HOUSINGFAX

HOUSINGFAX provides free, instant property reports in Spain, offering 22 official checks on building status, risks, and price reference. Users can analyze a property by address or cadastral reference, receiving a PDF report without registration.

HOUSINGFAX publishes 2 API contracts indexed on the APIs.io network, including agent API API, and 1 more. Tagged areas include Real Estate, Property Reports, and Spain.

The HOUSINGFAX catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

HOUSINGFAX’s developer surface includes engineering blog and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.1/100 emerging Agent 17/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessOpen

1 published contract

Real Estate Property Reports Spain

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 21.1/100 · emerging

Contract Quality 10.8 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 2.2 / 10

Discoverability 5.8 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey) Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented) Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Developer Ergonomics scores 2.4 — up to +19.5 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/housingfax-com/apis.yml: open an issue on github.com/api-evangelist/housingfax-com 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 1

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

HOUSINGFAX Agent API

Instant home report on a flat, house or building in Spain, for AI agents and developers.

HOUSINGFAX agent API API

Public, unauthenticated API to explain HOUSINGFAX, check coverage, identify a building in Spain and request the report for a person, who accepts the consent text first. Every re...

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Housingfax Com Context

10 classes · 61 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

HOUSINGFAX API Rules

58 rules · 54 error-severity 1 warn-severity 3 info-severity

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

CheckCoverageOutput

6 properties

JSON SCHEMA

GetProductsOutput

16 properties

JSON SCHEMA

ListChecksOutput

6 properties

JSON SCHEMA

PurchaseReportOutput

19 properties

JSON SCHEMA

ResolveBuildingOutput

12 properties

JSON SCHEMA

SearchAddressOutput

0 properties

JSON SCHEMA

Security Posture 1

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

HOUSINGFAX Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Resources

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

Conformance

DataModel

ErrorCatalog

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: housingfax-com
name: HOUSINGFAX
accessModel:
  pricing: unknown
  onboarding: open
  trial: false
  try_now: false
  public: true
  gated: none
  gated_source:
  - onboarding
  label: Open access
  confidence: low
  source:
  - security
  generated: '2026-11-13'
  method: derived
image: https://housingfax.com/opengraph-image.png
description: HOUSINGFAX provides free, instant property reports in Spain, offering 22 official checks on building status,
  risks, and price reference. Users can analyze a property by address or cadastral reference, receiving a PDF report without
  registration.
url: https://artifacts.apis.io/housingfax-com/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- Real Estate
- Property Reports
- Spain
tags_raw:
- RealEstate
- PropertyReports
- Spain
- FreeService
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/housingfax-com-rules.yml
- type: JSONLD
  url: json-ld/housingfax-com-context.jsonld
- type: Vocabulary
  url: vocabulary/housingfax-com-vocabulary.yml
- type: Conformance
  url: conformance/housingfax-com-conformance.yml
- type: DataModel
  url: data-model/housingfax-com-data-model.yml
- type: ErrorCatalog
  url: errors/housingfax-com-problem-types.yml
- type: LLMsTxt
  url: llms/housingfax-com-llms.txt
- type: WellKnown
  url: well-known/housingfax-com-well-known.yml
- type: Hosts
  url: hosts/housingfax-com-hosts.yml
- type: Vendors
  url: vendors/housingfax-com-vendors.yml
- type: Blog
  url: https://housingfax.com/es-es/blog
- type: DomainSecurity
  url: security/housingfax-com-domain-security.yml
- type: Website
  url: https://housingfax.com/
apis:
- name: HOUSINGFAX Agent API
  description: Instant home report on a flat, house or building in Spain, for AI agents and developers.
  humanURL: https://housingfax.com/
  baseURL: https://housingfax.com
  aid: housingfax-com:housingfax-agent-api
- aid: housingfax-com:housingfax-agent-api-api
  name: HOUSINGFAX agent API API
  description: 'Public, unauthenticated API to explain HOUSINGFAX, check coverage, identify a building in Spain and request
    the report for a person, who accepts the consent text first. Every report is free: the full report with web view and PDF.'
  humanURL: https://housingfax.com/openapi.json
  baseURL: https://housingfax.com/api/agent/v1
  properties:
  - type: OpenAPI
    url: openapi/_original/housingfax-com-api-openapi.json
  - type: JSONSchema
    url: json-schema/housingfax-com-get-products-output-schema.json
  - type: JSONSchema
    url: json-schema/housingfax-com-resolve-building-output-schema.json
  - type: JSONSchema
    url: json-schema/housingfax-com-check-coverage-output-schema.json
  - type: JSONSchema
    url: json-schema/housingfax-com-search-address-output-schema.json
  - type: JSONSchema
    url: json-schema/housingfax-com-purchase-report-output-schema.json
  - type: JSONSchema
    url: json-schema/housingfax-com-list-checks-output-schema.json
x-enrichment:
  date: '2026-11-11'
  status: enriched
  artifacts_added: 17
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

HOUSINGFAX API — frequently asked questions

Does HOUSINGFAX have an API?

Yes. APIs.io lists 2 APIs from HOUSINGFAX, including HOUSINGFAX Agent API and HOUSINGFAX agent API API.

Is there an OpenAPI specification for the HOUSINGFAX API?

Yes. APIs.io indexes 1 OpenAPI specification for HOUSINGFAX, each linked for download from this page.

Is the HOUSINGFAX API ready for AI agents?

HOUSINGFAX has a Kin Score of 21.1 out of 100 (emerging) and an Agent Readiness score of 16.5 (agent-aware), scored by API Evangelist on 2026-11-13.

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