# Shared Purchase Decision Brief AI Agent Connect

> Shared Purchase Decision Brief MCP helps households and groups evaluate, fund, and organize shared purchases. It handles the math for cost splitting, checks if an item actually fits your space and budget, and creates a clear plan for who owns what and how to get it done.

## Overview
- **Category:** productivity
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_TYtxIcNSbiUdBuAtmTyrZgBGsHeRrqkmOebmuOqg/ai-agent-connect
- **Tags:** decision-making, household-management, shared-expenses, budgeting, logistics

## Description

Buying something expensive for a shared space often leads to arguments about money, storage, or who actually owns the item. This MCP changes that by giving your AI client a framework to run through the logic of a group purchase. You can use it to weigh a new appliance against your current budget and available shelf space, or to figure out exactly how much each roommate owes for a new vacuum. It moves beyond simple math by looking at the logistics of ownership and the practical steps needed to finalize a deal. Instead of debating in a group chat, you can ask your agent to run a feasibility check or generate a contribution plan that everyone can agree on. It keeps the financial and physical realities of your home at the center of the decision.

## Tools

### analyze_purchase_feasibility
This tool checks if a purchase makes sense based on your group's specific needs and budget thresholds.

### create_ownership_record
This tool establishes the social or legal ownership status of an item after you buy it.

### formulate_action_plan
This tool builds a list of logistical steps to move a purchase from an idea to a finished task.

### generate_contribution_plan
This tool calculates the exact amount each person needs to pay to cover the cost.

## Prompt Examples

**Prompt:** 
```
Should we buy a new espresso machine? We have $300, 20L of space, and a threshold of 50.
```

**Response:** 
```
The espresso machine is a recommended purchase. It meets the utility threshold with a score of 65, fitting within your storage capacity.
```

**Prompt:** 
```
How much should Alice and Bob pay for a $100 vacuum if they split it equally?
```

**Response:** 
```
Alice will pay $50 and Bob will pay $50.
```

**Prompt:** 
```
What are the next steps after deciding to buy the vacuum?
```

**Response:** 
```
1. Transfer $50 to the primary payer. 2. Clear space in the utility closet. 3. Schedule the purchase for this weekend.
```

## Capabilities

### Feasibility Analysis
Your agent uses this to see if an item fits your budget and physical space.

### Cost Splitting
The AI calculates fair payment amounts for every person involved in the purchase.

### Ownership Tracking
Your agent records who owns the item to prevent future disputes.

### Logistics Planning
The AI generates a checklist of tasks to complete the purchase and setup.

## Use Cases

### Roommate Purchases
Decide if a new couch is worth the cost and how to split the bill.

### Kitchen Upgrades
Check if a high-end espresso machine fits your budget and counter space.

### Shared Tool Kits
Establish who owns a shared set of tools after a group purchase.

### Budget Management
Verify if a planned purchase stays within the household's spending threshold.

## Benefits

- Reduces arguments by using math and logic to settle cost disputes.
- Prevents buying items that won't fit in your current storage space.
- Creates a clear paper trail for who paid for what.
- Turns vague ideas into actionable checklists.

## How It Works

Connect your AI client to Vinkius to start managing your household decisions.

1. Connect your preferred MCP-compatible client to the Vinkius platform.
2. Provide your budget, space constraints, and item details to your agent.
3. Let the agent run feasibility and contribution calculations.
4. Review the generated action plan and ownership records.

## Frequently Asked Questions

**How does this MCP help with splitting costs?**
It uses the generate_contribution_plan tool to calculate exactly how much each person owes based on the total price.

**Can I use this with Claude or Cursor?**
Yes, you can connect this MCP to any MCP-compatible client like Claude, Cursor, or Windsurf via Vinkius.

**Does it account for physical space?**
Yes, the feasibility tool considers your available storage capacity when evaluating a purchase.

**What happens after we decide to buy something?**
The agent can use the formulate_action_plan tool to give you a list of logistical next steps.

**How do we track who owns an item?**
You can use the create_ownership_record tool to establish social or legal ownership status.

**How does the system decide if a purchase is worth it?**
The `analyze_purchase_feasibility` tool calculates a utility score by weighing the item's expected use against its storage and maintenance requirements, then compares it to your set decision threshold.

**Can I split costs between different people?**
Yes, you can use `generate_contribution_plan` to distribute the total cost among all contributors based on their individual limits and agreed-upon ownership rules.

**How is ownership determined?**
Ownership is established using `create_ownership_record`, which assigns equity and control rights based on the financial contributions made by each person.