Holidu
Holidu is a Munich-based vacation-rental search engine and short-term-rental technology company that helps travellers find and book holiday homes and helps property owners and managers distribute their inventory. Holidu exposes a public Developer Hub with two production REST APIs: the Affiliate API, for searching offers, retrieving property details, checking real-time availability and syncing changes; and the Connectivity (provider) API, a v2 property-management surface of ~50 operations covering apartments, multi-unit listings, descriptions, photos, facilities, reviews, rates, length-of-stay pricing, availability, extra costs, discounts, booking terms, payment and cancellation configuration, and bookings. Authentication is via per-partner API keys (with an OAuth 2.0 security service and Bearer-JWT callbacks), sandbox and production hosts are separated, and Holidu runs a HackerOne bug-bounty program. Holidu is backed by EQT Ventures, HV Capital and Northzone.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Holidu the way a machine reads it — 52 machine-readable artifacts across 5 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Holidu scores 41.0/100 (developing), with a separate agent-readiness read of 41/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Holidu
Each block below is one kind of artifact we hold for Holidu. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 23
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Holidu Apartment API
The Apartment API from Holidu — 5 operation(s) for apartment.
Holidu Availabilities API
The Availabilities API from Holidu — 1 operation(s) for availabilities.
Holidu Availability API
The Availability API from Holidu — 1 operation(s) for availability.
Holidu Booking Terms API
The Booking Terms API from Holidu — 5 operation(s) for booking terms.
Holidu Bookings API
The Bookings API from Holidu — 3 operation(s) for bookings.
Holidu Changed API
The Changed API from Holidu — 1 operation(s) for changed.
Holidu Descriptions API
The Descriptions API from Holidu — 1 operation(s) for descriptions.
Holidu Details API
The Details API from Holidu — 1 operation(s) for details.
Holidu Discounts API
The Discounts API from Holidu — 2 operation(s) for discounts.
Holidu Extra Costs API
The Extra Costs API from Holidu — 1 operation(s) for extra costs.
Holidu Facilities API
The Facilities API from Holidu — 3 operation(s) for facilities.
Holidu LOS API
The LOS API from Holidu — 2 operation(s) for los.
Holidu LOS Push API API
Length of Stay pricing push operations.
Holidu MultiUnit API
The MultiUnit API from Holidu — 1 operation(s) for multiunit.
Holidu MultiUnit Facility API
The MultiUnit Facility API from Holidu — 1 operation(s) for multiunit facility.
Holidu MultiUnit Localization API
The MultiUnit Localization API from Holidu — 1 operation(s) for multiunit localization.
Holidu MultiUnit Photo API
The MultiUnit Photo API from Holidu — 1 operation(s) for multiunit photo.
Holidu Photos API
The Photos API from Holidu — 1 operation(s) for photos.
Holidu Rates API
The Rates API from Holidu — 1 operation(s) for rates.
Holidu Reviews API
The Reviews API from Holidu — 1 operation(s) for reviews.
Holidu Search API
The Search API from Holidu — 1 operation(s) for search.
Holidu Test API
The Test API from Holidu — 1 operation(s) for test.
Holidu Testa API
The Testa API from Holidu — 1 operation(s) for testa.
Scroll within the panel for all 23 ·
Open Collections 23
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONAffiliate Apartment API
OPEN COLLECTIONAffiliate Apartment Availabilities API
OPEN COLLECTIONAffiliate Apartment Availability API
OPEN COLLECTIONAffiliate Apartment Booking Terms API
OPEN COLLECTIONAffiliate Apartment Bookings API
OPEN COLLECTIONAffiliate Apartment Changed API
OPEN COLLECTIONAffiliate Apartment Descriptions API
OPEN COLLECTIONAffiliate Apartment Details API
OPEN COLLECTIONAffiliate Apartment Discounts API
OPEN COLLECTIONAffiliate Apartment Extra Costs API
OPEN COLLECTIONAffiliate Apartment Facilities API
OPEN COLLECTIONAffiliate Apartment LOS API
OPEN COLLECTIONAffiliate Apartment LOS Push API API
OPEN COLLECTIONAffiliate Apartment MultiUnit API
OPEN COLLECTIONAffiliate Apartment MultiUnit Facility API
OPEN COLLECTIONAffiliate Apartment MultiUnit Localization API
OPEN COLLECTIONAffiliate Apartment MultiUnit Photo API
OPEN COLLECTIONAffiliate Apartment Photos API
OPEN COLLECTIONAffiliate Apartment Rates API
OPEN COLLECTIONAffiliate Apartment Search API
OPEN COLLECTIONAffiliate Apartment Test API
OPEN COLLECTIONAffiliate Apartment Testa API
OPEN COLLECTIONScroll within the panel for all 23 ·
Event Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Holidu Webhooks
ASYNCAPISecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Holidu — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 4
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 6
Authentication, authorization, and security posture
Operate 5
Status, limits, changes, and where to get help
Company 1
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/holidu · machine-readable index on apis.io
This is an independent, third-party profile of Holidu, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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