Howler

Howler is a South African event technology platform that consolidates ticketing, RFID cashless payments, and vendor and access-control management into a single system for event organisers and attendees. Founded out of the Barclays Accelerator powered by Techstars (2017) and Techstars-backed, Howler has processed over R1.5 billion in transactions across thousands of events. Its public Howler API v3 consumer portal exposes 67 operations for authentication (OAuth2, JWT, email OTP, third-party OAuth), tickets (buy, assign, transfer), cashless RFID tags, top-ups, and cashout to bank accounts, and a Howler Webhooks v1 surface pushes ticket, event, and payment events to partner endpoints.

Howler publishes 17 APIs on the APIs.io network, including Artists API, Assign Ticket API, Bank Account API, and 14 more. Tagged areas include Company, Event, Ticketing, Payments, and Cashless.

Howler’s developer surface includes documentation, API reference, developer portal, support, signup flow, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

39.8/100 developing ▬ flat Agent 35/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Company Event Ticketing PaymentsCashlessRFID Event Management Fintech South Africa

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 39.8/100 · developing

Contract Quality 9.2 / 19

Developer Ergonomics 6.7 / 15

Access Clarity 5.1 / 15

Operational Transparency 0.8 / 10

Contract Governance 0.4 / 9

Discoverability 5.7 / 8

Regulatory Posture 8.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 35/100 · agent ready

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 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments 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/.

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 github.com/api-evangelist/howler: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 17

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

Howler Artists API

The Artists API from Howler — 1 operation(s) for artists.

Howler Assign Ticket API

The Assign Ticket API from Howler — 1 operation(s) for assign ticket.

Howler Bank Account API

The Bank Account API from Howler — 3 operation(s) for bank account.

Howler Basic Authentication API

The Basic Authentication API from Howler — 4 operation(s) for basic authentication.

Howler Cashless Tags API

The Cashless Tags API from Howler — 2 operation(s) for cashless tags.

Howler Cashout API

The Cashout API from Howler — 4 operation(s) for cashout.

Howler Email OTP API

The Email OTP API from Howler — 2 operation(s) for email otp.

Howler Events API

The Events API from Howler — 2 operation(s) for events.

Howler OAuth API

The OAuth API from Howler — 4 operation(s) for oauth.

Howler Third Party OAuth API

The Third Party OAuth API from Howler — 5 operation(s) for third party oauth.

Howler Tickets API

The Tickets API from Howler — 7 operation(s) for tickets.

Howler Top Up API

The Top Up API from Howler — 1 operation(s) for top up.

Howler Top Up Cashless Tag API

The Top Up Cashless Tag API from Howler — 7 operation(s) for top up cashless tag.

Howler Top Up Ticket API

The Top Up Ticket API from Howler — 7 operation(s) for top up ticket.

Howler Topupables API

The Topupables API from Howler — 1 operation(s) for topupables.

Howler Transfer Ticket API

The Transfer Ticket API from Howler — 2 operation(s) for transfer ticket.

Howler User API

The User API from Howler — 4 operation(s) for user.

