Rex Software MCP by usefulapi

Rex Software MCP by usefulapi

Connect

• Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://rex-software.usefulapi.io/mcp.
• Claude Code: claude mcp add --transport http rex-software https://rex-software.usefulapi.io/mcp, then run /mcp to log in.
• VS Code: Add to VS Code.
• Cursor and other clients: add the URL as a remote MCP server:

{
  "mcpServers": {
    "rex-software": {
      "url": "https://rex-software.usefulapi.io/mcp"
    }
  }
}

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Rex Software credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/rex-software/

Tools

Tool	Type	What it does
rex_get_user_profile	read	Get the signed-in Rex user
rex_list_accessible_accounts	read	List the Rex accounts the user can access
rex_describe_search_fields	read	List the search fields of a Rex service
rex_list_value_lists	read	List the Rex value lists
rex_get_value_list	read	Get the values of a Rex value list
rex_autocomplete_contacts	read	Find contacts by name
rex_autocomplete_listings	read	Find listings by address
rex_search_contacts	read	Search contacts
rex_search_listings	read	Search listings
rex_search_properties	read	Search properties
rex_search_leads	read	Search leads
rex_search_appraisals	read	Search appraisals
rex_search_tenancies	read	Search tenancies
rex_search_reminders	read	Search reminders and tasks
rex_search_appointments	read	Search appointments
rex_search_notes	read	Search notes
rex_search_deals	read	Search deals
rex_search_activities	read	Search activities
rex_search_listing_events	read	Search listing events
rex_search_users	read	Search users
rex_search_campaigns	read	Search campaigns
rex_get_contact	read	Get a contact
rex_get_listing	read	Get a listing
rex_get_property	read	Get a property
rex_get_lead	read	Get a lead
rex_get_appraisal	read	Get an appraisal
rex_get_tenancy	read	Get a tenancy
rex_get_note	read	Get a note
rex_get_deal	read	Get a deal
rex_get_reminder	read	Get a reminder
rex_create_contact	write	Create a person contact
rex_create_note	write	Create a note
rex_create_reminder	write	Create a reminder
rex_usage_status	meta	Usage status (free-tier meter)
rex_request_feature	meta	Request a missing feature
rex_upgrade	meta	Upgrade to Pro or Pro+
rex_cancel_subscription	meta	Cancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

Plan	Price	Limit
Free (per Rex user and region)	$0	50 tool calls / month
Pro (per Rex user and region)	$9/mo or $90/yr (2 months free)	Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with rex_upgrade (it returns a Stripe Checkout link). Cancel any time with rex_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running rex_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT

Account access and data

Use a dedicated agency-invited integration user with only the privileges needed. It may consume a paid agency seat. Rex Verified Integrator status covers seat-fee benefits and sandbox eligibility; this connection uses the documented ordinary live-account integration flow. Choose Australia/New Zealand or the UK and, if needed, an account id. Vendor charges are separate.

Credentials are encrypted. Requested contacts, property and tenancy details, notes and tasks reach the connected AI client and its LLM provider. Connect only records you are authorized to process there. Disconnect UsefulAPI to stop its connection. Password changes stop new sign-ins; issued tokens may remain valid until vendor expiry/revocation. We request one-hour tokens, but API activity can extend them. Billing follows Rex user id and region across that user's accounts.

Only three writes are exposed: create a person contact, an internal note or a reminder. They require a positive created id to report success. No operation is automatically replayed; check Rex before repeating an uncertain create. Notes/reminders may be visible to agency colleagues and interact with configured workflows. No message-send API is exposed. Reminder completion remains unavailable pending a verified success response.

All 33 tools were checked against current vendor documentation and local mocks. No real customer reads or business writes were tested.