
Connect Return Cost Reserve 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. Predict the capital you need to cover product returns.
Developed, maintained, and hosted by Vinkius.
MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED
Waiting for input…
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.

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.
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.
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.
01-04
4 capabilities in this set.
Part of 4 available through Return Cost Reserve.
- 01
Get return reserve estimate
This capability calculates the total financial reserve you need to set aside for a specific timeframe.
- 02
Get sensitivity analysis
Use this to see how much your total reserve requirement changes when your return rate fluctuates.
- 03
Get unit return cost
This capability finds the average cost of a single return to help you understand per-unit impact.
- 04
Get return impact by category
This capability breaks down costs into categories to show which specific expenses drive your reserve needs.
Real work
What teams actually run
Cash Flow Planning
Set aside the correct amount of capital by forecasting return costs for the upcoming quarter.
Margin Protection
Calculate how much a single return costs to ensure your pricing covers the expense.
Risk Assessment
Run sensitivity analyses to prepare for seasonal increases in return rates.
Expense Auditing
Break down return costs into categories to see if shipping or damage is the main issue.
One connector, every AI
Return Cost Reserve 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.
Claude
ChatGPT
Gemini
Perplexity
Grok
Microsoft Copilot
Cursor
VS Code
Windsurf
JetBrains
Cline
LangChain
Vercel AI SDK
Lovable
Z.ai
Raycast
Qwen Code
Kimi Code
Le ChatBuilding your own app? The connector is yours to use.
You don't need a client to put Return Cost Reserve 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
896ms average. Fast in production.
Return Cost Reserve is checked daily against the live service.
- Fastest day
- 690ms
- Slowest day
- 1249ms
- 14-day trend
- Stable0%
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 Return Cost Reserve, so you can see the experience inside your AI.
It does not authenticate your account with Return Cost Reserve. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Return Cost Reserve Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_7BDdHMccV7wSVvFlcWvNU5QDzYQu3R5pu0scu7lI/mcpClaude 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 — Return Cost Reserve capabilities are ready to use.
{
"mcpServers": {
"return-cost-reserve-calculator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_7BDdHMccV7wSVvFlcWvNU5QDzYQu3R5pu0scu7lI/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 Return Cost Reserve in Claude and other AIs
Who it's for
Built for the work Return Cost Reserve owners hand off.
This MCP is built for professionals managing retail operations and financial planning who need to account for return volatility.
- 01
E-commerce Finance Manager
Hands off return rate data to the AI to generate cash reserve requirements.
- 02
Operations Analyst
Uses the AI to model how logistics costs like shipping and restocking affect total reserves.
- 03
Retail Controller
Asks the AI to perform sensitivity analysis on return rates to protect company margins.
FAQ
Questions Return Cost Reserve owners ask.
- 01
What can this MCP calculate?
It calculates total capital reserves, per-unit return costs, cost breakdowns by category, and sensitivity analyses for return rate changes.
- 02
Which AI clients can use this MCP?
You can use this MCP with any compatible client like Claude, Cursor, Windsurf, or VS Code.
- 03
How does it handle shipping and restocking costs?
The capabilities incorporate your specific assumptions for shipping, restocking, and damage rates into the total reserve and per-unit cost calculations.
- 04
Can I see which part of the return is most expensive?
Yes, the get_return_impact_by_category capability breaks down expenses to show which specific cost is driving your reserve requirements.
- 05
Do I need to host the MCP myself?
No, Vinkius hosts and manages the MCP for you. You just connect your client and start using the capabilities.
- 06
What is a return reserve?
A return reserve is the amount of capital a business sets aside to cover the costs of processing product returns, including refunds, shipping, and restocking.
- 07
How does the damage rate affect my reserve?
The damage rate accounts for the value lost when items are returned in unsellable condition. A higher damage rate increases the total reserve requirement.
- 08
Can I test different return rate scenarios?
Yes, you can use the get_sensitivity_analysis capability to see how increasing your return rate impacts your total required reserve.
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Connect Return Cost Reserve to Claude, Cursor, ChatGPT & more
