Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 10 Solid coverage with minor gaps

Reapit AgencyCloud Desktop APIA custom URI-scheme API, not an HTTP API, used by AppMarket web applications hosted inside the AgencyCloud ...57.9 Reapit Foundations GraphQL APIA GraphQL proxy over the Foundations Platform REST API, released publicly out of internal beta and used in ...57.9 Reapit Foundations MCP Server (Alpha)An alpha Model Context Protocol server exposing the Foundations platform to AI agents over Streamable HTTP ...57.9 Reapit Foundations Notifications APIAn inbound API that lets a third-party application push real-time event notifications into Reapit products ...57.9 Reapit Foundations Platform REST APIThe core Foundations REST API over the Reapit agency CRM data platform. It is documented as a hypermedia RE...57.9 Reapit Foundations WebhooksReal-time outbound event delivery from the Reapit CRM to an endpoint you host. Webhooks are created either ...57.9 Bridge Webhooks APIManage webhook endpoints that receive real-time POST events from Bridge for listing create/update/delete an...56.9 ReefAPI MCP ServerHosted MCP server over streamable-HTTP with 5 discovery-first tools (search_engines, get_catalog, get_engin...56.9 ReefAPI REST APIPOST-based REST/JSON API fronting a catalog of web-data engines. Auth via x-api-key header; uniform {ok,dat...56.9 Zillow Group Data (ZG Data) APIZillow Group Data feeds delivered through Bridge — parcels, assessments, transactions, and Zillow Group Eco...56.9

Developing 41 Usable, with meaningful gaps to close

Lucernex REST APIRESTful API for Accruent Lucernex IWMS / lease accounting. Documented on the public customer help site, but...53.7 Spark APIFBS's proprietary REST API over Flexmls MLS content. Documented services include Listings (plus photos, doc...52.2 Spark RESO Web APISpark's implementation of the RESO Web API, exposed as an OData service at the /Reso/OData endpoint and ser...52.2 Spark WebhooksOutbound webhook delivery from the Spark platform. When a Property, Member or Office record changes in an u...52.2 Agora Website Content APIThe anonymous, read-mostly content API behind agorareal.com. The marketing site is a headless WordPress ins...49.9 realestate.com.au Listing Feed (REAXML)REA Group's REAXML listing feed - the long-standing industry-standard XML property schema used by Australia...49.0 realestate.com.au Partner PortalThe realestate.com.au Partner Portal is REA Group's integration surface for agencies and their software / C...49.0 First American ClearSearch APISubmit a ClearSearch title search order and retrieve its status and report. Swagger 2.0, 3 operations.47.9 First American Ownership APIOwnership information used to assess properties owned by borrowers, occupancy issues and foreclosure activi...47.9 First American Property APINationwide property data — property basic and extended characteristics, assessor tax and legal description,...47.9 First American Title & Settlement (Mortgage Services) APIOpen, track and cancel First American title and escrow orders, exchange documents and messages with the esc...47.9 ICE Mortgage Technology Developer PortalThe ICE Mortgage Technology Developer Portal is a self-service solution providing developers with resources...46.3 Regrid Daily Ownership Updates APIAPI providing current owner information and deeded property details with daily refresh cycles for up-to-dat...44.8 ZenRows Scraper APIsVertical, structured-data scraper endpoints for major commerce and real-estate sites, sharing the api.zenro...43.5 Trestle Direct Web APIA bidirectional OData interface into the Matrix MLS database, separate from the RESO feed. The CRM referenc...41.7 Trestle Participant Reporting APIA compliance API that lets technology providers report to each MLS which brokers they hold contracts with —...41.7 Trestle RESO Web APIThe primary Trestle interface — a RESO Web API 2.0 / OData 4.0 endpoint that republishes MLS data mapped to...41.7 Trestle RETSTrestle's legacy Real Estate Transaction Standard interface, documented as compliant with RETS 1.8. RESO no...41.7 Anywhere Agent Recruiting APIAn endpoint for third-party CRM integration partners to deliver recruiting activities into Anywhere's iPros...41.4 Anywhere Back Office Management APIWrite and update data into Anywhere systems, covering Listing, Transaction, Agent, Team, Office and Company...41.4 Anywhere BackOffice Read-only APIRead-only access to Anywhere back-office data from the Dash platform, including listing, transaction, agent...41.4 Anywhere Consumer Journey APITrack a consumer's real estate transaction end to end, giving buyers visibility into the closing process wi...41.4 Anywhere Dynamic Search APIReal-time search over Anywhere listing details for applications that do not maintain a local data store. Do...41.4 Anywhere Earnest Money APIManage and access earnest money data for brokered trades: payee search, buyer and seller retrieval for a de...41.4 Anywhere Leads Engine APIHandles ingestion, routing and assignment of leads for Anywhere brands. Listed on the developer portal home...41.4 Anywhere Leads Management APIPowers third-party CRM applications to sync lead data with Anywhere source systems so agents can manage lea...41.4 Anywhere Listing Extensions APIA bundle of APIs for listings submitted through external and internal products, enhancing property listings...41.4 Anywhere Listing Metric APIListing management metric information for Anywhere franchise brands, including video views, virtual tour vi...41.4 Anywhere Listing Syndication APISynchronize marketing data for all Anywhere franchise brands and the brokerage group to an external system....41.4 Anywhere Listings Promotions APISynchronize promotion data from Anywhere, covering channels, publication lists in each channel, nominated l...41.4 Anywhere Marketing - Franchise APISynchronize marketing data for all Anywhere franchise brands and brokerages, including Corporate Staff, Com...41.4 Anywhere Marketing and Transactions APISynchronize Anywhere marketing data together with franchise brokerage production (transaction) details. Mar...41.4 Anywhere Master Data (MDM) APIA bundle of APIs representing clean, curated master data for Agent, Office, Company, Staff and Listings ent...41.4 Anywhere MLS Data Service APIEndpoints for MLS listings data assembled by Anywhere's MLS Data Platform (MDP), which downloads, processes...41.4 Anywhere RealVitalize APIAllows HomeAdvisor to integrate its backend services with the RealVitalize backend — accessing enrollment i...41.4 Anywhere Referral Leads APISubmit a new lead to Anywhere's referral platform for a specific real estate referral program and share sta...41.4 Anywhere Referral Partner Integration APISubmit a new lead to Anywhere's referral platform for a specific real estate referral program, creating a c...41.4 Anywhere Relocation Authorization APILets corporate clients trigger new relocation initiations or authorizations into Cartus. Authorizations are...41.4 Anywhere Settlement Company APIExposes Anywhere Integrated Services settlement companies and their details, letting a consuming applicatio...41.4 Anywhere Transactions - Franchise APISynchronize brokerage production (transaction) data from Anywhere, including Sale and Other Income transact...41.4 Anywhere User Access Management APIBuild and manage user access to Anywhere brand extranet applications and build user access reports. Exposes...41.4

