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 API contracts indexed 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 📡 Profile data on GitHub

45.3/100 developing ▬ flat Agent 29/100 agent ready saas Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 published contract 3 Agent Skills

Company Marketplace Travel Tours and Activities Booking Experience DistributionOCTOHospitality

What this lets a business do 3

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Reservation & Booking Management

BC-4020

Bookings

POST /bookings POST /bookings/{uuid}/confirm POST /bookings/{uuid}/cancel POST /bookings/{uuid}/extend

Consumer Travel, Events & Local Services

AE-210

Availability

POST /availability/calendar POST /availability

Travel Product & Inventory Management

BC-4000

Products

GET /products GET /products/{id}

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 45.3/100 · developing

Contract Quality 11.8 / 21

Developer Ergonomics 9.6 / 17

Access Clarity 5.8 / 17

Operational Transparency 2.6 / 11

Contract Governance 1.9 / 10

Discoverability 5.6 / 9

Regulatory Posture 3.7 / 15

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 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

Pagination 0 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 34.2 — up to +13.2 composite points
Contract Quality scores 55.6 — up to +11.1 composite points
Operational Transparency scores 23.7 — up to +9.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/klook/apis.yml: open an issue on github.com/api-evangelist/klook to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
OCTO Tours, Activities & Attractions Connectivity (members, known implementations, self-certification)	standard	58.1	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

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 4

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

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

Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Cancel or amend a Klook booking

AGENT SKILL

Reserve and confirm a Klook booking

AGENT SKILL

Sync a Klook supplier product catalog and pricing

AGENT SKILL

Event Specifications 1

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

Klook Notifications Webhooks

ASYNCAPI

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Klook Octo Overlay

13 actions · documentation · klook-octo-openapi-original.json

DERIVED

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'
x-docs-platform: gitbook
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
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

Klook API — frequently asked questions

Does Klook have an API?

Yes. APIs.io lists 4 APIs from Klook, including Klook Availability API, Klook Bookings API and Klook Products API, and 1 more.

Is there an OpenAPI specification for the Klook API?

Yes. APIs.io indexes 4 OpenAPI specifications for Klook, each linked for download from this page.

How do I authenticate with the Klook API?

Klook uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as Klook Authentication.

Is the Klook API ready for AI agents?

Klook has a Kin Score of 45.3 out of 100 (developing) and an Agent Readiness score of 29.1 (agent-ready), scored by API Evangelist on 2026-10-31.

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