Scroll for all 17

Open Collections 19

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

API Collection

OPEN COLLECTION

Howler API v3 Artists API

OPEN COLLECTION

Howler API v3 Artists Assign Ticket API

OPEN COLLECTION

Howler API v3 Artists Bank Account API

OPEN COLLECTION

Howler API v3 Artists Basic Authentication API

OPEN COLLECTION

Howler API v3 Artists Cashless Tags API

OPEN COLLECTION

Howler API v3 Artists Cashout API

OPEN COLLECTION

Howler API v3 Artists Email OTP API

OPEN COLLECTION

Howler API v3 Artists Events API

OPEN COLLECTION

Howler API v3 Artists OAuth API

OPEN COLLECTION

Howler API v3 Artists Third Party OAuth API

OPEN COLLECTION

Howler API v3 Artists Tickets API

OPEN COLLECTION

Howler API v3 Artists Top Up API

OPEN COLLECTION

Howler API v3 Artists Top Up Cashless Tag API

OPEN COLLECTION

Howler API v3 Artists Top Up Ticket API

OPEN COLLECTION

Howler API v3 Artists Topupables API

OPEN COLLECTION

Howler API v3 Artists Transfer Ticket API

OPEN COLLECTION

Howler API v3 Artists User API

OPEN COLLECTION

Howler Webhooks v1

OPEN COLLECTION

Scroll for all 19

Security Posture 2

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

Howler Authentication

apiKey/http/oauth2 · 5 schemes

SECURITY

Howler Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Howler Scopes

3 scopes · authorizationCode

3 scopes

SCOPES

Agentic Access 1

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

Howler Agentic Access

67 operations · 37 acting · 2 human-in-the-loop

67 operations · 37 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal

Portal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

LLMsTxt

WellKnown

AgentSkill

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

DataModel

Conformance

Lifecycle

Webhooks

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

LinkedIn

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: howler
name: Howler
description: Howler is a South African event technology platform that consolidates ticketing, RFID cashless payments, and
  vendor and access-control management into a single system for event organisers and attendees. Founded out of the Barclays
  Accelerator powered by Techstars (2017) and Techstars-backed, Howler has processed over R1.5 billion in transactions across
  thousands of events. Its public Howler API v3 consumer portal exposes 67 operations for authentication (OAuth2, JWT, email
  OTP, third-party OAuth), tickets (buy, assign, transfer), cashless RFID tags, top-ups, and cashout to bank accounts, and
  a Howler Webhooks v1 surface pushes ticket, event, and payment events to partner endpoints.
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: 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://d1as2iufift1z3.cloudfront.net/assets/opengraph_image-5c147fd54bd5d4a768273fb2aa31296c060de259bc86df716898404aa091830c.jpg
url: https://raw.githubusercontent.com/api-evangelist/howler/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- techstars
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Event
- Ticketing
- Payments
- Cashless
- RFID
- Event Management
- Fintech
- South Africa
tags_raw:
- Company
- Events
- Ticketing
- Payments
- Cashless
- RFID
- Event Management
- Fintech
- South Africa
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- aid: howler:howler-artists-api
  name: Howler Artists API
  description: The Artists API from Howler — 1 operation(s) for artists.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Artists
  properties:
  - type: OpenAPI
    url: openapi/howler-artists-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-assign-ticket-api
  name: Howler Assign Ticket API
  description: The Assign Ticket API from Howler — 1 operation(s) for assign ticket.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Assign Ticket
  properties:
  - type: OpenAPI
    url: openapi/howler-assign-ticket-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-bank-account-api
  name: Howler Bank Account API
  description: The Bank Account API from Howler — 3 operation(s) for bank account.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Bank Account
  properties:
  - type: OpenAPI
    url: openapi/howler-bank-account-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-basic-authentication-api
  name: Howler Basic Authentication API
  description: The Basic Authentication API from Howler — 4 operation(s) for basic authentication.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Basic Authentication
  properties:
  - type: OpenAPI
    url: openapi/howler-basic-authentication-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-cashless-tags-api
  name: Howler Cashless Tags API
  description: The Cashless Tags API from Howler — 2 operation(s) for cashless tags.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Cashless Tags
  properties:
  - type: OpenAPI
    url: openapi/howler-cashless-tags-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-cashout-api
  name: Howler Cashout API
  description: The Cashout API from Howler — 4 operation(s) for cashout.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Cashout
  properties:
  - type: OpenAPI
    url: openapi/howler-cashout-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-email-otp-api
