Casatoo

Casatoo (casatoo.pt) is a Portuguese property-search platform for home buyers in Portugal. It aggregates listings from major portals and local agencies into one inventory, lets buyers compare the same home across sites, track price history and price drops, see a Casatoo price estimate, and run a mortgage simulator. It publishes an agent integration guide with public anonymous read access, OAuth-delegated access to a user's likes and saved searches, a hosted MCP server, WebMCP browser tools, llms.txt and an agent OpenAPI.

Casatoo publishes 5 API contracts indexed on the APIs.io network, including Account API, Likes API, Listings API, and 2 more. Tagged areas include Company, Real Estate, Property Search, Portugal, and Price Tracking.

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

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

🌐 Visit website 📡 Profile data on GitHub

37.1/100 thin Agent 28/100 agent aware Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers 3 Agent Skills

Company Real Estate Property Search PortugalPrice TrackingMortgage MCP AI Agents

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 37.1/100 · thin

Contract Quality 10.8 / 21

Developer Ergonomics 2.8 / 17

Access Clarity 2.9 / 17

Operational Transparency 4.0 / 11

Contract Governance 5.0 / 10

Discoverability 5.5 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 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):

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)
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

8 more unmet checks in the Agent Readiness table above.

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

Developer Ergonomics scores 16.7 — up to +16.7 composite points
Access Clarity scores 17.1 — up to +16.6 composite points
Contract Quality scores 50.7 — up to +12.3 composite points

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/casatoo-pt/apis.yml: open an issue on github.com/api-evangelist/casatoo-pt 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 3

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 5

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

Casatoo Account API

Authenticated principal identity.

Casatoo Likes API

Principal-owned listing likes.

Casatoo Listings API

Bounded public property data.

Casatoo Locations API

Canonical location discovery.

Casatoo Saved searches API

The Saved searches API from Casatoo — 2 operation(s) for saved searches.

MCP Servers 1

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

Casatoo MCP Server

MCP SERVER

Agent Skills 3

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

casatoo-manage-likes

AGENT SKILL

casatoo-manage-saved-searches

AGENT SKILL

casatoo-search-homes

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Casatoo Pt Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Casatoo Pt Rate Limits

5 limits

RATE LIMITS

Semantic Vocabularies 1

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

Casatoo Pt Context

44 classes · 137 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Casatoo API Rules

59 rules · 54 errors 3 warnings 2 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.

