Klook

Klook is a Hong Kong-headquartered travel and experiences booking platform for the "things to do" sector — attractions, tours and activities, theme parks, food and beverage, WiFi and SIM cards, and transportation passes. Klook publishes an Open API specification for merchants, suppliers, reservation systems and channel managers who want to distribute their inventory through Klook's website, app and partner channels. The specification is an implementation of OCTO (Open Connectivity for Tours, Activities and Attractions), the open standard for the in-destination experiences industry: the supplier implements the OCTO core endpoints (Supplier, Products, Availability, Bookings) at their own host and Klook consumes them as the reseller, with optional Capabilities negotiated through the Octo-Capabilities header. Klook additionally runs an affiliate program and a merchant portal.

Klook publishes 4 APIs on the APIs.io network, including Availability API, Bookings API, Products API, and 1 more. Tagged areas include Company, Marketplace, Travel, Tours and Activities, and Booking.

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

Klook’s developer surface includes documentation, API reference, getting-started guide, signup flow, support, authentication, changelog, and 22 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.9/100 developing ▬ flat Agent 30/100 agent ready saas Full breakdown ↓
scored 2026-09-19 · rubric v0.22.0

1 APIs

Company Marketplace Travel Tours and Activities Booking Experience DistributionOCTOHospitality

Kin Score

Kin Score How this is scored →
scored 2026-09-19 · rubric v0.22.0

Composite quality — 42.9/100 · developing

Contract Quality 13.7 / 23

Developer Ergonomics 10.2 / 18

Access Clarity 3.8 / 18

Operational Transparency 2.8 / 12

Contract Governance 2.0 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 30/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 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/klook: 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 4

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

Klook Availability API

The Availability API from Klook — 2 operation(s) for availability.

Klook Bookings API

The Bookings API from Klook — 5 operation(s) for bookings.

Klook Products API

The Products API from Klook — 2 operation(s) for products.

Klook Supplier API

The Supplier API from Klook — 1 operation(s) for supplier.

Open Collections 5

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

API Collection

OPEN COLLECTION

OCTO API Specification Availability API

OPEN COLLECTION

OCTO API Specification Availability Bookings API

OPEN COLLECTION

OCTO API Specification Availability Products API

OPEN COLLECTION

OCTO API Specification Availability Supplier API

OPEN COLLECTION

Event Specifications 1

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

Klook Notifications Webhooks

ASYNCAPI

Security Posture 2

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

Klook Authentication

http · 1 scheme

SECURITY

Klook Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

MerchantPortal

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

DataModel

Webhooks

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 3

The organization behind the API

Website

Website

Partners

Partners

About

About

Other 4

Properties that don't map to a standard resource type

CapabilityMap

Affiliate

CookiePolicy

Overlay

Source (apis.yml)

