Attendease

aid: attendease
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://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/attendease.png
name: Attendease
description: 'Attendease (now EventUp Planner, following its acquisition by Tripleseat) is an event and meeting management
  platform for planning, promoting, and running virtual, in-person, and hybrid events such as conferences, webinars, roadshows,
  and product launches. Attendease exposes a public developer API in two tiers: an Event API scoped to a single event subdomain
  (attendee tokens, sessions, presenters, surveys, sponsors, rooms, venues, and content) and an Organization API (`/api/v2/`)
  that spans business units, events, members, attendees, session attendance, check-ins, partners, and contact lists. The Organization
  API is authenticated with HMAC-SHA1 request signing (`Authorization: APIAuth access_key:signature`) while the Event API
  uses attendee/event tokens and HTTP Basic auth. First-party JavaScript and Ruby SDKs plus a Jekyll plugin are published
  to npm and RubyGems.'
url: https://raw.githubusercontent.com/api-evangelist/attendease/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-acquired-by: tripleseat
x-rebranded-to: EventUp Planner
tags:
- Company
- Events
- Event Management
- Event Marketing
- Conferences
- Webinars
- Attendees
- Registration
- SaaS
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-08-13'
apis:
- name: Attendease Organization API
  description: Organization-level REST API (v2) spanning business units, events, members, attendees, session attendance, check-ins,
    partners, and contact lists. Authenticated with HMAC-SHA1 request signing (APIAuth). JSON responses with a pagination
    envelope and custom metadata filtering.
  humanURL: https://developer.attendease.com/
  baseURL: https://your-org.attendease.org/api/v2/
  tags:
  - Events
  - Attendees
  - Organization
  properties:
  - type: Authentication
    url: authentication/attendease-authentication.yml
  - type: Conventions
    url: conventions/attendease-conventions.yml
  - type: ErrorCatalog
    url: errors/attendease-problem-types.yml
  - type: DataModel
    url: data-model/attendease-data-model.yml
  - type: MCPServer
    url: mcp/attendease-mcp.yml
  - type: RateLimits
    url: rate-limits/attendease-rate-limits.yml
  - type: Plans
    url: plans/attendease-plans-pricing.yml
  - type: Lifecycle
    url: lifecycle/attendease-lifecycle.yml
- name: Attendease Event API
  description: Event-scoped REST API bound to a single event subdomain covering event properties, sessions and session instances,
    presenters, surveys, sponsors, rooms, venues, filters, and content. Authenticated with attendee/event tokens or HTTP Basic
    auth.
  humanURL: https://developer.attendease.com/
  baseURL: https://your-event.attendease.com/api/
  tags:
  - Events
  - Sessions
  - Presenters
  properties:
  - type: Authentication
    url: authentication/attendease-authentication.yml
  - type: Conventions
    url: conventions/attendease-conventions.yml
  - type: ErrorCatalog
    url: errors/attendease-problem-types.yml
  - type: RateLimits
    url: rate-limits/attendease-rate-limits.yml
  - type: Plans
    url: plans/attendease-plans-pricing.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/attendease-domain-security.yml
- type: Website
  url: https://eventupplanner.com
- type: DeveloperPortal
  url: https://developer.attendease.com/
- type: Documentation
  url: https://developer.attendease.com/
- type: APIReference
  url: https://developer.attendease.com/
- type: SignUp
  url: https://dashboard.attendease.com/
- type: Login
  url: https://dashboard.attendease.com/
- type: Support
  url: https://eventupplanner.zendesk.com/hc/en-us
- type: Blog
  url: https://eventupplanner.com/blog/
- type: Integrations
  url: https://eventupplanner.com/integrations/
- type: TermsOfService
  url: https://eventupplanner.com/terms-of-use/
- type: PrivacyPolicy
  url: https://eventupplanner.com/privacy-policy/
- type: GitHubOrganization
  url: https://github.com/attendease
- type: Packages
  url: packages/attendease-packages.yml
- type: SDKs
  url: packages/attendease-packages.yml
- type: Authentication
  url: authentication/attendease-authentication.yml
- type: Conventions
  url: conventions/attendease-conventions.yml
- type: ErrorCatalog
  url: errors/attendease-problem-types.yml
- type: Lifecycle
  url: lifecycle/attendease-lifecycle.yml
- type: Conformance
  url: conformance/attendease-conformance.yml
- type: DataModel
  url: data-model/attendease-data-model.yml
- type: MCPServer
  url: mcp/attendease-mcp.yml
- type: LLMsTxt
  url: llms/attendease-llms.txt
- type: Components
  url: components/attendease-components.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Plans
  url: plans/attendease-plans-pricing.yml
- type: RateLimits
  url: rate-limits/attendease-rate-limits.yml
- type: Compliance
  url: conformance/attendease-conformance.yml
- type: Pricing
  url: https://eventupplanner.com/plans-and-pricing/
- type: StatusPage
  url: https://status.attendease.com/
- type: Accessibility
  url: https://eventupplanner.com/accessibility/
- type: HelpCenter
  url: https://eventupplanner.zendesk.com/hc/en-us
- type: ServicesAgreement
  url: https://eventupplanner.com/services-agreement/
x-enrichment:
  date: '2026-08-13'
  status: enriched
  artifacts_added: 3
  pass: local-v1
  note: 'Contract discovery re-run against all four hosts — no OpenAPI/GraphQL/MCP/A2A surface exists; developer.attendease.com
    answers every path with the same 243KB Slate HTML shell. New: plans (API access is Enterprise-only), rate-limits, well-known
    probe index. Upgraded: lifecycle (live StatusCake status page found at status.attendease.com), packages (dated registry
    currency — SDKs unreleased since 2017), conformance (VPAT/WCAG 2.1 AA/ADA; no security attestation), authentication (token
    lifecycle from help center).'