HeadOut

Headout is a global experiences marketplace that curates and sells tickets to tours, attractions, events, shows and activities across major cities worldwide. For developers, Headout operates a public Partner API (github.com/headout/api-docs) that lets affiliates and resellers browse the catalog (products, categories, collections and subcategories by city and language), pull live inventory and per-person/per-group pricing for a variant, and place bookings through a two-step create-then-capture flow. The API is versioned by URI path (v1 and v2 under /api/public/), authenticates with a Headout-Auth API key (pk_ production / tk_ sandbox), paginates with offset/limit, and returns a structured error envelope. A registrable seatmap iframe component is offered for seat selection. Headout is backed by 500 Global and Version One Ventures.

HeadOut publishes 1 API on the APIs.io network: Partner API. Tagged areas include Travel, Tours and Activities, Experiences, Attractions, and Ticketing.

HeadOut’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, signup flow, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

46.3/100 developing Agent 74/100 agent native Full breakdown ↓
scored 2026-07-20 · rubric v0.4

1 APIs 1 MCP Servers 0 Features

TravelTours and ActivitiesExperiencesAttractionsTicketingBookingsMarketplacePartner APIAffiliateEvents

API Rating

API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4

Composite quality — 46.3/100 · developing

Contract Quality 13.7 / 25

Developer Ergonomics 14.8 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 1.7 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 74/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 15 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 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/headout: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal

GettingStarted

SignUp

Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

MCPServer

LLMsTxt

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

Conformance

DataModel

Components

Scroll for all 7

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

Support

Support

Deprecation

Deprecation

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: headout
name: HeadOut
description: Headout is a global experiences marketplace that curates and sells tickets to tours, attractions, events, shows
  and activities across major cities worldwide. For developers, Headout operates a public Partner API (github.com/headout/api-docs)
  that lets affiliates and resellers browse the catalog (products, categories, collections and subcategories by city and language),
  pull live inventory and per-person/per-group pricing for a variant, and place bookings through a two-step create-then-capture
  flow. The API is versioned by URI path (v1 and v2 under /api/public/), authenticates with a Headout-Auth API key (pk_ production
  / tk_ sandbox), paginates with offset/limit, and returns a structured error envelope. A registrable seatmap iframe component
  is offered for seat selection. Headout is backed by 500 Global and Version One Ventures.
url: https://raw.githubusercontent.com/api-evangelist/headout/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
- version-one-ventures
x-tier: profiled
x-tier-reason: partner-api-enriched
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://cdn-imgix.headout.com/static-pages/logo.png
tags:
- Travel
- Tours and Activities
- Experiences
- Attractions
- Ticketing
- Bookings
- Marketplace
- Partner API
- Affiliate
- Events
apis:
- name: Headout Partner API
  description: Public Partner API for the Headout experiences marketplace — catalog (products, categories, collections, subcategories),
    inventory & pricing, and the two-step booking flow. Versioned by URI path (v1/v2), Headout-Auth API key.
  humanURL: https://github.com/headout/api-docs
  baseURL: https://www.headout.com/api/public/v2
  tags:
  - Travel
  - Experiences
  - Booking
  - Inventory
  properties:
  - type: OpenAPI
    url: openapi/headout-partner-openapi.yml
  - type: Documentation
    url: https://github.com/headout/api-docs
  - type: APIReference
    url: https://github.com/headout/api-docs/tree/master/apis
  - type: GettingStarted
    url: https://github.com/headout/api-docs/wiki/Integration-flow-for-Partners
  - type: Authentication
    url: authentication/headout-authentication.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/headout-agentic-access.yml
- type: DomainSecurity
  url: security/headout-domain-security.yml
- type: Website
  url: https://headout.com
- type: DeveloperPortal
  url: https://github.com/headout/api-docs
- type: Documentation
  url: https://github.com/headout/api-docs
- type: APIReference
  url: https://github.com/headout/api-docs/tree/master/apis
- type: GettingStarted
  url: https://github.com/headout/api-docs/wiki/Integration-flow-for-Partners
- type: GitHubOrganization
  url: https://github.com/headout
- type: Blog
  url: https://www.headout.com/blog/
- type: Support
  url: https://www.headout.com/help/
- type: SignUp
  url: https://partner.headout.com/affiliate/
- type: TermsOfService
  url: https://www.headout.com/terms-of-use/
- type: PrivacyPolicy
  url: https://www.headout.com/privacy-policy/
- type: Authentication
  url: authentication/headout-authentication.yml
- type: Conventions
  url: conventions/headout-conventions.yml
- type: Idempotency
  url: conventions/headout-conventions.yml
- type: ErrorCatalog
  url: errors/headout-error-codes.yml
- type: Lifecycle
  url: lifecycle/headout-lifecycle.yml
- type: Deprecation
  url: lifecycle/headout-lifecycle.yml
- type: MCPServer
  url: mcp/headout-mcp.yml
- type: LLMsTxt
  url: llms/headout-llms.txt
- type: Overlay
  url: overlays/headout-partner-overlay.yaml
- type: Conformance
  url: conformance/headout-conformance.yml
- type: DataModel
  url: data-model/headout-data-model.yml
- type: Sandbox
  url: sandbox/headout-sandbox.yml
- type: Components
  url: components/headout-components.yml
- 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