ImmobilienScout24

ImmobilienScout24 (operated by Immobilien Scout GmbH, Berlin) is a German online real-estate marketplace for property listings to buy and rent. Its ImmoScout24 API developer portal at api.immobilienscout24.de documents REST APIs under rest.immobilienscout24.de/restapi/api for importing and exporting real-estate listings (real estates, attachments, contacts, publishing, OnTop placements, projects), search and exposés, geo services, energy certificates and construction financing. Access uses OAuth 1.0a (two- and three-legged) or personal access tokens with API keys created in a business account, offers a sandbox, and production use is charged per the Terms of Use price list.

ImmobilienScout24 is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Real Estate, Marketplace, API, and Germany.

The ImmobilienScout24 catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

ImmobilienScout24’s developer surface includes changelog, sandbox, authentication, documentation, API reference, getting-started guide, support, and 33 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

57.3/100 strong Agent 25/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs 5 Agent Skills

Company Real Estate MarketplaceAPIGermany Property ListingsOAuthSearchConstruction Financing

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 57.3/100 · strong

Contract Quality 5.6 / 21

Developer Ergonomics 13.3 / 17

Access Clarity 13.0 / 17

Operational Transparency 5.8 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 9

Regulatory Posture 6.0 / 15

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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 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

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
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 26.3 — up to +18.4 composite points
Contract Governance scores 22.0 — up to +9.4 composite points
Operational Transparency scores 52.6 — up to +6.2 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/immobilienscout24/apis.yml: open an issue on github.com/api-evangelist/immobilienscout24 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 →

APIs 2

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

ImmoScout24 API

REST APIs for real-estate listing import/export, search and exposés, geo services, energy certificates and construction financing, documented on the ImmoScout24 API Developer Po...

ImmobilienScout24 API

ImmobilienScout24 API as documented publicly: 42 operations. Contract generated from the documentation by API Evangelist (2026-10-28); not the provider's own document.

Agent Skills 5

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

manage-building-projects

AGENT SKILL

manage-contacts

AGENT SKILL

manage-listing-attachments

AGENT SKILL

manage-real-estate-listings

AGENT SKILL

publish-real-estate

AGENT SKILL

Pricing Plans 1

Published pricing tiers and plan structures.

Immobilienscout24 Plans Pricing

8 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Immobilienscout24 Rate Limits

1 limits

RATE LIMITS

Semantic Vocabularies 1

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

Immobilienscout24 Context

49 classes · 118 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

ImmobilienScout24 API Rules

11 rules · 8 errors 2 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.

Immobilienscout24 Openapi Generated Overlay

29 actions · security · immobilienscout24-openapi-generated.yml

DERIVED

JSON Schema 6

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

GetOfferV10UserUsernameContactResponse

28 properties

JSON SCHEMA

PostOfferV10UserUsernameContactRequest

27 properties

JSON SCHEMA

PostOfferV10UserUsernameRealestateprojectProjectProposalRequ

11 properties

JSON SCHEMA

PostOfferV10UserUsernameRealestateprojectRealestateprojectid3

7 properties

JSON SCHEMA

PutOfferV10UserUsernameContactIdOrExtExternalidRequest

27 properties

JSON SCHEMA

PutOfferV10UserUsernameRealestateprojectRealestateprojectidR

40 properties

JSON SCHEMA

Security Posture 3

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

Immobilienscout24 Authentication

1 scheme

SECURITY

Immobilienscout24 Domain Security

TLSv1.3 · DMARC

SECURITY

Immobilienscout24 Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Immobilienscout24 Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

