocks using this capability?
Yes. Use compare_investment_performance by providing the initial and final values for both investments to see which one had the higher percentage return.
08
What happens if my investment lost money?
The capabilities will correctly identify a negative return. For example, get_return_summary will return a status of 'Loss'.

Explore

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Connect Investment Return Calculator to Claude, Cursor, ChatGPT & more

Connect Investment Return Calculator to ChatGPT and Claude

Your AI does the work. We keep it safe and sound.