
Connect Roommate Cost Allocator 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. Split household expenses fairly based on actual living conditions.
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 Roommate Cost Allocator.
- 01
Get area distribution summary
This capability provides a high level overview of how living space is divided among everyone in the house.
- 02
Validate cost integrity
This capability checks that the sum of all individual roommate shares matches the total household cost exactly.
- 03
Calculate rent split
This capability determines the specific monthly financial obligation for each person based on their room size and amenities.
- 04
Simulate amenity impact
This capability lets you model how much the total cost or individual shares change if someone gains or loses a private amenity.
Real work
What teams actually run
Moving into a new house
Determine how much each person should pay based on their specific room size and perks.
Adding a parking spot
See how much the person using the parking spot should contribute compared to others.
Changing room setups
Model the financial impact if a roommate moves into a larger room or gains an amenity.
Verifying monthly totals
Check that the individual roommate payments perfectly cover the total household expenses.
One connector, every AI
Roommate Cost Allocator 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 Roommate Cost Allocator 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
991ms average. Fast in production.
Roommate Cost Allocator is checked daily against the live service.
- Fastest day
- 740ms
- Slowest day
- 1123ms
- 14-day trend
- Slowing+19%
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 Roommate Cost Allocator, so you can see the experience inside your AI.
It does not authenticate your account with Roommate Cost Allocator. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.
Roommate Cost Allocator Connector
You're all set. Choose your MCP client and follow the setup instructions.
https://edge.vinkius.com/vk_preview_lZlmQLZvdFytSLxbquIQ6Zb45GqzQQnFVHLfohqM/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 — Roommate Cost Allocator capabilities are ready to use.
{
"mcpServers": {
"roommate-cost-allocator-mcp": {
"url": "https://edge.vinkius.com/vk_preview_lZlmQLZvdFytSLxbquIQ6Zb45GqzQQnFVHLfohqM/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 Roommate Cost Allocator in Claude and other AIs
Who it's for
Built for the work Roommate Cost Allocator owners hand off.
This is for anyone living in shared housing who wants to remove the guesswork from monthly bills.
- 01
Roommates
People living together who want a fair, math-based way to split costs.
- 02
Property Managers
Professionals who need to provide clear cost breakdowns to tenants.
- 03
Budgeters
Individuals managing household finances through an AI agent.
FAQ
Questions Roommate Cost Allocator owners ask.
- 01
How does this MCP calculate rent?
It uses specific inputs like room square footage, private amenities, and parking usage to determine individual shares.
- 02
Can I include parking costs?
Yes, the capability handles parking costs as part of the total household obligations.
- 03
What AI clients can I use with this?
You can use this MCP with any compatible client like Claude, Cursor, or Windsurf.
- 04
Does it handle utilities?
Yes, utilities can be included in the calculation alongside rent and parking.
- 05
How do I know the math is right?
The validate_cost_integrity capability checks that the sum of all individual shares matches the total household cost.
- 06
How is the rent split calculated?
The split uses calculate_rent_split to weigh costs based on private square footage, adding premiums for amenities and specific costs for parking.
- 07
Can I see how a new balcony would affect the rent?
Yes, you can use simulate_amenity_impact to see how adding or removing a private amenity changes the total cost and individual shares.
- 08
How do I know if the math is correct?
You can run validate_cost_integrity to verify that the sum of all individual shares matches the total expected household cost.
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Connect Roommate Cost Allocator to Claude, Cursor, ChatGPT & more
