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.

Holidu publishes 23 APIs on the APIs.io network, including Apartment API, Availabilities API, Availability API, and 20 more. Tagged areas include Company, Travel And Leisure, Vacation Rentals, Short-Term Rentals, and Hospitality.

The Holidu catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Holidu’s developer surface includes documentation, API reference, getting-started guide, changelog, support, signup flow, authentication, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

41.0/100 developing ▬ flat Agent 41/100 agent native saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

5 APIs

Company Travel And Leisure Vacation Rentals Short-Term Rentals Hospitality Property Management Booking Channel Manager Connectivity Affiliates

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 41.0/100 · developing

Contract Quality 13.4 / 23

Developer Ergonomics 7.6 / 18

Access Clarity 0.0 / 18

Operational Transparency 5.7 / 12

Contract Governance 0.5 / 11

Discoverability 7.3 / 9

Create-or-Update Ergonomics 3.3 / 10

Agent readiness — 41/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 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

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

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 github.com/api-evangelist/holidu: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 23

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 for all 23

Open Collections 23

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Affiliate Apartment API

OPEN COLLECTION

Affiliate Apartment Availabilities API

OPEN COLLECTION

Affiliate Apartment Availability API

OPEN COLLECTION

Affiliate Apartment Booking Terms API

OPEN COLLECTION

Affiliate Apartment Bookings API

OPEN COLLECTION

Affiliate Apartment Changed API

OPEN COLLECTION

Affiliate Apartment Descriptions API

OPEN COLLECTION

Affiliate Apartment Details API

OPEN COLLECTION

Affiliate Apartment Discounts API

OPEN COLLECTION

Affiliate Apartment Extra Costs API

OPEN COLLECTION

Affiliate Apartment Facilities API

OPEN COLLECTION

Affiliate Apartment LOS API

OPEN COLLECTION

Affiliate Apartment LOS Push API API

OPEN COLLECTION

Affiliate Apartment MultiUnit API

OPEN COLLECTION

Affiliate Apartment MultiUnit Facility API

OPEN COLLECTION

Affiliate Apartment MultiUnit Localization API

OPEN COLLECTION

Affiliate Apartment MultiUnit Photo API

OPEN COLLECTION

Affiliate Apartment Photos API

OPEN COLLECTION

Affiliate Apartment Rates API

OPEN COLLECTION

Affiliate Apartment Search API

OPEN COLLECTION

Affiliate Apartment Test API

OPEN COLLECTION

Affiliate Apartment Testa API

OPEN COLLECTION

Scroll for all 23

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Holidu Webhooks

ASYNCAPI

Security Posture 3

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

Holidu Authentication

apiKey/http/oauth2 · 5 schemes

SECURITY

Holidu Domain Security

TLSv1.3 · DMARC

SECURITY

Holidu Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Holidu Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Holidu Agentic Access

