Rex Software MCP by usefulapi

io.usefulapiPublished by usefulapi.ioOfficial publisherv1.8.4Updated Nov 7, 2026

Read contacts, listings, tenancies and tasks; create a person contact, note or reminder.

The publisher's own server: Ably MCP by usefulapi

VerifiedStreamable HTTPWeb executableProductivity & Workflow Business & Commerce

Server details

Identifier: io.usefulapi/rex-software
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Oct 31, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to usefulapi.io, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

Connects an assistant to Rex Software real-estate CRM data: search and read contacts, listings, properties, leads, tenancies and deals, and create a contact…

What you can do: Look up and search contacts, listings and properties, with autocomplete by name or address
Search leads, appraisals, tenancies, deals, campaigns, activities and listing events
Search reminders, appointments, notes and agency staff users
Read a single record in full by id for each of those record types
Inspect searchable fields and value lists to build correct filters
Create a person contact, an internal note or a follow-up reminder
When to use it: Useful when an assistant should answer questions or draft follow-ups from a Rex agency account — for example finding a contact and their notes, listing current properties in a suburb, or checking which leads arrived this week and who owns them.
Requirements: Remote MCP endpoint added by URL only; no API key or Authorization header in the client config. Sign-in is via OAuth with the user's Rex Software credentials, choosing region (Australia/New Zealand or UK) and, if needed, an account id. A Rex account with the needed privileges is required; a paid agency seat may be consumed.

Before you install

Requested contacts, property and tenancy details, notes and tasks are sent to the connected AI client and its LLM provider, so connect only records you are authorized to process there. Three write tools create a contact, note or reminder; notes and reminders may be visible to colleagues and trigger agency workflows, and creates are not retried, so check Rex before repeating an uncertain create. Usage is metered: 50 calls a month free, then paid Pro/Pro+ plans billed through Stripe, with vendor…

Installation

In SourceWeft

Open Rex Software MCP by usefulapi in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.usefulapi%2Frex-software/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "rex-software-by-usefulapi": {
      "type": "http",
      "url": "https://rex-software.usefulapi.io/mcp"
    }
  }
}

README

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:

json

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

{  "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

*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.

Source: servers/rex-software/README.md at commit 4046075

Tools

rex_get_user_profile

Get the signed-in Rex user

The Rex user this server is signed in as: user id, name, email, whether they own the account, position and default office. Good first call. POST /v1/rex/UserProfile/read.

Takes no parameters.

rex_list_accessible_accounts

List the Rex accounts the user can access

The Rex agency accounts (account_id and name) this user can sign in to. A user with several accounts picks one with the Account id field when connecting. POST /v1/rex/UserProfile/getAccessibleAccounts.

Takes no parameters.

rex_describe_search_fields

List the search fields of a Rex service

The field names a search on the given service accepts in criteria, each with its label, type and (for enums) the value list. Call this before building criteria on a field you are not sure of. Sorting (order_by) uses a separate list of sortable fields whose names can differ (for example name_last, not contact.name_last): set include_order_by to get it. POST /v1/rex/<Service>/describeSearchFields (and <Service>/describeModel for include_order_by).

Parametersmatchservicerequiredinclude_order_by

rex_list_value_lists

List the Rex value lists

The names of Rex's value lists (the allowed ids for fields such as note types, reminder types, lead sources and property categories). Use a name with rex_get_value_list. POST /v1/rex/SystemValues/getValueCategories.

Takes no parameters.

rex_get_value_list

Get the values of a Rex value list

The allowed values (id and label) of one value list, for example property_category. The ids are what writes and criteria expect. POST /v1/rex/SystemValues/getCategoryValues.

Parameterslist_namerequired

rex_autocomplete_contacts

Find contacts by name

Quick lookup of contacts by (part of) a name: returns the best matches with id, name, email and phone. Use the id with rex_get_contact. POST /v1/rex/Contacts/autocomplete.

Parameterslimitsearch_stringrequired

rex_autocomplete_listings

Find listings by address

Quick lookup of listings by (part of) an address: returns the best matches with listing id and address. Use the id with rex_get_listing. POST /v1/rex/Listings/autocomplete.

Parameterslimitsearch_stringrequiredlisting_states

rex_search_contacts

Search contacts

Search contacts (people and companies). Filters (criteria) combine with AND; results are paged with offset/limit (next_offset says where to continue). Useful fields: contact.name_full, contact.name_first, contact.name_last, contact.email_address, contact.phone_number, contact.type, contact.tags, contact.interest_level, contact.last_contacted_date, system_modtime. To find someone by name, rex_autocomplete_contacts is simpler. POST /v1/rex/Contacts/search.