HouseSigma

aid: housesigma
url: https://raw.githubusercontent.com/api-evangelist/housesigma/refs/heads/main/apis.yml
name: HouseSigma
kind: company
description: 'HouseSigma, Inc. Brokerage is a Toronto-based Canadian residential real estate portal and licensed brokerage
  that pairs map-based MLS listing search with sold-price history and machine-learning home valuations (SigmaEstimate) across
  Ontario, British Columbia, and Alberta. It sits in the challenger layer of the Canadian value chain, below CREA, which operates
  REALTOR.ca and the national Data Distribution Facility (DDF) that syndicates member boards'' listings, and alongside Wahi,
  Zolo, and Properly, competing on visibility into data the boards control, a position it won in part through the Competition
  Bureau litigation that forced TRREB to release sold data in 2018. Its API posture is closed. There is no developer portal,
  no published API program, and no partner or data-licensing page; developer., developers., and docs.housesigma.com do not
  resolve in DNS, and /developers, /api, /api-docs, /openapi.json and /swagger.json all return the single-page-application
  shell rather than any contract. The listing, sold-history and valuation backend at housesigma.com/bkv2/api/ is private,
  keyless, undocumented, and explicitly disallowed to all crawlers in robots.txt. The one genuinely public, anonymously callable,
  machine-readable HTTP surface the company operates is the WordPress REST API behind housesigma.com/blog-en, which serves
  its Canadian housing-market analysis blog as JSON across 157 advertised routes; API Evangelist derived an OpenAPI for the
  22 operations verified to answer anonymously. HouseSigma also publishes a real llms.txt and mobile deep-link association
  documents. RESO is absent: HouseSigma is not among the Canadian organizations RESO lists as members, and no Web API or Data
  Dictionary certification, OData $metadata document, or Universal Property Identifier usage was found. No open, unlicensed
  dataset is published. The underlying listing and sold data is board-licensed and reaches HouseSigma through its own brokerage
  membership, not through anything a third-party developer can sign up for.'
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: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://housesigma.com/apple-touch-icon.png?v=2
tags:
- Real Estate
- Canada
- Property Listings
- MLS
- Valuation
- AVM
- PropTech
- Rentals
- Blog
- Content
- WordPress
- oEmbed
- Ontario
- British Columbia
- Toronto
tags_raw:
- Real Estate
- Canada
- Property Listings
- MLS
- Valuation
- AVM
- PropTech
- Rentals
- Blog
- Content
- WordPress
- oEmbed
- Ontario
- British Columbia
- Toronto
- Real-Estate
created: '2026-07-26'
modified: '2026-07-26'
specificationVersion: '0.23'
apis:
- aid: housesigma:housesigma-com-blog-en-website-wordpress-rest
  name: HouseSigma Website (WordPress REST)
  description: 'The public WordPress REST API (wp-json) of the HouseSigma website at housesigma.com/blog-en: the route index
    of the site''s content management system, catalogued as one site surface rather than as separate APIs.'
  baseURL: https://housesigma.com/blog-en/wp-json
  tags:
  - WordPress
  x-surface: platform-generated
  properties:
  - type: Documentation
    url: https://housesigma.com/blog-en/wp-json
  x-platform: wordpress
  x-platform-surface: rest
common:
- type: X-MCPServerCandidate
  url: mcp/housesigma-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgenticAccess
  url: agentic-access/housesigma-agentic-access.yml
- type: DomainSecurity
  url: security/housesigma-domain-security.yml
- type: Authentication
  url: authentication/housesigma-authentication.yml
- type: Website
  url: https://housesigma.com/
- type: Blog
  url: https://housesigma.com/blog-en/
- type: BlogRSS
  url: https://housesigma.com/blog-en/feed/
- type: GitHubOrganization
  url: https://github.com/housesigma
- type: LinkedIn
  url: https://www.linkedin.com/company/housesigma
- type: LLMsTxt
  url: llms/housesigma-llms.txt
- type: WellKnown
  url: well-known/housesigma-well-known.yml
- type: Conventions
  url: conventions/housesigma-conventions.yml
- type: ErrorCatalog
  url: errors/housesigma-problem-types.yml
- type: Lifecycle
  url: lifecycle/housesigma-lifecycle.yml
- type: Conformance
  url: conformance/housesigma-conformance.yml
- type: DataModel
  url: data-model/housesigma-data-model.yml
- type: Components
  url: components/housesigma-components.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Examples
  url: examples/
- type: TermsOfService
  url: https://housesigma.com/blog-en/2018/04/25/terms-of-use/
- type: PrivacyPolicy
  url: https://housesigma.com/blog-en/2018/04/25/privacy-policy/
- type: Support
  url: https://housesigma.com/blog-en/contact-us/
- type: FAQ
  url: https://housesigma.com/blog-en/faq/
- type: About
  url: https://housesigma.com/blog-en/about-us/
- type: Careers
  url: https://team.housesigma.com/
- type: iOSApp
  url: https://itunes.apple.com/ca/app/toronto-real-estate-housesigma/id1255490256?mt=8
- type: AndroidApp
  url: https://play.google.com/store/apps/details?id=com.housesigma.android&hl=en_CA
- type: Facebook
  url: https://www.facebook.com/housesigma/
- type: Instagram
  url: https://www.instagram.com/housesigma/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com