aid: klook
name: Klook
description: 'Klook is a Hong Kong-headquartered travel and experiences booking platform for the "things to do" sector — attractions,
  tours and activities, theme parks, food and beverage, WiFi and SIM cards, and transportation passes. Klook publishes an
  Open API specification for merchants, suppliers, reservation systems and channel managers who want to distribute their inventory
  through Klook''s website, app and partner channels. The specification is an implementation of OCTO (Open Connectivity for
  Tours, Activities and Attractions), the open standard for the in-destination experiences industry: the supplier implements
  the OCTO core endpoints (Supplier, Products, Availability, Bookings) at their own host and Klook consumes them as the reseller,
  with optional Capabilities negotiated through the Octo-Capabilities header. Klook additionally runs an affiliate program
  and a merchant portal.'
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://res.klook.com/image/upload/klook_logo.png
url: https://raw.githubusercontent.com/api-evangelist/klook/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- bessemer-venture-partners
- hongshan
- softbank-vision-fund
x-tier: profiled
x-tier-reason: openapi-and-docs-harvested
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Marketplace
- Travel
- Tours and Activities
- Booking
- Experience
- Distribution
- OCTO
- Hospitality
tags_raw:
- Company
- Marketplaces
- Travel
- Tours and Activities
- Booking
- Experiences
- Distribution
- OCTO
- Hospitality
apis:
- aid: klook:klook-availability-api
  name: Klook Availability API
  description: The Availability API from Klook — 2 operation(s) for availability.
  humanURL: https://klook.gitbook.io/openapi
  baseURL: https://{supplier_endpoint}/octo
  tags:
  - Availability
  properties:
  - type: OpenAPI
    url: openapi/klook-availability-api-openapi.yml
  - type: Documentation
    url: https://klook.gitbook.io/openapi
  - type: APIReference
    url: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md
  - type: GettingStarted
    url: https://klook.gitbook.io/openapi/getting-started/integration-process.md
  - type: Authentication
    url: https://klook.gitbook.io/openapi/getting-started/authentication.md
  - type: ErrorCodes
    url: https://klook.gitbook.io/openapi/getting-started/errors.md
- aid: klook:klook-bookings-api
  name: Klook Bookings API
  description: The Bookings API from Klook — 5 operation(s) for bookings.
  humanURL: https://klook.gitbook.io/openapi
  baseURL: https://{supplier_endpoint}/octo
  tags:
  - Booking
  tags_raw:
  - Bookings
  properties:
  - type: OpenAPI
    url: openapi/klook-bookings-api-openapi.yml
  - type: Documentation
    url: https://klook.gitbook.io/openapi
  - type: APIReference
    url: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md
  - type: GettingStarted
    url: https://klook.gitbook.io/openapi/getting-started/integration-process.md
  - type: Authentication
    url: https://klook.gitbook.io/openapi/getting-started/authentication.md
  - type: ErrorCodes
    url: https://klook.gitbook.io/openapi/getting-started/errors.md
- aid: klook:klook-products-api
  name: Klook Products API
  description: The Products API from Klook — 2 operation(s) for products.
  humanURL: https://klook.gitbook.io/openapi
  baseURL: https://{supplier_endpoint}/octo
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/klook-products-api-openapi.yml
  - type: Documentation
    url: https://klook.gitbook.io/openapi
  - type: APIReference
    url: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md
  - type: GettingStarted
    url: https://klook.gitbook.io/openapi/getting-started/integration-process.md
  - type: Authentication
    url: https://klook.gitbook.io/openapi/getting-started/authentication.md
  - type: ErrorCodes
    url: https://klook.gitbook.io/openapi/getting-started/errors.md
- aid: klook:klook-supplier-api
  name: Klook Supplier API
  description: The Supplier API from Klook — 1 operation(s) for supplier.
  humanURL: https://klook.gitbook.io/openapi
  baseURL: https://{supplier_endpoint}/octo
  tags:
  - Supplier
  properties:
  - type: OpenAPI
    url: openapi/klook-supplier-api-openapi.yml
  - type: Documentation
    url: https://klook.gitbook.io/openapi
  - type: APIReference
    url: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md
  - type: GettingStarted
    url: https://klook.gitbook.io/openapi/getting-started/integration-process.md
  - type: Authentication
    url: https://klook.gitbook.io/openapi/getting-started/authentication.md
  - type: ErrorCodes
    url: https://klook.gitbook.io/openapi/getting-started/errors.md
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/klook-capability-edges.yml
  name: Klook Business Capability Map
- type: Website
  url: https://www.klook.com/en-US/
- type: DeveloperPortal
  url: https://klook.gitbook.io/openapi
- type: Documentation
  url: https://klook.gitbook.io/openapi
- type: APIReference
  url: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md
- type: GettingStarted
  url: https://klook.gitbook.io/openapi/getting-started/integration-process.md
- type: Partners
  url: https://www.klook.com/partner/
- type: Affiliate
  url: https://affiliate.klook.com/home
- type: MerchantPortal
  url: https://merchant.klook.com/
- type: SignUp
  url: https://affiliate.klook.com/home
- type: TermsOfService
  url: https://www.klook.com/conditions/
- type: PrivacyPolicy
  url: https://www.klook.com/en-US/policy/
- type: CookiePolicy
  url: https://www.klook.com/en-US/cookiepolicy/
- type: Support
  url: https://www.klook.com/en-US/faq/
- type: About
  url: https://www.klook.com/en-US/about/
- type: LLMsTxt
  url: llms/klook-llms.txt
- type: Authentication
  url: authentication/klook-authentication.yml
- type: Conventions
  url: conventions/klook-conventions.yml
- type: ErrorCatalog
  url: errors/klook-error-codes.yml
- type: Conformance
  url: conformance/klook-conformance.yml
- type: Lifecycle
  url: lifecycle/klook-lifecycle.yml
- type: ChangeLog
  url: changelog/klook-changelog.yml
- type: DataModel
  url: data-model/klook-data-model.yml
- type: Overlay
  url: overlays/klook-octo-overlay.yaml
- type: X-MCPServerCandidate
  url: mcp/klook-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: AgentSkill
  url: skills/_index.yml
- type: Webhooks
  url: asyncapi/klook-notifications-webhooks.yml
- type: Packages
  url: packages/klook-packages.yml
- type: DomainSecurity
  url: security/klook-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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