  name: Howler Email OTP API
  description: The Email OTP API from Howler — 2 operation(s) for email otp.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Email OTP
  tags_raw:
  - Email OTP
  properties:
  - type: OpenAPI
    url: openapi/howler-email-otp-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-events-api
  name: Howler Events API
  description: The Events API from Howler — 2 operation(s) for events.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/howler-events-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-oauth-api
  name: Howler OAuth API
  description: The OAuth API from Howler — 4 operation(s) for oauth.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Authentication
  tags_raw:
  - OAuth
  properties:
  - type: OpenAPI
    url: openapi/howler-oauth-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-third-party-oauth-api
  name: Howler Third Party OAuth API
  description: The Third Party OAuth API from Howler — 5 operation(s) for third party oauth.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Third Party OAuth
  properties:
  - type: OpenAPI
    url: openapi/howler-third-party-oauth-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-tickets-api
  name: Howler Tickets API
  description: The Tickets API from Howler — 7 operation(s) for tickets.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Tickets
  properties:
  - type: OpenAPI
    url: openapi/howler-tickets-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-top-up-api
  name: Howler Top Up API
  description: The Top Up API from Howler — 1 operation(s) for top up.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Top-Up
  tags_raw:
  - Top Up
  properties:
  - type: OpenAPI
    url: openapi/howler-top-up-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-top-up-cashless-tag-api
  name: Howler Top Up Cashless Tag API
  description: The Top Up Cashless Tag API from Howler — 7 operation(s) for top up cashless tag.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Top Up Cashless Tag
  properties:
  - type: OpenAPI
    url: openapi/howler-top-up-cashless-tag-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-top-up-ticket-api
  name: Howler Top Up Ticket API
  description: The Top Up Ticket API from Howler — 7 operation(s) for top up ticket.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Top Up Ticket
  properties:
  - type: OpenAPI
    url: openapi/howler-top-up-ticket-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-topupables-api
  name: Howler Topupables API
  description: The Topupables API from Howler — 1 operation(s) for topupables.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Topupables
  properties:
  - type: OpenAPI
    url: openapi/howler-topupables-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-transfer-ticket-api
  name: Howler Transfer Ticket API
  description: The Transfer Ticket API from Howler — 2 operation(s) for transfer ticket.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - Transfer Ticket
  properties:
  - type: OpenAPI
    url: openapi/howler-transfer-ticket-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
- aid: howler:howler-user-api
  name: Howler User API
  description: The User API from Howler — 4 operation(s) for user.
  humanURL: https://developer.howler.co.za/api-docs
  baseURL: https://www.howler.co.za/api/v3/consumer_portal
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/howler-user-api-openapi.yml
  - type: APIReference
    url: https://developer.howler.co.za/api-docs
  - type: Webhooks
    url: openapi/howler-webhooks-openapi.yml
common:
- type: Website
  url: https://www.howler.co.za/
- type: Documentation
  url: https://help.howler.co.za/
- type: APIReference
  url: https://developer.howler.co.za/api-docs
- type: Portal
  url: https://organisers.howler.co.za/
- type: Support
  url: https://www.howler.co.za/contact_us
- type: HelpCenter
  url: https://help.howler.co.za/
- type: SignUp
  url: https://www.howler.co.za/users/sign_up
- type: Login
  url: https://www.howler.co.za/users/sign_in
- type: TermsOfService
  url: https://www.howler.co.za/terms_and_conditions
- type: PrivacyPolicy
  url: https://www.howler.co.za/privacy_policy
- type: LinkedIn
  url: https://za.linkedin.com/company/howlertech
- type: Authentication
  url: authentication/howler-authentication.yml
- type: OAuthScopes
  url: scopes/howler-scopes.yml
- type: Conventions
  url: conventions/howler-conventions.yml
- type: ErrorCatalog
  url: errors/howler-problem-types.yml
- type: DataModel
  url: data-model/howler-data-model.yml
- type: Conformance
  url: conformance/howler-conformance.yml
- type: Lifecycle
  url: lifecycle/howler-lifecycle.yml
- type: Webhooks
  url: openapi/howler-webhooks-openapi.yml
- type: X-MCPServerCandidate
  url: mcp/howler-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: LLMsTxt
  url: llms/howler-llms.txt
- type: Overlay
  url: overlays/howler-consumer-portal-overlay.yaml
- type: WellKnown
  url: well-known/howler-well-known.yml
- type: AgentSkill
  url: skills/_index.yml
- type: AgenticAccess
  url: agentic-access/howler-agentic-access.yml
- type: DomainSecurity
  url: security/howler-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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