58 operations · 29 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 4

Reference material describing how the API behaves

Documentation

APIReference

OpenAPI

OpenAPI

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

AgenticAccess

AgenticAccess

X-MCPServerCandidate

X-MCPServerCandidate

WellKnown

WellKnown

AgentSkill

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

DataModel

Conformance

Webhooks

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 6

Authentication, authorization, and security posture

Authentication

OAuthScopes

SecurityTxt

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 5

Status, limits, changes, and where to get help

ChangeLog

StatusPage

Support

Deprecation

ChangeLog

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: holidu
name: Holidu
description: '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.'
url: https://raw.githubusercontent.com/api-evangelist/holidu/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- eqt-ventures
- hv-capital
- northzone
x-tier: enriched
x-tier-reason: developer-hub-with-openapi
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: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Travel And Leisure
- Vacation Rentals
- Short-Term Rentals
- Hospitality
- Property Management
- Booking
- Channel Manager
- Connectivity
- Affiliates
tags_raw:
- Company
- Travel And Leisure
- Vacation Rentals
- Short-Term Rentals
- Hospitality
- Property Management
- Booking
- Channel Manager
- Connectivity
- Affiliate
apis:
- aid: holidu:holidu-apartment-api
  name: Holidu Apartment API
  description: The Apartment API from Holidu — 5 operation(s) for apartment.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Apartment
  properties:
  - type: OpenAPI
    url: openapi/holidu-apartment-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-availabilities-api
  name: Holidu Availabilities API
  description: The Availabilities API from Holidu — 1 operation(s) for availabilities.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Availabilities
  properties:
  - type: OpenAPI
    url: openapi/holidu-availabilities-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-availability-api
  name: Holidu Availability API
  description: The Availability API from Holidu — 1 operation(s) for availability.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Availability
  properties:
  - type: OpenAPI
    url: openapi/holidu-availability-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-booking-terms-api
  name: Holidu Booking Terms API
  description: The Booking Terms API from Holidu — 5 operation(s) for booking terms.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Booking Terms
  properties:
  - type: OpenAPI
    url: openapi/holidu-booking-terms-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-bookings-api
  name: Holidu Bookings API
  description: The Bookings API from Holidu — 3 operation(s) for bookings.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Bookings
  properties:
  - type: OpenAPI
    url: openapi/holidu-bookings-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-changed-api
  name: Holidu Changed API
  description: The Changed API from Holidu — 1 operation(s) for changed.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Changed
  properties:
  - type: OpenAPI
    url: openapi/holidu-changed-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-descriptions-api
  name: Holidu Descriptions API
  description: The Descriptions API from Holidu — 1 operation(s) for descriptions.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Descriptions
  properties:
  - type: OpenAPI
    url: openapi/holidu-descriptions-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-details-api
  name: Holidu Details API
  description: The Details API from Holidu — 1 operation(s) for details.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Details
  properties:
  - type: OpenAPI
    url: openapi/holidu-details-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-discounts-api
  name: Holidu Discounts API
  description: The Discounts API from Holidu — 2 operation(s) for discounts.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Discounts
  properties:
  - type: OpenAPI
    url: openapi/holidu-discounts-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-extra-costs-api
  name: Holidu Extra Costs API
  description: The Extra Costs API from Holidu — 1 operation(s) for extra costs.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Extra Costs
  properties:
  - type: OpenAPI
    url: openapi/holidu-extra-costs-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-facilities-api
  name: Holidu Facilities API
  description: The Facilities API from Holidu — 3 operation(s) for facilities.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Facilities
  properties:
  - type: OpenAPI
    url: openapi/holidu-facilities-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-los-api
  name: Holidu LOS API
  description: The LOS API from Holidu — 2 operation(s) for los.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - LOS
  properties:
  - type: OpenAPI
    url: openapi/holidu-los-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-los-push-api-api
  name: Holidu LOS Push API API
  description: Length of Stay pricing push operations.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - LOS Push API
  properties:
  - type: OpenAPI
    url: openapi/holidu-los-push-api-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-multiunit-api
  name: Holidu MultiUnit API
  description: The MultiUnit API from Holidu — 1 operation(s) for multiunit.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - MultiUnit
