RentBuy.org MCP MCP server

This MCP server provides a Rent vs Buy calculator that allows agents to run 30-year financial comparisons, side-by-side scenario analysis, and sensitivity sweeps. It computes net worth, break-even years, and cash flow using standard defaults and tax tables, returning deterministic results without storing user data.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by RentBuy.org

MCP endpoint (Streamable HTTP)

https://rentbuy.org/api/mcp

Vendor documentation

What you can do with it

Run a 30-year rent vs buy comparison to find the winner and break-even year
Compare up to ten named housing scenarios side by side with deltas
Sweep inputs like down payment to find where the financial winner flips
Open the interactive calculator within the conversation for editable assumptions

Tools advertised by the last live check:

rentbuy_run_scenario
rentbuy_compare_scenarios
rentbuy_sweep
rentbuy_open_calculator

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http rentbuy-org-mcp https://rentbuy.org/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add rentbuy-org-mcp --url https://rentbuy.org/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable rentbuy-org-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "rentbuy-org-mcp": {
      "url": "https://rentbuy.org/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "rentbuy-org-mcp": {
      "type": "streamableHttp",
      "url": "https://rentbuy.org/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start rentbuy-org-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "rentbuy-org-mcp": {
      "type": "http",
      "url": "https://rentbuy.org/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http rentbuy-org-mcp https://rentbuy.org/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "rentbuy-org-mcp": {
      "url": "https://rentbuy.org/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "rentbuy-org-mcp": {
      "serverUrl": "https://rentbuy.org/api/mcp"
    }
  }
}

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