Zillapi website screenshot

Zillapi

Independent third-party provider of Zillow-sourced U.S. residential property data via a REST API, hosted MCP server, and agent skills. Returns ~300+ fields per property including price, Zestimate, rent Zestimate, photos, schools, taxes, and full price history, plus listing search, building extraction, async batch jobs, and signed webhooks.

Zillapi publishes 7 APIs on the APIs.io network, including Account API, Buildings API, Jobs API, and 4 more. Tagged areas include Real Estate, PropTech, Property Data, Zillow, and Zestimate.

The Zillapi catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Zillapi’s developer surface includes authentication, documentation, API reference, getting-started guide, engineering blog, pricing, signup flow, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub
63.8/100 strong ▬ flat Agent 60/100 agent ready Front door AI 6/6 dominant saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs 2 MCP Servers
Real EstatePropTechProperty DataZillowZestimateValuationAVMListingsMCPAI AgentsREST API

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Developer Platform & API Ecosystem Management
BC-4270
Webhooks
GET /v1/webhooks POST /v1/webhooks GET /v1/webhooks/{id}/deliveries

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 63.8/100 · strong
Contract Quality 11.4 / 19
Developer Ergonomics 9.6 / 15
Access Clarity 11.4 / 15
Operational Transparency 5.1 / 10
Contract Governance 1.6 / 9
Discoverability 6.4 / 8
Regulatory Posture 6.0 / 15
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 60/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 6 / 6
Protected Resource Metadata 5 / 5
Registration Without a Human 6 / 6
Agentic Commerce Well-Known Document 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/zillapi: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Zillapi Account API

The Account API from Zillapi — 2 operation(s) for account.

Zillapi Buildings API

The Buildings API from Zillapi — 1 operation(s) for buildings.

Zillapi Jobs API

The Jobs API from Zillapi — 3 operation(s) for jobs.

Zillapi Listings API

The Listings API from Zillapi — 4 operation(s) for listings.

Zillapi Properties API

The Properties API from Zillapi — 13 operation(s) for properties.

Zillapi Search API

The Search API from Zillapi — 2 operation(s) for search.

Zillapi Webhooks API

The Webhooks API from Zillapi — 3 operation(s) for webhooks.

Scroll for all 7

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Zillapi: Zillow property data Account API

OPEN COLLECTION

Zillapi: Zillow property data Buildings API

OPEN COLLECTION

Zillapi: Zillow property data Jobs API

OPEN COLLECTION

Zillapi: Zillow property data Listings API

OPEN COLLECTION

Zillapi: Zillow property data Properties API

OPEN COLLECTION

Zillapi: Zillow property data Search API

OPEN COLLECTION

Zillapi: Zillow property data Webhooks API

OPEN COLLECTION

Scroll for all 8

MCP Servers 2

Model Context Protocol servers that expose these APIs to AI agents.

Zillapi MCP Server

MCP SERVER

MCP registry server.json (com.zillapi/zillow-mcp)

Zillow MCP for AI agents: property data, Zestimates & listings — 300+ fields per home. Free tier.

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Zillapi Plans

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Zillapi Rate Limits

3 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Zillapi Webhooks

ASYNCAPI

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Zillapi Authentication

http/oauth2 · 2 schemes

SECURITY

Zillapi Domain Security

TLSv1.3 · DMARC

SECURITY

Zillapi Vulnerability Disclosure

Hackerone · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Zillapi Scopes

1 scope · authorizationCode

1 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Zillapi Agentic Access

29 operations · 3 acting · 1 human-in-the-loop

29 operations · 3 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

AgentSkill
AgentSkill
 AgentSkill
AgentSkill
 MCPServer
MCPServer
 MCPServer
MCPServer
 AgenticAccess
AgenticAccess
 WellKnown
WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 Webhooks
Webhooks

Build 2

SDKs, sample code, and the tooling you integrate with

Packages
Packages
 GitHubOrganization
GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 VulnerabilityDisclosure
VulnerabilityDisclosure
 Security
Security

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans
Plans
 Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap
CapabilityMap
 Overlay
Overlay
 APICatalog
APICatalog

Source (apis.yml)