Thin 22 Limited public surface area

Microburbs APIThe Microburbs Property Data API: 173 metered, read-only REST operations for Australian property and suburb...39.0 Sprift Data and API (v2, advertised)The API family Sprift advertises on its Data and API product page, recorded here as advertised and NOT as v...38.6 Homeowners Insurance APIThe State Farm Homeowners Insurance API enables mortgage lenders, real estate platforms, and partner networ...37.8 Bridge Interactive APIBridge Interactive is Zillow Group's RESO-compliant data distribution platform for MLSs, brokers, and appro...36.5 Zillow ShowcaseZillow Showcase is a premium listing enhancement product for agents and MLSs that integrates immersive medi...36.5 Zillow Tech ConnectZillow Tech Connect is the partner program that lets approved real-estate software vendors integrate with Z...36.5 Zillow Web Services (Historical / Sunset)Zillow Web Services were the legacy public XML-based APIs from Zillow including GetSearchResults, GetZestim...36.5 Datafiniti Property Data APIAccess a large catalog of real estate listings from dozens of websites, integrated with pricing data, ameni...35.3 CBRE Real Estate APIReal Estate operations34.2 Offerpad Helix API (private customer backend)Offerpad's real transaction API, and it is closed. Discovered on 2026-07-26 as the API_URL constant compile...33.8 Trulia API (Historical / Sunset)The Trulia API was a suite of public XML/JSON endpoints that exposed listings, property details, location l...33.8 Zillow Group APIs (Successor)Programmatic access to data that historically lived behind the Trulia API is now delivered through Zillow G...33.8 Taylor Morrison Design Studio APIDigital design studio API supporting home personalization including structural options, exterior design sel...32.4 Taylor Morrison Home Funding APITaylor Morrison Home Funding (TMHF) provides mortgage loan origination services integrated with the homebuy...32.4 MRI Information Exchange (MIX) APIAn open and connected ecosystem of secure REST APIs built by MRI and its partners that enables controlled d...30.3 Realtor.com Connections Plus APIThe Realtor.com Connections Plus API provides a direct connection between the Realtor.com lead delivery sys...30.3 Realtor.com Lead Delivery APIThe Realtor.com Lead Delivery API is an end-to-end integration layer that delivers real estate leads direct...30.3 ARGUS DeveloperReal estate development feasibility and project management software for property developers, appraisers, an...29.3 BXP WordPress REST APIThe WordPress REST API served by BXP's corporate website at https://www.bxp.com/wp-json — 332 routes across...29.2 Rightmove Real Time Data Feed APIThe Real Time Data Feed (RTDF) is Rightmove's incremental HTTPS/JSON interface for UK sales, lettings and o...27.9 ARGUS Developer APIAltus Group publishes no public API, OpenAPI or developer program for ARGUS Developer. Probed 2026-09-06: n...26.7 Opendoor for AgentsOpendoor for Agents is the partner program that lets licensed real-estate agents submit clients to Opendoor...26.7