Casatoo Pt Openapi Overlay

4 actions · update · casatoo-pt-openapi.yml

DERIVED

JSON Schema 6

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

ListingOut

34 properties

JSON SCHEMA

LocationOptionOut

7 properties

JSON SCHEMA

PublicSearchRequest

14 properties

JSON SCHEMA

PublicSearchResponse

5 properties

JSON SCHEMA

SearchIn

12 properties

JSON SCHEMA

SearchOut

15 properties

JSON SCHEMA

Security Posture 2

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

Casatoo Pt Authentication

oauth2 · 1 scheme

SECURITY

Casatoo Pt Domain Security

TLSv1.3 · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Casatoo Pt Scopes

8 scopes · authorizationCode

8 scopes

SCOPES

Agentic Access 1

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

Casatoo Pt Agentic Access

19 operations · 7 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

DeveloperPortal

DeveloperPortal

Login

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

MCPDocumentation

MCPDocumentation

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgenticAccess

AgentSkill

LLMsTxt

WellKnown

Design & Contract 9

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Idempotency

Conventions

Lifecycle

ErrorCatalog

Conformance

Scroll for all 9

Build 1

SDKs, sample code, and the tooling you integrate with

ToolCrosswalk

ToolCrosswalk

Access & Security 3

Authentication, authorization, and security posture

OAuthScopes

OAuthScopes

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

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

Overlay

Overlay

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: casatoo-pt
name: Casatoo
description: Casatoo (casatoo.pt) is a Portuguese property-search platform for home buyers in Portugal. It aggregates listings
  from major portals and local agencies into one inventory, lets buyers compare the same home across sites, track price history
  and price drops, see a Casatoo price estimate, and run a mortgage simulator. It publishes an agent integration guide with
  public anonymous read access, OAuth-delegated access to a user's likes and saved searches, a hosted MCP server, WebMCP browser
  tools, llms.txt and an agent OpenAPI.
url: https://artifacts.apis.io/casatoo-pt/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-03 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-11-03'
modified: '2026-11-03'
tags:
- Company
- Real Estate
- Property Search
- Portugal
- Price Tracking
- Mortgage
- MCP
- AI Agents
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://casatoo.pt/logo/casatoo-big.svg
common:
- type: MCPServer
  url: https://api.casatoo.pt/mcp
- type: AgenticAccess
  url: agentic-access/casatoo-pt-agentic-access.yml
- type: RateLimits
  url: rate-limits/casatoo-pt-rate-limits.yml
- type: Spectral
  url: rules/casatoo-pt-rules.yml
- type: JSONLD
  url: json-ld/casatoo-pt-context.jsonld
- type: Vocabulary
  url: vocabulary/casatoo-pt-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/casatoo-pt-data-model.yml
- type: Idempotency
  url: conventions/casatoo-pt-conventions.yml
- type: Conventions
  url: conventions/casatoo-pt-conventions.yml
- type: StatusPage
  url: https://api.casatoo.pt/health
- type: Lifecycle
  url: lifecycle/casatoo-pt-lifecycle.yml
- type: ErrorCatalog
  url: errors/casatoo-pt-problem-types.yml
- type: Conformance
  url: conformance/casatoo-pt-conformance.yml
- type: Overlay
  url: overlays/casatoo-pt-openapi-overlay.yaml
- type: LLMsTxt
  url: llms/casatoo-pt-llms.txt
- type: ToolCrosswalk
  url: mcp/casatoo-pt-tool-crosswalk.yml
- type: WellKnown
  url: well-known/casatoo-pt-well-known.yml
- type: Hosts
  url: hosts/casatoo-pt-hosts.yml
- type: Vendors
  url: vendors/casatoo-pt-vendors.yml
- type: GettingStarted
  url: https://casatoo.pt/developers/agents#webmcp
- type: OAuthScopes
  url: scopes/casatoo-pt-scopes.yml
- type: Authentication
  url: authentication/casatoo-pt-authentication.yml
- type: Website
  url: https://casatoo.pt/
- type: DomainSecurity
  url: security/casatoo-pt-domain-security.yml
- type: DeveloperPortal
  url: https://casatoo.pt/developers/agents
- type: Documentation
  url: https://casatoo.pt/developers/agents
- type: MCPDocumentation
  url: https://casatoo.pt/en/mcp
- type: Blog
  url: https://casatoo.pt/en/blog
- type: Login
  url: https://casatoo.pt/auth/signin
- type: SignUp
  url: https://casatoo.pt/auth/signup?ui_locales=pt
- type: TermsOfService
  url: https://casatoo.pt/en/terms
- type: PrivacyPolicy
  url: https://casatoo.pt/en/privacy
apis:
- aid: casatoo-pt:casatoo-pt-account-api
  name: Casatoo Account API
  description: Authenticated principal identity.
  humanURL: https://casatoo.pt/developers/agents
  baseURL: https://api.casatoo.pt
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/casatoo-pt-account-api-openapi.yml
  - type: Documentation
    url: https://casatoo.pt/developers/agents
  - type: JSONSchema