  properties:
  - type: OpenAPI
    url: openapi/holidu-multiunit-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-multiunit-facility-api
  name: Holidu MultiUnit Facility API
  description: The MultiUnit Facility API from Holidu — 1 operation(s) for multiunit facility.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - MultiUnit Facility
  properties:
  - type: OpenAPI
    url: openapi/holidu-multiunit-facility-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-multiunit-localization-api
  name: Holidu MultiUnit Localization API
  description: The MultiUnit Localization API from Holidu — 1 operation(s) for multiunit localization.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - MultiUnit Localization
  properties:
  - type: OpenAPI
    url: openapi/holidu-multiunit-localization-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-multiunit-photo-api
  name: Holidu MultiUnit Photo API
  description: The MultiUnit Photo API from Holidu — 1 operation(s) for multiunit photo.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - MultiUnit Photo
  properties:
  - type: OpenAPI
    url: openapi/holidu-multiunit-photo-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-photos-api
  name: Holidu Photos API
  description: The Photos API from Holidu — 1 operation(s) for photos.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Photos
  properties:
  - type: OpenAPI
    url: openapi/holidu-photos-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-rates-api
  name: Holidu Rates API
  description: The Rates API from Holidu — 1 operation(s) for rates.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Rates
  properties:
  - type: OpenAPI
    url: openapi/holidu-rates-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-reviews-api
  name: Holidu Reviews API
  description: The Reviews API from Holidu — 1 operation(s) for reviews.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Reviews
  properties:
  - type: OpenAPI
    url: openapi/holidu-reviews-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-search-api
  name: Holidu Search API
  description: The Search API from Holidu — 1 operation(s) for search.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Search
  properties:
  - type: OpenAPI
    url: openapi/holidu-search-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-test-api
  name: Holidu Test API
  description: The Test API from Holidu — 1 operation(s) for test.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags: []
  tags_raw:
  - Test
  properties:
  - type: OpenAPI
    url: openapi/holidu-test-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
- aid: holidu:holidu-testa-api
  name: Holidu Testa API
  description: The Testa API from Holidu — 1 operation(s) for testa.
  humanURL: https://developer.holidu.com/reference/intro-1
  baseURL: https://external-api.holidu.com
  tags:
  - Testa
  properties:
  - type: OpenAPI
    url: openapi/holidu-testa-api-openapi.yml
  - type: Sandbox
    url: sandbox/holidu-sandbox.yml
  - type: DataModel
    url: data-model/holidu-data-model.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://www.holidu.com/favicon.ico
common:
- type: CapabilityMap
  url: capabilities/holidu-capability-edges.yml
  name: Holidu Business Capability Map
- type: Overlay
  url: overlays/holidu-affiliate-api-overlay.yaml
- type: Website
  url: https://www.holidu.com/
- type: DeveloperPortal
  url: https://developer.holidu.com/
- type: Documentation
  url: https://developer.holidu.com/docs
- type: APIReference
  url: https://developer.holidu.com/reference
- type: GettingStarted
  url: https://developer.holidu.com/reference/how-to-integrate-with-holidu-capabilities-use-cases
- type: ChangeLog
  url: https://developer.holidu.com/changelog
- type: StatusPage
  url: https://status.holidu.com/
- type: Support
  url: https://developer.holidu.com/discuss
- type: SignUp
  url: https://partner.holidu.com/
- type: GitHubOrganization
  url: https://github.com/holidu
- type: LLMsTxt
  url: llms/holidu-llms.txt
- type: OpenAPI
  url: openapi/_original/holidu-affiliate-api.json
- type: OpenAPI
  url: openapi/_original/holidu-connectivity-api.json
- type: Authentication
  url: authentication/holidu-authentication.yml
- type: OAuthScopes
  url: scopes/holidu-scopes.yml
- type: AgenticAccess
  url: agentic-access/holidu-agentic-access.yml
- type: Conventions
  url: conventions/holidu-conventions.yml
- type: Idempotency
  url: conventions/holidu-conventions.yml
- type: ErrorCatalog
  url: errors/holidu-problem-types.yml
- type: Lifecycle
  url: lifecycle/holidu-lifecycle.yml
- type: Deprecation
  url: https://developer.holidu.com/changelog/hapi-version-1-is-deprecated
- type: ChangeLog
  url: changelog/holidu-changelog.yml
- type: Sandbox
  url: sandbox/holidu-sandbox.yml
- type: DataModel
  url: data-model/holidu-data-model.yml
- type: Conformance
  url: conformance/holidu-conformance.yml
- type: X-MCPServerCandidate
  url: mcp/holidu-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: Webhooks
  url: asyncapi/holidu-webhooks.yml
- type: WellKnown
  url: well-known/holidu-well-known.yml
- type: SecurityTxt
  url: well-known/holidu-security.txt
- type: DomainSecurity
  url: security/holidu-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/holidu-vulnerability-disclosure.yml
- type: Security
  url: https://www.holidu.com/.well-known/security.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/holidu"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/holidu/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/holidu/evidence"

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