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 →

Exemplar 1 Complete, well-documented, and agent-ready

FeedOracle Technologies Real Estate APIThe Real Estate API from FeedOracle Technologies — 3 operation(s) for real estate.74.3

Strong 8 Solid coverage with minor gaps

edinetdb-jp Real Estate APIThe Real Estate API from edinetdb-jp — 2 operation(s) for real estate.65.2 MRI Information Exchange (MIX) APIAn open and connected ecosystem of secure REST APIs built by MRI and its partners that enables controlled d...62.6 ReefAPI MCP ServerHosted MCP server over streamable-HTTP with 5 discovery-first tools (search_engines, get_catalog, get_engin...60.7 ReefAPI Real Estate APIThe Real Estate API from ReefAPI — 57 operation(s) for real estate.60.7 Spark APIFBS's proprietary REST API over Flexmls MLS content. Documented services include Listings (plus photos, doc...59.3 Spark RESO Web APISpark's implementation of the RESO Web API, exposed as an OData service at the /Reso/OData endpoint and ser...59.3 Spark WebhooksOutbound webhook delivery from the Spark platform. When a Property, Member or Office record changes in an u...59.3 Lucernex REST APIRESTful API for Accruent Lucernex IWMS / lease accounting. Documented on the public customer help site, but...57.7

Developing 16 Usable, with meaningful gaps to close

Coin Railz Real Estate APIProperty and construction analytics54.2 MoveHome.org A2A Agent Registry APIPublic registry of real-estate A2A agents operated by MoveHome, exposed two ways. REST under https://moveho...53.1 MoveHome.org A2A Property AgentAgent2Agent (A2A 0.3.0) surface: an agent card served from https://movehome.org/.well-known/agent-card.json...53.1 MoveHome.org Property MCP ServerRemote Model Context Protocol server at https://movehome.org/mcp (alias /api/mcp): stateless Streamable HTT...53.1 realestate.com.au Listing Feed (REAXML)REA Group's REAXML listing feed - the long-standing industry-standard XML property schema used by Australia...52.2 realestate.com.au Partner PortalThe realestate.com.au Partner Portal is REA Group's integration surface for agencies and their software / C...52.2 ChatHome Protected Agent APIAuthenticated endpoint returning full property estimate reports, using the same contract and AI quota as th...51.4 Cook County (Chicago) Property Records MCP ServerA live remote MCP server at https://api.ingest0r.com/mcp (streamable-http, JSON-RPC 2.0 over HTTP POST, pro...49.6 FastAF Real Estate APIThe real-estate API from FastAF — 1 operation(s) for real-estate.47.6 ICE Mortgage Technology Developer PortalThe ICE Mortgage Technology Developer Portal is a self-service solution providing developers with resources...44.4 Trestle Direct Web APIA bidirectional OData interface into the Matrix MLS database, separate from the RESO feed. The CRM referenc...43.4 Trestle Participant Reporting APIA compliance API that lets technology providers report to each MLS which brokers they hold contracts with —...43.4 Trestle RESO Web APIThe primary Trestle interface — a RESO Web API 2.0 / OData 4.0 endpoint that republishes MLS data mapped to...43.4 Trestle RETSTrestle's legacy Real Estate Transaction Standard interface, documented as compliant with RETS 1.8. RESO no...43.4 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...43.3 Bridge Interactive APIBridge Interactive is Zillow Group's RESO-compliant data distribution platform for MLSs, brokers, and appro...40.5

