Eventzilla

Eventzilla is an event registration and ticketing platform that provides a REST API for managing events, ticket types, registrations, discounts, and attendee check-in workflows. The API uses predictable, resource-oriented URLs organized around the JSON format, enabling integrations for event creation, attendee management, order processing, and check-in operations.

Eventzilla publishes 7 API contracts indexed on the APIs.io network, including Attendees API, Categories API, Checkout API, and 4 more. Tagged areas include Event, Ticketing, Registration, Attendees, and Event Management.

The Eventzilla catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Eventzilla’s developer surface includes authentication, developer portal, documentation, pricing, engineering blog, support, signup flow, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

36.1/100 thin ▬ flat Agent 21/100 agent aware Front door AI 1/6 silent Heartbeat 98/100 alive saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 published contract

Event Ticketing Registration Attendees Event Management

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 36.1/100 · thin

Contract Quality 10.2 / 19

Developer Ergonomics 5.7 / 15

Access Clarity 5.4 / 15

Operational Transparency 0.5 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 2.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 21/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 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 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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 Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

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 36.2 — up to +12.8 composite points Ask about this →
Operational Transparency scores 4.8 — up to +12.4 composite points Ask about this →
Developer Ergonomics scores 38.1 — up to +12.4 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/eventzilla/apis.yml: open an issue on github.com/api-evangelist/eventzilla 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
Events and Ticketing Platforms	builds-on	18.6	-	-
Zoom App Marketplace and Partner Ecosystem (builders and partners on Zoom)	builds-on	18.6	-	-

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.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Eventzilla Attendees API

Attendee management and check-in operations

Eventzilla Categories API

Event category operations

Eventzilla Checkout API

Checkout workflow operations

Eventzilla Events API

Event listing and detail operations

Eventzilla Tickets API

Ticket type operations

Eventzilla Transactions API

Transaction and order operations

Eventzilla Users API

Organizer and sub-organizer operations

Scroll for all 7

Open Collections 7

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

Eventzilla Attendees API

OPEN COLLECTION

Eventzilla Attendees Categories API

OPEN COLLECTION

Eventzilla Attendees Checkout API

OPEN COLLECTION

Eventzilla Attendees Events API

OPEN COLLECTION

Eventzilla Attendees Tickets API

OPEN COLLECTION

Eventzilla Attendees Transactions API

OPEN COLLECTION

Eventzilla Attendees Users API

OPEN COLLECTION

Scroll for all 7

Eventzilla API pricing

Pricing Plans 4

Published pricing tiers and plan structures.

Basic

0 plans

PLANS

Plus

0 plans

PLANS

Pro

0 plans

PLANS

Unlimited

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Default

2 limits

RATE LIMITS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Eventzilla

8 quoted statements, read from Eventzilla's own page on 2026-11-09.

TERMS

Eligibility 1

Who may sign up and where, quoted from its own terms.

Eventzilla

2 quoted statements, read from Eventzilla's own page on 2026-11-09.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

Eventzilla

1 quoted statement, read from Eventzilla's own page on 2026-11-09.

AI PREFS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Overview

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

context Context

56 classes · 6 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Eventzilla — jsonschema rules

5 rules · 4 warn-severity 1 info-severity

SPECTRAL

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.

Eventzilla Categories Api Certification Overlay

1 action · security · eventzilla-categories-api-openapi.yml

DERIVED

JSON Schema 5

Standalone JSON Schema definitions for this provider's data models.

Attendee

20 properties

JSON SCHEMA

Event

25 properties

JSON SCHEMA

Ticket

23 properties

JSON SCHEMA

Transaction

20 properties

JSON SCHEMA

User

20 properties

JSON SCHEMA

Examples 5

Example request and response payloads for these APIs.

