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, Marketplaces, 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 21 more developer resources.

🌐 Visit website 📡 Source on GitHub
49.4/100 developing ▬ flat Agent 53/100 agent native Full breakdown ↓
scored 2026-08-10 · rubric v0.9.1
AccessSelf serve
4 APIs 1 MCP Servers
CompanyMarketplacesTravelTours and ActivitiesBookingExperiencesDistributionOCTOHospitality

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-10 · rubric v0.9.1
Composite quality — 49.4/100 · developing
Contract Quality 17.0 / 25
Developer Ergonomics 10.8 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 3.1 / 13
Governance 2.5 / 12
Discoverability 9.3 / 10
Agent readiness — 53/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. 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. Want it done for you? Prioritized profiling — $2,500 →

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.

MCP Servers 1

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

klook-mcp.yml

MCP SERVER

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
DeveloperPortal
 GettingStarted
GettingStarted
 MerchantPortal
MerchantPortal
 SignUp
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
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 ErrorCatalog
ErrorCatalog
 Conformance
Conformance
 Lifecycle
Lifecycle
 DataModel
DataModel
 Webhooks
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 3

Properties that don't map to a standard resource type

Affiliate
Affiliate
 CookiePolicy
CookiePolicy
 Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
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.'
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
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: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- 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:
  - 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:
  - 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: 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: MCPServer
  url: mcp/klook-mcp.yml
- 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