    url: json-schema/casatoo-pt-listing-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-request-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-in-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-location-option-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-response-schema.json
- aid: casatoo-pt:casatoo-pt-likes-api
  name: Casatoo Likes API
  description: Principal-owned listing likes.
  humanURL: https://casatoo.pt/developers/agents
  baseURL: https://api.casatoo.pt
  tags:
  - Likes
  properties:
  - type: OpenAPI
    url: openapi/casatoo-pt-likes-api-openapi.yml
  - type: Documentation
    url: https://casatoo.pt/developers/agents
  - type: JSONSchema
    url: json-schema/casatoo-pt-listing-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-request-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-in-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-location-option-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-response-schema.json
- aid: casatoo-pt:casatoo-pt-listings-api
  name: Casatoo Listings API
  description: Bounded public property data.
  humanURL: https://casatoo.pt/developers/agents
  baseURL: https://api.casatoo.pt
  tags:
  - Listings
  properties:
  - type: OpenAPI
    url: openapi/casatoo-pt-listings-api-openapi.yml
  - type: Documentation
    url: https://casatoo.pt/developers/agents
  - type: JSONSchema
    url: json-schema/casatoo-pt-listing-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-request-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-in-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-location-option-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-response-schema.json
- aid: casatoo-pt:casatoo-pt-locations-api
  name: Casatoo Locations API
  description: Canonical location discovery.
  humanURL: https://casatoo.pt/developers/agents
  baseURL: https://api.casatoo.pt
  tags:
  - Locations
  properties:
  - type: OpenAPI
    url: openapi/casatoo-pt-locations-api-openapi.yml
  - type: Documentation
    url: https://casatoo.pt/developers/agents
  - type: JSONSchema
    url: json-schema/casatoo-pt-listing-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-request-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-in-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-location-option-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-response-schema.json
- aid: casatoo-pt:casatoo-pt-saved-searches-api
  name: Casatoo Saved searches API
  description: The Saved searches API from Casatoo — 2 operation(s) for saved searches.
  humanURL: https://casatoo.pt/developers/agents
  baseURL: https://api.casatoo.pt
  tags:
  - Saved searches
  properties:
  - type: OpenAPI
    url: openapi/casatoo-pt-saved-searches-api-openapi.yml
  - type: Documentation
    url: https://casatoo.pt/developers/agents
  - type: JSONSchema
    url: json-schema/casatoo-pt-listing-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-request-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-search-in-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-location-option-out-schema.json
  - type: JSONSchema
    url: json-schema/casatoo-pt-public-search-response-schema.json
x-coverage:
  state: covered
  reason: identity-verified
  detail: Name from site title "Casatoo | Property alerts in Portugal" and footer "© 2026 Casatoo.pt"; all pointers fetched
    2026-11-03 with 200.
  evidence:
  - url: https://casatoo.pt/
    status: 200
  - url: https://casatoo.pt/en/about
    status: 200
  - url: https://casatoo.pt/developers/agents
    status: 200
  - url: https://casatoo.pt/en/mcp
    status: 200
  - url: https://casatoo.pt/en/blog
    status: 200
  - url: https://casatoo.pt/auth/signin
    status: 200
  - url: https://casatoo.pt/auth/signup?ui_locales=pt
    status: 200
  - url: https://casatoo.pt/en/terms
    status: 200
  - url: https://casatoo.pt/en/privacy
    status: 200
  - url: https://casatoo.pt/logo/casatoo-big.svg
    status: 200
x-enrichment:
  date: '2026-11-03'
  status: enriched
  artifacts_added: 44
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

Casatoo API — frequently asked questions

Does Casatoo have an API?

Yes. APIs.io lists 5 APIs from Casatoo, including Casatoo Account API, Casatoo Likes API and Casatoo Listings API, and 2 more.

Is there an OpenAPI specification for the Casatoo API?

Yes. APIs.io indexes 5 OpenAPI specifications for Casatoo, each linked for download from this page.

How do I authenticate with the Casatoo API?

Casatoo documents its authentication (oauth2 · 1 scheme). The details are profiled on APIs.io as Casatoo Pt Authentication.

Does Casatoo have an MCP server?

Yes. APIs.io lists 1 MCP server for Casatoo.

Is the Casatoo API ready for AI agents?

Casatoo has a Kin Score of 37.1 out of 100 (thin) and an Agent Readiness score of 28.3 (agent-aware), scored by API Evangelist on 2026-11-06.

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