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 1 API on the APIs.io network: Open API (OCTO). 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.

41.6/100 thin Agent 57/100 agent ready Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyMarketplacesTravelTours and ActivitiesBookingExperiencesDistributionOCTOHospitality

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 41.6/100 · thin
Contract Quality 9.4 / 25
Developer Ergonomics 13.0 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 3.1 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 57/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 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
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

Klook Open API (OCTO)

Klook's Open API specification for merchants, suppliers, reservation systems and channel managers. It is an implementation of the OCTO 1.0 standard: the supplier exposes the cor...

MCP Servers

klook-mcp.yml

MCP SERVER

Event Specifications

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Build 1

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Operate 2

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Other 3

Properties that don't map to a standard resource type

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.'
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-open-api
  name: Klook Open API (OCTO)
  description: 'Klook''s Open API specification for merchants, suppliers, reservation systems and channel managers. It is
    an implementation of the OCTO 1.0 standard: the supplier exposes the core Supplier, Products, Availability and Bookings
    endpoints and Klook calls them as the reseller. Bearer-token authentication, JSON over HTTPS, with optional behaviour
    negotiated per-request through the Octo-Capabilities header (octo/pricing, octo/content, octo/pickups, octo/webhooks).'
  humanURL: https://klook.gitbook.io/openapi
  baseURL: https://{supplier_endpoint}/octo
  x-baseurl-note: 'Supplier-hosted, not Klook-hosted. Klook is the API *consumer* in this integration: the documented endpoint
    form is https://{your endpoint name}/octo/{path} and each supplier provides Klook with their own host plus API keys during
    onboarding. Klook publishes no public API host of its own for this specification. Source: https://klook.gitbook.io/openapi/getting-started/endpoint-and-capabilities.md'
  tags:
  - Tours and Activities
  - Booking
  - Availability
  - Products
  - OCTO
  properties:
  - type: OpenAPI
    url: openapi/klook-octo-openapi-original.json
  - 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