WellKnown

WellKnown

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions

Lifecycle

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Postman

Postman

Access & Security 5

Authentication, authorization, and security posture

Security

Security

Authentication

Authentication

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 5

Status, limits, changes, and where to get help

ChangeLog

RateLimits

Support

FAQ

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

Pricing

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Overlay

Hosts

Vendors

Imprint

Source (apis.yml)

aid: immobilienscout24
name: ImmobilienScout24
description: ImmobilienScout24 (operated by Immobilien Scout GmbH, Berlin) is a German online real-estate marketplace for
  property listings to buy and rent. Its ImmoScout24 API developer portal at api.immobilienscout24.de documents REST APIs
  under rest.immobilienscout24.de/restapi/api for importing and exporting real-estate listings (real estates, attachments,
  contacts, publishing, OnTop placements, projects), search and exposés, geo services, energy certificates and construction
  financing. Access uses OAuth 1.0a (two- and three-legged) or personal access tokens with API keys created in a business
  account, offers a sandbox, and production use is charged per the Terms of Use price list.
image: https://api.immobilienscout24.de/pic/logo2x.png
url: https://artifacts.apis.io/immobilienscout24/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Company
- Real Estate
- Marketplace
- API
- Germany
- Property Listings
- OAuth
- Search
- Construction Financing
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/immobilienscout24-plans-pricing.yml
- type: AgentSkill
  url: skills/_index.yml
- type: ChangeLog
  url: changelog/immobilienscout24-changelog.yml
- type: Conventions
  url: conventions/immobilienscout24-conventions.yml
- type: Lifecycle
  url: lifecycle/immobilienscout24-lifecycle.yml
- type: Overlay
  url: overlays/immobilienscout24-openapi-generated-overlay.yaml
- type: SDKs
  url: packages/immobilienscout24-packages.yml
- type: Packages
  url: packages/immobilienscout24-packages.yml
- type: RateLimits
  url: rate-limits/immobilienscout24-rate-limits.yml
- type: Spectral
  url: rules/immobilienscout24-rules.yml
- type: JSONLD
  url: json-ld/immobilienscout24-context.jsonld
- type: Vocabulary
  url: vocabulary/immobilienscout24-vocabulary.yml
- type: DataModel
  url: data-model/immobilienscout24-data-model.yml
- type: Sandbox
  url: sandbox/immobilienscout24-sandbox.yml
- type: Security
  url: security/immobilienscout24-vulnerability-disclosure.yml
- type: Authentication
  url: authentication/immobilienscout24-authentication.yml
- type: ErrorCatalog
  url: errors/immobilienscout24-problem-types.yml
- type: Conformance
  url: conformance/immobilienscout24-conformance.yml
- type: SecurityTxt
  url: well-known/immobilienscout24-security.txt
- type: WellKnown
  url: well-known/immobilienscout24-well-known.yml
- type: Hosts
  url: hosts/immobilienscout24-hosts.yml
- type: Vendors
  url: vendors/immobilienscout24-vendors.yml
- type: VulnerabilityDisclosure
  url: security/immobilienscout24-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/immobilienscout24-domain-security.yml
- type: Website
  url: https://www.immobilienscout24.de/
- type: DeveloperPortal
  url: https://api.immobilienscout24.de/
- type: Documentation
  url: https://api.immobilienscout24.de/
- type: APIReference
  url: https://api.immobilienscout24.de/
- type: GettingStarted
  url: https://api.immobilienscout24.de/api-docs/get-started/introduction/
- type: Support
  url: https://api.immobilienscout24.de/more/support-feedback/
- type: TermsOfService
  url: https://api.immobilienscout24.de/terms-of-use/en/
- type: GitHubOrganization
  url: https://github.com/immobilienscout24
- type: Postman
  url: https://api.immobilienscout24.de/api-docs/postman/postman-collections/
- type: FAQ
  url: https://api.immobilienscout24.de/more/faq/faq-developer/
- type: Blog
  url: https://api.immobilienscout24.de/more/newsupdates/
- type: ChangeLog
  url: https://api.immobilienscout24.de/more/changelog/
- type: Pricing
  url: https://api.immobilienscout24.de/terms-of-use/en/
- type: SignUp
  url: https://selfservice.immobilienscout24.de/
- type: PrivacyPolicy
  url: https://www.immobilienscout24.de/agb/datenschutz.html
- type: Imprint
  url: https://www.immobilienscout24.de/impressum.html
apis:
- name: ImmoScout24 API
  description: REST APIs for real-estate listing import/export, search and exposés, geo services, energy certificates and
    construction financing, documented on the ImmoScout24 API Developer Portal.
  humanURL: https://api.immobilienscout24.de/api-docs/get-started/introduction/
  baseURL: https://rest.immobilienscout24.de/restapi/api
  aid: immobilienscout24:immoscout24-api
  properties:
  - type: WADL
    name: Offer API WADL (local copy, with embedded XSD grammars)
    url: wsdl/immobilienscout24-offer.wadl
  - type: WADL
    name: Offer API WADL (provider-hosted)
    url: https://rest.immobilienscout24.de/restapi/api/offer/v1.0/?_wadl&_schema.xml
  - type: XMLSchema
    url: https://rest.immobilienscout24.de/restapi/api/offer/v1.0/?_wadl&_schema.xml
- aid: immobilienscout24:immobilienscout24-api
  name: ImmobilienScout24 API
  description: 'ImmobilienScout24 API as documented publicly: 42 operations. Contract generated from the documentation by
    API Evangelist (2026-10-28);

