Zillow
Zillow is the largest U.S. real-estate marketplace, offering home and rental listings, Zestimate home value estimates, mortgage tools, and a connected agent and lender ecosystem. Zillow Group owns Trulia, StreetEasy, HotPads, Out East, Bridge Interactive, Mortech, Showcase, and ShowingTime+. Zillow sunset its legacy public consumer APIs (Zillow Web Services, the GetSearchResults / GetZestimate / Property Details APIs and the Mortgage APIs) on September 30, 2021. Programmatic access to Zillow Group listing, broker, and lender data is now delivered through Bridge Interactive (bridgedataoutput.com) for licensed real-estate professionals and MLSs, the Zillow Tech Connect partner program for vendors, Mortech for mortgage pricing, and the Showcase listing enhancement product. This profile documents what is publicly findable on each surviving API surface.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Zillow the way a machine reads it — 10 machine-readable artifacts across 5 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Zillow scores 28.2/100 (emerging), with a separate agent-readiness read of 7/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Zillow
Each block below is one kind of artifact we hold for Zillow. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 5
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Zillow Web Services (Historical / Sunset)
Zillow Web Services were the legacy public XML-based APIs from Zillow including GetSearchResults, GetZestimate, GetDeepSearchResults, GetUpdatedPropertyDetails, GetComps, GetReg...
Bridge Interactive API
Bridge Interactive is Zillow Group's RESO-compliant data distribution platform for MLSs, brokers, and approved vendors. It exposes a RESO Web API (OData-based) for searching lis...
Zillow Tech Connect
Zillow Tech Connect is the partner program that lets approved real-estate software vendors integrate with Zillow Premier Agent for contact, lead, and listing sync. Vendors are v...
Mortech API
Mortech is Zillow Group's mortgage pricing and product eligibility engine for lenders and partners. It exposes web services for real-time rate quotes, scenario pricing, and prod...
Zillow Showcase
Zillow Showcase is a premium listing enhancement product for agents and MLSs that integrates immersive media (interactive floor plans, virtual tours, AI-enhanced photography) in...
GraphQL 1
Where a provider ships GraphQL, the schema is the contract. We profile it alongside the REST surface so the whole interface is legible in one place.
GraphQL schemas published by this provider.
Zillow GraphQL Schema
This is a conceptual GraphQL schema for the Zillow real estate search and data platform. Zillow is the largest U.S. real-estate marketplace, offering home and rental listings, Z...
GRAPHQLPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Zillow Plans Pricing
PLANSRate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Zillow Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Zillow Finops
FINOPSSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Zillow — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 2
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 1
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 7
The organization behind the API
Scroll within the panel for all 7 ·
Other 5
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/zillow · machine-readable index on apis.io