Quick Answer
Add Realie as a custom MCP connector in Claude (web or desktop) or register the server in Claude Code with the product MCP URL. Claude completes Clerk OAuth in the browser; you do not paste an API key into connector headers. After sign-in and billing setup on a new account, Claude can call Realie’s property tools such as address_lookup and property_search.
Summary
Claude connects to live U.S. property data through Realie’s Streamable HTTP MCP server at https://app.realie.ai/api/mcp. Tool discovery works before sign-in, but property calls require OAuth. Claude Desktop and Claude on the web use Customize → Connectors; Claude Code uses the claude mcp add command documented on Realie’s agents hub.
Step by step
- 1
Claude web or desktop — open Connectors
Go to https://claude.ai/customize/connectors and choose Add custom connector.
- 2
Set the Realie MCP URL
Name the connector Realie and set the server URL to https://app.realie.ai/api/mcp. Choose Sign in now and Use Claude’s published identity. Leave request headers empty. Do not paste an API key.
- 3
Connect and complete Clerk OAuth
Add the connector, enable it in a chat, and choose Connect. Sign up or sign in on accounts.realie.ai, accept terms if prompted, and approve Claude’s access.
- 4
Enable billing on new accounts
If property calls report that billing or API access is required, add a payment method at https://app.realie.ai/developer, then retry a lookup.
- 5
Claude Code — register the server (optional)
Run: claude mcp add --transport http realie https://app.realie.ai/api/mcp. Confirm with claude mcp list, then sign in when the host prompts for OAuth.
- 6
Verify with a property tool
Ask Claude to call address_lookup or property_search for a known U.S. street address and state.
Example prompts (address-based lookups)
“Use Realie to look up 504 Lavaca St, Austin, TX and summarize building characteristics and assessed values from the record.”
“Look up 10663 Fairhaven Way, Orlando, FL and list recorded transfer dates and prices from the property history.”
“Search Winter Park, FL for properties on Park Avenue and return up to ten matches with parcel IDs.”
What it does not return
Realie returns county-sourced property records, not MLS listing feeds, listing photos, or active for-sale inventory from broker systems.
Field availability varies by county and source office. An empty or partial record means the jurisdiction did not publish that attribute for the parcel, not that the connection failed.
The documentation MCP at https://docs.realie.ai/mcp searches Mintlify help pages only. It cannot return live property records.
Sources
Frequently asked questions
- Do I paste a Realie API key into Claude’s connector headers?
- No. Claude uses Clerk OAuth against the product MCP server. API keys are for REST, CI, and hosts that document Bearer authorization—not for connector request headers in Claude.
- Why do tools list before I sign in?
- initialize and tools/list are public on the Realie MCP server. Property calls through tools/call require a valid OAuth session and an account with API access enabled.
- Does Claude Code use the same URL as Claude Desktop?
- Yes. Both use https://app.realie.ai/api/mcp with Streamable HTTP transport.