Thin 40 Limited public surface area

Anywhere Agent Recruiting APIAn endpoint for third-party CRM integration partners to deliver recruiting activities into Anywhere's iPros...39.0 Anywhere Back Office Management APIWrite and update data into Anywhere systems, covering Listing, Transaction, Agent, Team, Office and Company...39.0 Anywhere BackOffice Read-only APIRead-only access to Anywhere back-office data from the Dash platform, including listing, transaction, agent...39.0 Anywhere Consumer Journey APITrack a consumer's real estate transaction end to end, giving buyers visibility into the closing process wi...39.0 Anywhere Dynamic Search APIReal-time search over Anywhere listing details for applications that do not maintain a local data store. Do...39.0 Anywhere Earnest Money APIManage and access earnest money data for brokered trades: payee search, buyer and seller retrieval for a de...39.0 Anywhere Leads Engine APIHandles ingestion, routing and assignment of leads for Anywhere brands. Listed on the developer portal home...39.0 Anywhere Leads Management APIPowers third-party CRM applications to sync lead data with Anywhere source systems so agents can manage lea...39.0 Anywhere Listing Extensions APIA bundle of APIs for listings submitted through external and internal products, enhancing property listings...39.0 Anywhere Listing Metric APIListing management metric information for Anywhere franchise brands, including video views, virtual tour vi...39.0 Anywhere Listing Syndication APISynchronize marketing data for all Anywhere franchise brands and the brokerage group to an external system....39.0 Anywhere Listings Promotions APISynchronize promotion data from Anywhere, covering channels, publication lists in each channel, nominated l...39.0 Anywhere Marketing - Franchise APISynchronize marketing data for all Anywhere franchise brands and brokerages, including Corporate Staff, Com...39.0 Anywhere Marketing and Transactions APISynchronize Anywhere marketing data together with franchise brokerage production (transaction) details. Mar...39.0 Anywhere Master Data (MDM) APIA bundle of APIs representing clean, curated master data for Agent, Office, Company, Staff and Listings ent...39.0 Anywhere MLS Data Service APIEndpoints for MLS listings data assembled by Anywhere's MLS Data Platform (MDP), which downloads, processes...39.0 Anywhere RealVitalize APIAllows HomeAdvisor to integrate its backend services with the RealVitalize backend — accessing enrollment i...39.0 Anywhere Referral Leads APISubmit a new lead to Anywhere's referral platform for a specific real estate referral program and share sta...39.0 Anywhere Referral Partner Integration APISubmit a new lead to Anywhere's referral platform for a specific real estate referral program, creating a c...39.0 Anywhere Relocation Authorization APILets corporate clients trigger new relocation initiations or authorizations into Cartus. Authorizations are...39.0 Anywhere Settlement Company APIExposes Anywhere Integrated Services settlement companies and their details, letting a consuming applicatio...39.0 Anywhere Transactions - Franchise APISynchronize brokerage production (transaction) data from Anywhere, including Sale and Other Income transact...39.0 Anywhere User Access Management APIBuild and manage user access to Anywhere brand extranet applications and build user access reports. Exposes...39.0 Homeowners Insurance APIThe State Farm Homeowners Insurance API enables mortgage lenders, real estate platforms, and partner networ...39.0 ClickDrag Finance Cost Segregation APIQuote, price and request a cost segregation workpaper or study on US rental and commercial property.38.2 Qualia APIThe Qualia API is a read-write GraphQL API over the Qualia title, escrow and closing platform. It lets part...35.3 Rightmove Real Time Data Feed APIThe Real Time Data Feed (RTDF) is Rightmove's incremental HTTPS/JSON interface for UK sales, lettings and o...35.0 CBRE Real Estate APIReal Estate operations34.3 Datafiniti Property Data APIAccess a large catalog of real estate listings from dozens of websites, integrated with pricing data, ameni...33.2 ZenRows Scraper APIsVertical, structured-data scraper endpoints for major commerce and real-estate sites, sharing the api.zenro...33.1 Regrid Daily Ownership Updates APIAPI providing current owner information and deeded property details with daily refresh cycles for up-to-dat...32.9 SteadyAPIREST/JSON API providing stock market, options, crypto, real estate, sports, e-commerce, social media, trave...31.7 Rayonier GIS Services (ArcGIS REST)Rayonier's self-managed ArcGIS Enterprise 11.5 server (portalDeploymentType ArcGISEnterprise, single tenant...31.3 CoworkingView MCP ServerHosted MCP server (Streamable HTTP) exposing 10 read-only tools for searching, comparing and fetching cowor...31.1 ARGUS DeveloperReal estate development feasibility and project management software for property developers, appraisers, an...30.8 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...28.4 Taylor Morrison Design Studio APIDigital design studio API supporting home personalization including structural options, exterior design sel...28.3 Taylor Morrison Home Funding APITaylor Morrison Home Funding (TMHF) provides mortgage loan origination services integrated with the homebuy...28.3 HelpMyAgent Real Estate APIReal estate APIs27.4 Zillow Group Data (ZG Data) APIZillow Group Data feeds delivered through Bridge — parcels, assessments, transactions, and Zillow Group Eco...27.2