Checkin Request

2 fields

EXAMPLE

Checkin Response

6 fields

EXAMPLE

Checkout Create Request

4 fields

EXAMPLE

Checkout Create Response

8 fields

EXAMPLE

List Events

2 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Eventzilla Authentication

apiKey · 1 scheme

SECURITY

Eventzilla Domain Security

TLSv1.2 · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Eventzilla Agentic Access

19 operations · 7 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal

Portal

Login

Signup

Signup

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

AIPreferences

AIPreferences

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

RateLimits

RateLimits

Support

Support

Commercial 6

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

UsageTerms

Company 3

The organization behind the API

Website

Website

Blog

Blog

About

About

Other 1

Properties that don't map to a standard resource type

Eligibility

Eligibility

Source (apis.yml)

name: Eventzilla
description: Eventzilla is an event registration and ticketing platform that provides a REST API for managing events, ticket
  types, registrations, discounts, and attendee check-in workflows. The API uses predictable, resource-oriented URLs organized
  around the JSON format, enabling integrations for event creation, attendee management, order processing, and check-in operations.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  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: '2026-11-13'
  method: derived
image: https://www.eventzilla.net/favicon.ico
x-docs-platform: redocly
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Event
- Ticketing
- Registration
- Attendees
- Event Management
tags_raw:
- Events
- Ticketing
- Registration
- Attendees
- Event Management
url: https://raw.githubusercontent.com/api-evangelist/eventzilla/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: eventzilla:eventzilla-attendees-api
  name: Eventzilla Attendees API
  description: Attendee management and check-in operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Attendees
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-attendees-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-categories-api
  name: Eventzilla Categories API
  description: Event category operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Categories
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-categories-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-checkout-api
  name: Eventzilla Checkout API
  description: Checkout workflow operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Checkout
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-checkout-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-events-api
  name: Eventzilla Events API
  description: Event listing and detail operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-events-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-tickets-api
  name: Eventzilla Tickets API
  description: Ticket type operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Ticketing
  tags_raw:
  - Tickets
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-tickets-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-transactions-api
  name: Eventzilla Transactions API
  description: Transaction and order operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-transactions-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
- aid: eventzilla:eventzilla-users-api
  name: Eventzilla Users API
  description: Organizer and sub-organizer operations
  humanURL: https://developer.eventzilla.net/docs/
  baseURL: https://www.eventzillaapi.net/api/v2/
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/eventzilla-users-api-openapi.yml
  - type: Documentation
    url: https://developer.eventzilla.net/docs/
  - type: Authentication
    url: https://developer.eventzilla.net/docs/
common:
- type: Plans
  url: plans/basic.yml
- type: RateLimits
  url: rate-limits/default.yml
- type: FinOps
  url: finops/overview.yml
- type: Website
  url: https://www.eventzilla.net/
- type: AgenticAccess
  url: agentic-access/eventzilla-agentic-access.yml
- type: DomainSecurity
  url: security/eventzilla-domain-security.yml
- type: Authentication
  url: authentication/eventzilla-authentication.yml
- type: Portal
  url: https://developer.eventzilla.net/
- type: Documentation
  url: https://developer.eventzilla.net/docs/
- type: Pricing
  url: https://www.eventzilla.net/pricing/
- type: Blog
  url: https://www.eventzilla.net/blog/
- type: Support
  url: https://community.eventzilla.net/
- type: TermsOfService
  url: https://www.eventzilla.net/terms-conditions/
- type: PrivacyPolicy
  url: https://www.eventzilla.net/privacy-policy/
- type: Login
  url: https://app.eventzilla.net/us/login
- type: Signup
  url: https://www.eventzilla.net/
- type: About
  url: https://www.eventzilla.net/about/
- type: UsageTerms
  url: terms/eventzilla-terms-of-service.yml
- type: Eligibility
  url: eligibility/eventzilla-eligibility.yml
- type: AIPreferences
  url: ai-preferences/eventzilla-ai-preferences.yml
modified: '2026-06-13'
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Eventzilla API — frequently asked questions

Does Eventzilla have an API?

Yes. APIs.io lists 7 APIs from Eventzilla, including Eventzilla Attendees API, Eventzilla Categories API and Eventzilla Checkout API, and 4 more.

Is there an OpenAPI specification for the Eventzilla API?

Yes. APIs.io indexes 7 OpenAPI specifications for Eventzilla, each linked for download from this page.

How do I authenticate with the Eventzilla API?

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

Is the Eventzilla API ready for AI agents?

Eventzilla has a Kin Score of 36.1 out of 100 (thin) and an Agent Readiness score of 21.3 (agent-aware), scored by API Evangelist on 2026-11-13.

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