Emerging 12 Early or largely undocumented

Qualia APIThe Qualia API is a read-write GraphQL API over the Qualia title, escrow and closing platform. It lets part...24.3 Propertybase GO APIJSON REST API for the Propertybase GO / Lone Wolf Front Office real estate CRM. Read and write CRM records ...23.2 Casavo Virtual Tools (Realisti.co) APIVersioned REST API behind Realisti.co, the virtual-tour and property-imaging platform Casavo operates as Ca...22.8 DoorLoop APIREST API for DoorLoop property management software. Provides access to properties, units, leases, tenants, ...22.2 MSCI Real Estate Performance and Risk Data APIReal estate index and market data API covering property fund and asset performance and risk data across glo...20.6 Agentbox APIThe production Agentbox (Reapit Sales) REST API used by approved integration partners to read and write age...20.3 Landlord Studio APILandlord Studio provides a property management platform with capabilities for managing rental properties, t...20.2 EmporisGlobal building data and imagery provider covering high-rise and commercial structures.19.4 PadMapper Rental ListingsPadMapper provides a web-based rental listing search service covering apartments, houses, condos, and rooms...19.0 Follow Up Boss APIREST API for managing real estate leads, contacts, deals, notes, tasks, calls, text messages, events, and w...18.6 Property Capsule Developer APIProperty Capsule's Developer API, announced live on 2020-06-18 in the company's public release notes: "Our ...14.4 PlotAPI REST APISingle REST surface for vehicle specifications, VIN history, MOT records, parts fitment, valuations and pro...12.4

Minimal 3 Almost no public developer surface

Rayonier APIThe Rayonier API provides access to platform services and data for enterprise integration and automation.10.6 UBS key4 Mortgages APIThe UBS key4 mortgages API lets property platforms and brokers embed Swiss mortgage origination, affordabil...10.4 LightBoxPower your digital workflows using comprehensive property and location intelligence data from LightBox.10.2

Companies reaching this through an API (8)

These companies publish an API, specification or operation carrying “Real-Estate” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

ARGUS CoStar Group Datafiniti Intercontinental Exchange Realtor State Farm UBS ZenRows

Score breakdown

Frequency

77.7

log-scaled weighted occurrences

Breadth

16.4

spread across providers

Quality lift

21.3

mean composite of providers using it

Cohesion

8.7

strength of nearest seed neighbor

Where this tag comes from

Provider tag597

Api tag90

Openapi tag1

Openapi op tag1

Cohort brief

Auto-generated

The 544 providers in the APIs.io catalog tagged Real-Estate, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

544

all scored

Mean Kin Score

19.5

-4.4 vs catalog 23.9

Mean Agent Readiness

9.1

-2.9 vs catalog 12

Spread

1.2–67.9

median 13.3 · σ 14.9

How the 544 split by band

Exemplar 1Strong 14Developing 62Thin 70Emerging 200Minimal 197

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	25.8	26.5	-0.7	544
Discoverability	59.2	61.2	-2	544
Contract Governance	4.1	6.4	-2.3	544
Operational Transparency	9	14	-5	544
Developer Ergonomics	16.9	23.4	-6.5	544
Contract Quality	13.2	19.8	-6.6	544

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes

Artifact	This cohort	Catalog	Difference
MCP server (any)	7%	10%	-3
MCP server (first-party)	10%	13%	-3
Agent Skills	0%	0%	0
OAuth scopes	11%	11%	0
Security	97%	97%	0
Arazzo workflows	2%	2%	0
Governance rules	3%	14%	-11

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score

1 Lev 67.9
2 Aedifion 65.8
3 Zillapi 61.7
4 SignSealShip Partner API 61.6
5 Goodlord 60.7
6 Yardi Canada 60.1
7 CoreLogic (Cotality) 59.5
8 First Street 59.1
9 Ordnance Survey 57.9
10 Reapit 57.9

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/real-estate"

All tags

curl "https://apis.io/api/v1/tags?limit=25"

As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/real-estate"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/real-estate/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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Real-Estate

Providers using this tag (597)

APIs with this tag (88)