# Marketplace Fee Calculator AI Agent Connect > Marketplace Fee Calculator MCP lets your AI client handle the heavy math of e-commerce profitability. It calculates net proceeds by accounting for commissions, payment processing, shipping, taxes, and promotions. Instead of guessing your margins, you can run precise simulations to see how price changes or new shipping rates affect your bottom line. ## Overview - **Category:** finance - **Price:** Free - **Endpoint:** https://edge.vinkius.com/vk_preview_7iZv9Xwc3XVhtk7YGZDU1Cam03L8v5Q5YxxfgSQc/ai-agent-connect - **Tags:** fees, payouts, transactions, marketplace, accounting ## Description Stop guessing what you actually take home from a sale. This MCP gives your AI agent the ability to perform precise financial modeling for marketplace sellers. You can move past simple subtraction and run complex scenarios that account for the messy reality of e-commerce, including tiered commissions, variable payment fees, and promotional costs. When you're pricing a new product, your agent can check if your proposed fee structure is even viable. If you're considering a sale or a change in shipping strategy, you can simulate how those specific shifts impact your final margins. It turns your AI client into a dedicated financial analyst that understands the difference between gross revenue and actual profit. Whether you are running a single item or managing a high-volume storefront, this tool ensures your pricing stays profitable after every fee is settled. ## Tools ### validate_fee_config null ### calculate_batch_fees null ### calculate_single_transaction null ### simulate_payout_impact null ## Prompt Examples **Prompt:** ``` What are my net proceeds for a $100 sale with a 15% commission, $2 fixed payment fee, 3% payment percentage fee, $10 shipping, $8 tax, and $5 promotion cost? ``` **Response:** ``` Your net proceeds for this transaction are $62.00. ``` **Prompt:** ``` Show me the detailed breakdown for a $50 sale with 10% commission, $1 fixed fee, 2% payment fee, $5 shipping, $4 tax, and $0 promotion. ``` **Response:** ``` The deductions are: Commission: $5.00, Payment Fee: $2.00, Shipping: $5.00, Tax: $4.00, Promotion: $0.00. Total deductions: $16.00. ``` **Prompt:** ``` If I increase my shipping cost from $10 to $15 on a $100 sale, how much will my proceeds change? ``` **Response:** ``` Increasing the shipping cost by $5.00 will decrease your net proceeds by exactly $5.00. ``` ## Capabilities ### Net Profit Calculation Your agent calculates the exact amount you keep after all marketplace deductions. ### Itemized Deduction Lists The AI generates a clear list of every fee, tax, and cost applied to a sale. ### Margin Sensitivity Testing Your agent determines how specific cost changes impact your final take-home pay. ### Profitability Validation The AI checks if your pricing model and fee structure will result in a profit. ## Use Cases ### New Product Pricing Test different price points to see which one maximizes your net proceeds after all fees. ### Promotion Planning Calculate if a specific discount or promotion will leave you with a profitable margin. ### Shipping Strategy Shifts Model how moving to a more expensive shipping tier affects your bottom line. ### Fee Auditing Get a granular breakdown of deductions to understand your cost of doing business. ## Benefits - Eliminates manual math errors in profit modeling. - Provides instant visibility into fee structures. - Enables rapid what-if testing for pricing changes. - Confirms profitability before you launch a promotion. ## How It Works Connecting this MCP to your AI client gives your agent immediate access to professional e-commerce math tools. 1. Connect the MCP to your client like Claude or Cursor via Vinkius. 2. Provide your sale details, such as gross price and fee percentages, to your agent. 3. Ask your agent to calculate proceeds or simulate a change. 4. Review the itemized breakdown or net total provided by the agent. ## Frequently Asked Questions **How does this MCP calculate my net proceeds?** It subtracts commissions, payment processing fees, shipping, taxes, and any promotion costs from your gross sale price. **Can I use this to test different shipping costs?** Yes. You can use the simulation tool to see exactly how changing a single variable like shipping affects your final profit. **What AI clients can use this MCP?** You can connect this to any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code. **Does this tool show me a list of all my fees?** Yes. The breakdown tool provides an itemized list of every deduction applied to the sale. **Can I check if my pricing is profitable?** Yes. The validation tool checks if your specific combination of fees and costs is mathematically viable for your target price. **How are the net proceeds calculated?** Net proceeds are calculated by taking the gross sale price and subtracting the marketplace commission, payment fees (fixed and percentage), shipping costs, taxes, and any promotion costs. **Can I test how a discount affects my profit?** Yes, you can use the `simulate_margin_impact` tool to adjust variables like promotion costs and see the resulting change in proceeds. **Does this tool include shipping costs in the deductions?** Yes, shipping costs are treated as a deduction from the gross sale price to arrive at the final net proceeds. **How do I calculate a single sale fee?** Use the `calculate_single_transaction` tool by providing the sale price and the fee percentage. **Can I process multiple sales at once?** Yes, use `calculate_batch_fees` with a list of sales to get total fees and payouts. **How can I see the impact of a fee change?** You can use `simulate_payout_impact` to compare the difference between a current fee and a new proposed fee.