US 401k Calculator Connector for AI agents.
4 live capabilities
Plan your retirement savings and estimate tax benefits with precision.
Waiting for input…
Why people use US 401k Calculator
US 401k Contribution Calculator for Tax Optimization
This Connector does that math in one step. You tell your agent your salary and age, and it gives you the hard numbers on your limits, your employer's contribution, and your tax savings. You get a clear retirement plan without the spreadsheet headache.
What Vinkius changes
You get accurate retirement numbers without doing any manual math.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 5,900+ Connectors
- Real-world use case 01
Maxing out at age 50
A user wants to know their total limit including catch-up contributions.
- Real-world use case 02
Calculating tax impact
Someone wants to see how a $5k contribution affects their 22% bracket.
- Real-world use case 03
Modeling a salary raise
A user gets a raise and wants to know if they should increase their savings.
Complete set · 4capabilities
The complete US 401k Calculator capability set.
These are the exact actions your AI can choose when you ask it to work with US 401k Calculator.
01—04
4 capabilities in this set.
Part of 4 available through US 401k Calculator.
- 01 Capability
Account growth capability
Account_growth_tool predicts your future retirement balance based on your current savings and interest rates.
- 02 Capability
Employer match capability
Employer_match_tool estimates the total amount your company contributes based on your salary and match percentage.
- 03 Capability
Max contribution capability
Max_contribution_tool calculates your maximum allowable 401k contribution including age-based catch-up limits.
- 04 Capability
Tax savings capability
Tax_savings_tool estimates the immediate reduction in your taxable income from your 401k contributions.
Set up in minutes
One URL. Then ask US 401k Calculator to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use US 401k Calculator from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it US 401k Calculator, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable US 401k Calculator for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the US 401k Calculator URL.
- Step 03
Save and start
Save the connection and enable US 401k Calculator in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"us-401k-contribution-calculator": {
"url": "https://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using US 401k Calculator
Open Agent mode in chat and ask: "Using US 401k Calculator, help me...". 4 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"us-401k-contribution-calculator": {
"url": "https://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using US 401k Calculator
Ask Copilot: "Using US 401k Calculator, help me...". 4 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"us-401k-contribution-calculator": {
"url": "https://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using US 401k Calculator
Open Cascade and ask: "Using US 401k Calculator, help me...". 4 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"us-401k-contribution-calculator": {
"url": "https://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using US 401k Calculator
Ask Cline: "Using US 401k Calculator, help me...". 4 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add us-401k-contribution-calculator --transport http "https://edge.vinkius.com/vk_preview_zjytwENENxnBZ0iJWYhckdyvNuL2UxdQtPUjm8RX/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using US 401k Calculator
Ask Claude: "Using US 401k Calculator, show me...". 4 tools are ready
Where the request belongs
Work US 401k Calculator can move forward.
This is for employees trying to maximize their benefits, financial advisors needing quick projections, and HR managers who want to explain matching rules without doing manual math.
Individual Saver
An employee who wants to know exactly how much they can put away without hitting IRS limits.
Financial Advisor
A professional who needs to show clients how different contribution levels impact their 20-year goals.
HR Benefits Specialist
A manager who needs to explain company matching percentages to staff clearly and accurately.
Build the capability set
Add more capabilities.
Each Connector adds new actions and data without changing how you work.
Browse Connectors
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Retirement Planning Engine
Project retirement savings growth, optimize Social Security benefits, and simulate withdrawal success.
Retirement Withdrawal Calculator
Estimate the sustainability of your retirement withdrawals using Monte Carlo simulations.
US Benefits Cost Calculator
Calculate the true total employer cost of US employees, including insurance, taxes, and PTO.
US Payroll Tax Calculator
Calculate precise US payroll tax liabilities, including FICA, Medicare, FUTA, and SUTA.
Compound Interest Optimizer
Detailed investment growth projections accounting for inflation, taxes, and penalties.
Bring your own AI
Change the model, client or framework. Keep US 401k Calculator connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
Kiro -
Roo Code -
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Vercel AI SDK
Before you connect
Questions about US 401k Calculator.
The practical details behind the request, access and result.
Can the US 401k Contribution Calculator handle catch-up contributions?
Yes, it automatically includes catch-up contribution limits for individuals aged 50 and older.
Does the US 401k Contribution Calculator show my actual bank balance?
No, this is a planning capability. It calculates projections and limits based on the data you provide, but it doesn't connect to your actual bank accounts.
Can I use the US 401k Contribution Calculator for tax planning?
Yes, you can use it to estimate how much your 401k contributions will reduce your taxable income for the year.
How does the US 401k Contribution Calculator handle employer matches?
It estimates your company's contribution based on your salary and the specific match percentage your employer offers.
Is this capability suitable for non-US residents?
No, this specific MCP is designed for US-based 401k retirement plans and IRS contribution rules.
What's the difference between this and a regular 401k calculator?
Unlike a static website calculator, this Connector allows your AI agent to handle complex, multi-step planning scenarios in a natural conversation.
How do I find my maximum 401k contribution?
Use the max_contribution_tool by providing your current age. The capability will return the base limit and indicate if you are eligible for catch-up contributions.
Can I estimate my employer's match?
Yes, use the employer_match_tool with your annual salary, contribution amount, and the company's matching percentage.
How much will I save in taxes?
By using the tax_savings_tool, you can calculate your immediate tax savings based on your contribution amount and marginal tax rate.
One connection away
Give your agent a direct line to US 401k Calculator.
Connect US 401k Calculator once. Keep it beside 5,900+ managed Connectors when the next task needs more.
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