Connect your AI in 30 seconds

Claude Desktop and claude.ai share the same connector system — add REIzer once and it's available in your chats. Available from Free through Enterprise; Free accounts are limited to one custom connector.

Step 1: Open connector settings

Open settings and find Connectors in the left nav — it sits under the Customize heading, below the Settings group (older Claude Desktop builds list it under Settings instead). Then the Add button at the top right → Add custom connector.

Step 2: Fill in both fields

The dialog asks for a name and a URL — both are required. Nothing under Advanced settings (OAuth client ID/secret) is needed; REIzer's core tools are unauthenticated.

https://reizer.io/mcp

Step 3: Check the tool permissions

Claude opens REIzer's connector page and groups the tools by what they do — it reads the safety declarations the server publishes:

Both groups default to Needs approval, so Claude asks before each call. If you'd rather it just run, switch a group to Always allow from the dropdown on the right. Nothing REIzer exposes deletes or changes anything you own — the "write" label is the report page.

Step 4: Run it

In a new chat, ask: "Underwrite this rental with REIzer: $285K purchase, $3,100/mo rent, 25% down at 6.75%." Approve the tool call and you should get a 95/100 score, $624.77/mo cash flow, DSCR 1.45, and a report link.

Optional: use your personal connector link

This dialog has no field for custom headers, so the usual X-API-Key route isn't available here. Instead, paste your personal connector link as the URL — same key, carried in the address:

https://reizer.io/mcp/rz_live_…  ← your key, from Settings → API keys

Get yours under Settings → API keys (shown with every key you create). Two reasons it's worth doing: the tool list grows from four to six — pull_comps and str_market_data appear — and your analysis calls move off the shared pool below onto your own account budget. Treat the link like a password — revoking the key kills it.

ChatGPT reaches MCP servers through custom plugins (the feature is called connectors in some builds), which live behind developer mode. Verified on ChatGPT for web — the phone apps don't expose it. Walked through end to end on a Free account, so a paid plan is not required to add one.

Step 1: Turn on developer mode

Settings → Security and login → Developer mode — switch it on. (Settings → Plugins → Developer mode is a shortcut to the same toggle.) ChatGPT flags it as elevated risk because custom plugins are unreviewed code; that warning is about the feature, not about any particular server.

Step 2: Open the new-plugin form

Settings → Plugins → Browse plugins, then the + button at the top right of the directory, next to the search box.

Step 3: Fill in the form

Tick I understand and want to continue — the Create button stays greyed out until you do — then click Create.

Step 4: Verify the connection

The plugin's page opens with an Actions list showing the four free tools: analyze_deal, best_use, solve_max_offer, list_strategies. (pull_comps and str_market_data appear only when the URL carries a key — see below.) Then, in a new chat with REIzer enabled, ask:

> Underwrite this rental with REIzer: $285K purchase, $3,100/mo rent,
  25% down at 6.75%.

Called analyze_deal

Strong — 96/100. $637/mo cash flow, DSCR 1.46, 8.5% cap rate.
Full report: reizer.io/report.html?id=…

Optional: use your personal connector link

The form has no field for custom headers, so the usual X-API-Key route isn't available here. Paste your personal connector link in the URL field instead — same key, carried in the address:

https://reizer.io/mcp/rz_live_…  ← your key, from Settings → API keys

Get yours under Settings → API keys (shown with every key you create). It unlocks pull_comps and str_market_data, and moves your analysis calls off the shared pool below onto your own account budget. Treat the link like a password — revoking the key kills it.

Cursor accepts an install link, which makes it the quickest client here — nothing to create, nothing to paste.

Step 1: Click the install link

Use the Add to Cursor button at the top of this page. Cursor comes to the front with an Install MCP Server? dialog, already filled in:

Click Install. It lands under Home MCP Servers — available in every project. Cursor also has project-level and Cloud scopes if you'd rather keep it to one repo.

Step 2: Verify the connection

Cursor Settings → Tools & MCPs (Cursor is migrating this page to Customize, so look there if it has moved). reizer should show a green dot and "4 tools enabled". Four is right: the two licensed-data tools appear only once the connection carries an API key.

Then ask the agent: "Underwrite this rental with REIzer: $285K purchase, $3,100/mo rent, 25% down at 6.75%."

Prefer to do it by hand?

Both alternatives are equivalent — the install link just writes this config for you:

• Cursor Settings → Tools & MCPs → Add Custom MCP, then fill in the same three fields.
• Or create the file yourself — ~/.cursor/mcp.json for every project, .cursor/mcp.json inside one repo. Neither exists by default.

{
  "mcpServers": {
    "reizer": { "url": "https://reizer.io/mcp" }
  }
}

VS Code's Copilot agent mode speaks MCP via a workspace config file.

Step 1: Create the config

Add .vscode/mcp.json to your workspace:

{
  "servers": {
    "reizer": { "type": "http", "url": "https://reizer.io/mcp" }
  }
}

Step 2: Verify the connection

Open Copilot chat in agent mode — the REIzer tools appear in the tools picker.

Any agent framework or client that speaks MCP over streamable HTTP connects with just the URL — no OAuth, no session state. initialize negotiates 2025-06-18, 2025-03-26, or 2024-11-05:

{
  "mcpServers": {
    "reizer": { "type": "http", "url": "https://reizer.io/mcp" }
  }
}