Emerging 18 Early or largely undocumented

dataleads-pro Realestate APIThe Realestate API from dataleads-pro — 1 operation(s) for realestate.25.8 1gateway Realestate APIThe Realestate API from 1gateway — 2 operation(s) for realestate.24.3 Casavo Virtual Tools (Realisti.co) APIVersioned REST API behind Realisti.co, the virtual-tour and property-imaging platform Casavo operates as Ca...24.0 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...23.8 Korean Public Data Agent (A2A)Agent2Agent agent at https://publicdata-agent.songt50.us — a JSON-RPC 2.0 endpoint at the host root (POST o...23.2 Korean Public Data MCP ServerModel Context Protocol server io.github.SongT-50/korean-public-data-mcp (official MCP registry, active, 1.0...23.2 Century Communities Content Delivery APIThe Optimizely (Episerver) Content Delivery API v3.0 that Century Communities' public marketing site serves...23.0 Follow Up Boss APIREST API for managing real estate leads, contacts, deals, notes, tasks, calls, text messages, events, and w...23.0 Propertybase GO APIJSON REST API for the Propertybase GO / Lone Wolf Front Office real estate CRM. Read and write CRM records ...22.0 Agentbox APIThe production Agentbox (Reapit Sales) REST API used by approved integration partners to read and write age...21.7 LightBoxPower your digital workflows using comprehensive property and location intelligence data from LightBox.20.4 Stellar MLS Data DeliveryStellar MLS listing data delivery program (API, IDX and custom options). The Web API is not served from a S...17.5 Opendoor for AgentsOpendoor for Agents is the partner program that lets licensed real-estate agents submit clients to Opendoor...17.4 Trulia API (Historical / Sunset)The Trulia API was a suite of public XML/JSON endpoints that exposed listings, property details, location l...14.0 Zillow Group APIs (Successor)Programmatic access to data that historically lived behind the Trulia API is now delivered through Zillow G...14.0 EmporisGlobal building data and imagery provider covering high-rise and commercial structures.13.8 PadMapper Rental ListingsPadMapper provides a web-based rental listing search service covering apartments, houses, condos, and rooms...12.3 Property Capsule Developer APIProperty Capsule's Developer API, announced live on 2020-06-18 in the company's public release notes: "Our ...11.2

Minimal 3 Almost no public developer surface

UBS key4 Mortgages APIThe UBS key4 mortgages API lets property platforms and brokers embed Swiss mortgage origination, affordabil...10.9 Landlord Studio APILandlord Studio provides a property management platform with capabilities for managing rental properties, t...10.7 PlotAPI REST APISingle REST surface for vehicle specifications, VIN history, MOT records, parts fitment, valuations and pro...8.5

Companies reaching this through an API (15)

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.

1gateway ARGUS Coin Railz CoStar Group Datafiniti dataleads-pro edinetdb-jp FastAF FeedOracle Technologies HelpMyAgent Intercontinental Exchange State Farm SteadyAPI UBS ZenRows

Score breakdown

Frequency

75.3

log-scaled weighted occurrences

Breadth

10.6

spread across providers

Quality lift

19.1

mean composite of providers using it

Cohesion

0.0

strength of nearest seed neighbor

Where this tag sits

824 providers carry this tag directly, and 917 counting the 15 narrower tags below and the 4 beneath them — 93 more to reach.

AVM 19 providers Home Buying 17 providers Homeownership 11 providers IDX 22 providers Property 49 providers Property Data 65 providers Property Listings 63 providers PropTech 320 providers REIT 30 providers Residential 30 providers RESO 23 providers Tenant Screening 14 providers Title 12 providers Commercial Real Estate 73 providers Multifamily 35 providers

Where this tag comes from

Provider tag824

Api tag86

Openapi tag7

Openapi op tag13

Markets provisional

Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.

Market	Share of the market's providers
Real Estate and Proptech	92%
REITs and Real Estate Securities (SEC REIT registrants, EPRA)	75%

Cohort brief

Auto-generated

The 731 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

731

of 824 in the catalog

Mean Kin Score

20.3

-3.8 vs catalog 24.1

Mean Agent Readiness

11.1

-3.0 vs catalog 14.1

Spread

0–68.1

median 14.4 · σ 16.2

How the 731 split by band

Exemplar 3Strong 30Developing 78Thin 92Emerging 287Minimal 241

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	29.9	30	-0.1	731
Discoverability	57.6	59.1	-1.5	731
Contract Governance	7.4	9.7	-2.3	731
Operational Transparency	8.8	13.2	-4.4	731
Contract Quality	13.2	18.6	-5.4	731
Developer Ergonomics	18.7	24.5	-5.8	731

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)	14%	18%	-4
MCP server (first-party)	14%	16%	-2
Agent Skills	0%	0%	0
OAuth scopes	12%	13%	-1
Security	99%	99%	0
Arazzo workflows	1%	1%	0
Governance rules	26%	36%	-10

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 Common Elements 68.1
2 Zillapi 67.9
3 Lev 66.6
4 SignSealShip Partner API 65.4
5 Snappt 64.3
6 MRI Software 62.6
7 Notarize 62.4
8 Mlsgrid 61.9
9 propraven-com 61.5
10 ReefAPI 60.7

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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.

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Real Estate

Providers using this tag (824)

APIs with this tag (86)