apis.yml Raw ↑ 
name: Zillapi
description: Independent third-party provider of Zillow-sourced U.S. residential property data via a REST API, hosted MCP
  server, and agent skills. Returns ~300+ fields per property including price, Zestimate, rent Zestimate, photos, schools,
  taxes, and full price history, plus listing search, building extraction, async batch jobs, and signed webhooks.
url: https://raw.githubusercontent.com/api-evangelist/zillapi/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://zillapi.com/og.png
created: '2026-07-13'
modified: '2026-09-11'
specificationVersion: '0.23'
tags:
- Real Estate
- PropTech
- Property Data
- Zillow
- Zestimate
- Valuation
- AVM
- Listings
- MCP
- AI Agents
- REST API
tags_raw:
- real estate
- proptech
- property data
- zillow
- zestimate
- valuation
- AVM
- listings
- MCP
- AI agent
- REST API
- Real-Estate
apis:
- aid: zillapi:zillapi-account-api
  name: Zillapi Account API
  description: The Account API from Zillapi — 2 operation(s) for account.
  humanURL: https://zillapi.com/api/account/
  baseURL: https://api.zillapi.com
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/zillapi-account-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/account/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-buildings-api
  name: Zillapi Buildings API
  description: The Buildings API from Zillapi — 1 operation(s) for buildings.
  humanURL: https://zillapi.com/api/buildings/
  baseURL: https://api.zillapi.com
  tags:
  - Buildings
  properties:
  - type: OpenAPI
    url: openapi/zillapi-buildings-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/buildings/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-jobs-api
  name: Zillapi Jobs API
  description: The Jobs API from Zillapi — 3 operation(s) for jobs.
  humanURL: https://zillapi.com/api/jobs/
  baseURL: https://api.zillapi.com
  tags:
  - Job
  tags_raw:
  - Jobs
  properties:
  - type: OpenAPI
    url: openapi/zillapi-jobs-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/jobs/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-listings-api
  name: Zillapi Listings API
  description: The Listings API from Zillapi — 4 operation(s) for listings.
  humanURL: https://zillapi.com/api/listings/
  baseURL: https://api.zillapi.com
  tags:
  - Listings
  properties:
  - type: OpenAPI
    url: openapi/zillapi-listings-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/listings/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-properties-api
  name: Zillapi Properties API
  description: The Properties API from Zillapi — 13 operation(s) for properties.
  humanURL: https://zillapi.com/api/properties/
  baseURL: https://api.zillapi.com
  tags:
  - Properties
  properties:
  - type: OpenAPI
    url: openapi/zillapi-properties-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/properties/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-search-api
  name: Zillapi Search API
  description: The Search API from Zillapi — 2 operation(s) for search.
  humanURL: https://zillapi.com/api/search/
  baseURL: https://api.zillapi.com
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/zillapi-search-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/search/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
- aid: zillapi:zillapi-webhooks-api
  name: Zillapi Webhooks API
  description: The Webhooks API from Zillapi — 3 operation(s) for webhooks.
  humanURL: https://zillapi.com/api/webhooks/
  baseURL: https://api.zillapi.com
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/zillapi-webhooks-api-openapi.yml
  - type: APIReference
    url: https://zillapi.com/api/webhooks/
  - type: Documentation
    url: https://zillapi.com/quickstart/
  - type: LLMsTxt
    url: https://zillapi.com/llms.txt
  - type: LLMsTxt
    url: https://zillapi.com/llms-full.txt
  - type: ToolCrosswalk
    url: mcp/zillapi-tool-crosswalk.yml
  - type: LLMsTxt
    url: llms/zillapi-llms.txt
  - type: DataModel
    url: data-model/zillapi-data-model.yml
  - type: Examples
    url: examples/zillapi-examples.yml
maintainers:
- FN: ZeroPointRepo
  email: hello@zillapi.com
  url: https://github.com/ZeroPointRepo/zillow-skills
generated:
  by: apis.io/add
  model: claude-opus-4-8
  confidence: 97
  at: '2026-07-13T07:54:16.663Z'
common:
- type: Website
  url: https://www.zillapi.com/
- type: CapabilityMap
  url: capabilities/zillapi-capability-edges.yml
  name: Zillapi Business Capability Map
- type: AgentSkill
  url: skills/zillapi-get-zestimate.md
- type: AgentSkill
  url: skills/_index.yml
  name: Zillapi Agent Skills index (5 provider-published skills across 3 distributions)
- type: MCPServer
  url: mcp/zillapi-mcp.yml
- type: MCPServer
  url: mcp/zillapi-server.json
  name: MCP registry server.json (com.zillapi/zillow-mcp)
- type: Overlay
  url: overlays/zillapi-openapi-overlay.yaml
- type: DomainSecurity
  url: security/zillapi-domain-security.yml
- type: AgenticAccess
  url: agentic-access/zillapi-agentic-access.yml
- type: Authentication
  url: authentication/zillapi-authentication.yml
- type: OAuthScopes
  url: scopes/zillapi-scopes.yml
- type: Conventions
  url: conventions/zillapi-conventions.yml
- type: ErrorCatalog
  url: errors/zillapi-error-codes.yml
- type: Lifecycle
  url: lifecycle/zillapi-lifecycle.yml
- type: Conformance
  url: conformance/zillapi-conformance.yml
- type: Packages
  url: packages/zillapi-packages.yml
- type: WellKnown
  url: well-known/zillapi-well-known.yml
- type: APICatalog
  url: https://zillapi.com/.well-known/api-catalog
- type: Webhooks
  url: asyncapi/zillapi-webhooks.yml
- type: RateLimits
  url: rate-limits/zillapi-rate-limits.yml
- type: Plans
  url: plans/zillapi-plans.yml
- type: VulnerabilityDisclosure
  url: security/zillapi-vulnerability-disclosure.yml
- type: Security
  url: https://github.com/ZeroPointRepo/zillow-skills/blob/main/SECURITY.md
- type: DeveloperPortal
  url: https://zillapi.com/
- type: Documentation
  url: https://zillapi.com/quickstart/
- type: APIReference
  url: https://zillapi.com/api/properties/
- type: GettingStarted
  url: https://zillapi.com/quickstart/
- type: Blog
  url: https://zillapi.com/blog/
- type: GitHubOrganization
  url: https://github.com/ZeroPointRepo
- type: Pricing
  url: https://zillapi.com/pricing/
- type: SignUp
  url: https://zillapi.com/signup
- type: Login
  url: https://zillapi.com/login
- type: TermsOfService
  url: https://zillapi.com/legal/terms/
- type: PrivacyPolicy
  url: https://zillapi.com/legal/privacy/
- type: Support
  url: mailto:hello@zillapi.com
x-enrichment:
  date: '2026-09-11'
  status: enriched
  artifacts_added: 2
  pass: local-v3

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