    not the provider''s own document.'
  humanURL: https://api.immobilienscout24.de/api-docs/tutorials/building-projects
  baseURL: https://rest.immobilienscout24.de
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/immobilienscout24-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/immobilienscout24-put-offer-v10-user-username-realestateproject-realestateprojectid-r-schema.json
  - type: JSONSchema
    url: json-schema/immobilienscout24-put-offer-v10-user-username-contact-id-or-ext-externalid-request-schema.json
  - type: JSONSchema
    url: json-schema/immobilienscout24-get-offer-v10-user-username-contact-response-schema.json
  - type: JSONSchema
    url: json-schema/immobilienscout24-post-offer-v10-user-username-contact-request-schema.json
  - type: JSONSchema
    url: json-schema/immobilienscout24-post-offer-v10-user-username-realestateproject-realestateprojectid3-schema.json
  - type: JSONSchema
    url: json-schema/immobilienscout24-post-offer-v10-user-username-realestateproject-project-proposal-requ-schema.json
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The only machine-readable contract is a WADL with embedded XSD grammars for the Offer (import/export) API at rest.immobilienscout24.de/restapi/api/offer/v1.0/?_wadl
    (119 methods); no OpenAPI, AsyncAPI or GraphQL contract is published for the offer, search, geo, homeseller-lead, webhook
    or construction-financing APIs, which are documented only as HTML pages and Postman collections.
  evidence:
  - url: https://api.immobilienscout24.de/
    status: 200
  - url: https://rest.immobilienscout24.de/restapi/api/offer/v1.0/?_wadl&_schema.xml
    status: 200
    note: WADL application/xml, 300981 bytes, 119 methods, linked as "XSD files" from /api-docs/import-export/introduction/
  - url: https://www.immobilienscout24.de/
    status: 401
    note: homepage answers a bot challenge ("Ich bin kein Roboter"); same host serves impressum.html 200
  - url: https://www.immobilienscout24.de/impressum.html
    status: 200
    note: names Immobilien Scout GmbH, Berlin
  checked: '2026-10-28'
x-submission-probe: 401, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 41
  pass: modular-v1
  engine: identity=anthropic,contract=anthropic,surfaces=anthropic,docs=anthropic,regulatory=anthropic

ImmobilienScout24 API — frequently asked questions

Does ImmobilienScout24 have an API?

Yes. APIs.io lists 2 APIs from ImmobilienScout24, including ImmoScout24 API and ImmobilienScout24 API.

Is there an OpenAPI specification for the ImmobilienScout24 API?

Yes. APIs.io indexes 1 OpenAPI specification for ImmobilienScout24, each linked for download from this page.

How do I authenticate with the ImmobilienScout24 API?

ImmobilienScout24 uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Immobilienscout24 Authentication.

How much does the ImmobilienScout24 API cost?

APIs.io lists 8 pricing plans for ImmobilienScout24, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the ImmobilienScout24 API ready for AI agents?

ImmobilienScout24 has a Kin Score of 57.3 out of 100 (strong) and an Agent Readiness score of 24.6 (agent-aware), scored by API Evangelist on 2026-10-31.

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