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Connect Trading Card Break Even Calculator to your AI

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. Know your exact margins before you buy or grade.

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 Trading Card Break-Even.

  1. 01

    Get break even analysis

    This capability finds the minimum sale price you need to hit zero profit. It also shows your projected profit or loss if you sell at a specific target price.

  2. 02

    Get cost structure summary

    This capability provides a full breakdown of every expense you've incurred. It separates acquisition costs from preparation costs like grading and shipping.

  3. 03

    Get grade sensitivity projections

    This capability models your potential returns based on different grading outcomes. It uses probabilities to show how likely you are to hit specific profit targets.

  4. 04

    Compare resale strategies

    This capability evaluates two different ways to exit a position. It shows you which strategy produces a better ROI for your specific cards.

Real work

What teams actually run

01

Pre-Grading Decisions

Decide if a raw card is worth the grading fee by modeling the expected return based on grade probabilities.

02

Pricing for Profit

Set your listing prices by calculating the exact break-even point including all shipping and tax costs.

03

Strategy Testing

Compare selling a card immediately versus waiting for a higher grade to see which path yields more money.

04

Expense Tracking

Get a clear view of how much you've actually spent on preparation and acquisition for a specific item.

One connector, every AI

Trading Card Break-Even 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 Trading Card Break-Even 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

926ms average. Fast in production.

Trading Card Break-Even is checked daily against the live service.

Daily averagePeak 1008ms
Oct 3Today
Fastest day
778ms
Slowest day
1008ms
14-day trend
Slowing+10%

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 Trading Card Break-Even, so you can see the experience inside your AI.

It does not authenticate your account with Trading Card Break-Even. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Trading Card Break-Even Connector

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

Connector linkhttps://edge.vinkius.com/vk_preview_3tXKCHWYtswqUayR2dEedlMOkggIFTAy5PkxfZQX/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 — Trading Card Break-Even capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "trading-card-break-even-calculator-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_3tXKCHWYtswqUayR2dEedlMOkggIFTAy5PkxfZQX/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 Trading Card Break-Even in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Trading Card Break-Even owners hand off.

This MCP is designed for serious trading card investors and resellers who need precise financial data.

  • 01

    Card Resellers

    They hand off raw purchase data and fee structures to the AI to find profitable flip prices.

  • 02

    Grading Arbitrageurs

    They use the capability to model the risk of grading raw cards against potential returns.

  • 03

    Portfolio Managers

    They use the cost summaries to track total capital deployed across various card assets.

FAQ

Questions Trading Card Break-Even owners ask.

  • 01

    How does this MCP handle platform fees?

    You can include the platform fee percentage in your prompt, and the capability will factor it into the break-even and ROI calculations.

  • 02

    Can I model the risk of a low grade?

    Yes, the grade sensitivity capability allows you to input different grading outcomes and their probabilities to see your expected return.

  • 03

    Does it include shipping and insurance costs?

    Yes, you can provide these specific costs to get a complete picture of your total investment and break-even price.

  • 04

    Which AI clients can use this?

    Any MCP-compatible client like Claude, Cursor, Windsurf, or VS Code can use this capability once connected via Vinkius.

  • 05

    Do I need to host this myself?

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

  • 06

    How does the capability calculate the break-even price?

    The get_break_even_analysis capability calculates the price required to cover the total investment (acquisition, grading, shipping, insurance, and taxes) while accounting for the marketplace platform fee percentage.

  • 07

    Can I model different grading outcomes?

    Yes, you can use get_grade_sensitivity_projections to provide a list of possible grades, their expected resale prices, and their probabilities to see a weighted average of expected returns.

  • 08

    What costs are included in the total investment?

    The total investment includes the acquisition cost, grading fees, shipping costs, insurance, and any applicable acquisition taxes.

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