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 API contracts indexed 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 and 1 Spectral governance ruleset.

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

68.5/100 exemplar ▬ flat Agent 58/100 agent ready Front door AI 6/6 dominant Heartbeat 68/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →
AccessFreemiumSelf serve⚡ Free to try
1 published contract 2 MCP Servers 5 Agent Skills
Real EstatePropTechProperty DataZillowZestimateValuationAVMListingsMCPAI AgentsREST API

What this lets a business do 2

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

Data & Reference Information Services
AE-230
ListingsPropertiesSearch
GET /v1/properties/{zpid} GET /v1/properties/{zpid}/tax-history GET /v1/properties/{zpid}/zestimate POST /v1/listings/for-sale
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 2026-11-06 · rubric v0.27.0
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/.
Show this score on your site. Kin Score badge preview for Zillapi It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/zillapi/"><img src="https://apis.io/badge/zillapi/card.svg" alt="Zillapi on APIs.io — Kin Score by API Evangelist"></a>
Other styles, a README pill and a shields.io endpoint are on the badge page.
Raise your score.
Agent readiness — checks not met, largest first (exact, from this profile):
  • Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
  • A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
  • Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too
  • Pagination +5 pts — share of collection GETs (an array, or one wrapped in data/items/results ...) that declare a page/limit/offset/cursor parameter, a Link header or a next/cursor field; na with no collection GETs
  • Agentic Commerce Well-Known Document +5 pts — a parsing /.well-known/ucp.json or acp.json declaring a version and at least one service, OR (0.27) a live x402 payment challenge from _data/x402-adoption.json — `self` when its endpoints are on the provider's own domain, `platform` when they are on a vendor's
  • Dry-Run / Simulate Mode +4 pts — OpenAPI: destructive operations expose a dry_run / simulate / preview / validate_only parameter
1 more unmet check in the Agent Readiness table above.
Kin Score — facets with the most composite points still available (weight × headroom):
Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.
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 the provider profile at artifacts.apis.io/zillapi/apis.yml: open an issue on github.com/api-evangelist/zillapi to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 6

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

measured — observed by APIs.io (verified)
measured — observed by APIs.io (published)
measured — observed by APIs.io (verified)
measured — observed by APIs.io (published)
measured — observed by APIs.io (published)
measured — observed by APIs.io (declared)

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 7

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

Scroll for all 7

MCP Servers 2

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

Zillapi MCP Server

Remote MCP server at api.zillapi.com over HTTP requiring OAuth; 4 tools listed.

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

Agent Skills 5

Packaged agent skills for driving this provider's APIs from an AI assistant.

get-zestimate

AGENT SKILL

zillow

AGENT SKILL

Zillapi API pricing

Prices published by Zillapi, read 2026-10-28 from zillapi.com/pricing/.

PlanPrice
Free $0
Includes: 100 credits, one-time at signup
Monthly $5/month
Includes: 1,000 credits / month
Annual $4.50/month
Includes: 12,000 credits / year* (1,000 every month); Billed $54 / year · Save 10%
Top-up pack 1k $4
Includes: 1,000 credits
Top-up pack 5k $20
Includes: 5,000 credits (monthly rate; $15 annual)
Top-up pack 10k $40
Includes: 10,000 credits (monthly rate; $30 annual)
Top-up pack 25k $100
Includes: 25,000 credits (monthly rate; $75 annual)
Top-up pack 50k $200
Includes: 50,000 credits (monthly rate; $150 annual)

All 9 plans, limits and sources →

Billed by: 1,000 credits · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Zillapi Plans

9 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Zillapi Rate Limits

3 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Zillapi

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Event Specifications 1

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

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Zillapi API Rules

65 rules · 58 errors 6 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Zillapi Openapi Overlay

10 actions · update · zillapi-openapi-original.json

DERIVED

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

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 6

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 5

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 4

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 3

Properties that don't map to a standard resource type

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
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - scopes
  - rate-limits
  - security
  generated: '2026-11-06'
  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

Zillapi — frequently asked questions

Does Zillapi have an API?

Yes. APIs.io lists 7 APIs from Zillapi, including Zillapi Account API, Zillapi Buildings API and Zillapi Jobs API, and 4 more.

Is there an OpenAPI specification for the Zillapi?

Yes. APIs.io indexes 7 OpenAPI specifications for Zillapi, each linked for download from this page.

How do I authenticate with the Zillapi?

Zillapi documents its authentication (http/oauth2 · 2 schemes). The details are profiled on APIs.io as Zillapi Authentication.

How much does the Zillapi cost?

Zillapi publishes its prices; its Free plan is $0 as of 2026-10-28. APIs.io lists 9 pricing plans for Zillapi, with each plan's price, limits and inclusions under Pricing on this page.

Does Zillapi have an MCP server?

Yes. APIs.io lists 2 MCP servers for Zillapi: Remote MCP server at api.zillapi.com over HTTP requiring OAuth; 4 tools listed.

Is the Zillapi ready for AI agents?

Zillapi has a Kin Score of 68.5 out of 100 (exemplar) and an Agent Readiness score of 58.3 (agent-ready), scored by API Evangelist on 2026-11-06.

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