Apptimize

Apptimize is a mobile-first A/B testing, multivariate testing, and feature management platform for optimizing user experiences across iOS, Android, web, and server-side channels. Product teams use Apptimize to run experiments, ship feature flags with controlled rollouts, deliver instant updates without app-store releases, and set dynamic variables that can be changed on the fly. Apptimize ships client and server SDKs for iOS/tvOS/watchOS, Android, Web, React Native, Python, Flutter, and Roku, plus a REST API for retrieving variant assignments and tracking events from any device or backend. Apptimize was acquired by Airship in 2019; its developer documentation and SDKs remain published at apptimize.com/docs, and the marketing site now redirects to airship.com.

Apptimize publishes 2 APIs on the APIs.io network: Events API and Experiments API. Tagged areas include Company, A/B Testing, Feature Flags, Feature Management, and Experimentation.

Apptimize’s developer surface includes documentation, API reference, support, authentication, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub

30.8/100 thin ▬ flat Agent 17/100 agent aware Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs

Company A/B Testing Feature Flags Feature Management Experimentation Mobile SDK Optimization

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 30.8/100 · thin

Contract Quality 9.8 / 19

Developer Ergonomics 7.8 / 15

Access Clarity 0.0 / 15

Operational Transparency 0.0 / 10

Contract Governance 0.4 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 17/100 · agent aware

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 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

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

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/.

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/apptimize: 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 2

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

Apptimize Events API

Track user events used as experiment and feature-flag goals.

Apptimize Experiments API

Retrieve variant assignments and experiment data for a user.

Open Collections 3

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

API Collection

OPEN COLLECTION

Apptimize REST Events API

OPEN COLLECTION

Apptimize REST Events Experiments API

OPEN COLLECTION

Security Posture 2

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

Apptimize Authentication

apiKey · 1 scheme

SECURITY

Apptimize Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Overlay

Overlay

Source (apis.yml)

aid: apptimize
name: Apptimize
description: Apptimize is a mobile-first A/B testing, multivariate testing, and feature management platform for optimizing
  user experiences across iOS, Android, web, and server-side channels. Product teams use Apptimize to run experiments, ship
  feature flags with controlled rollouts, deliver instant updates without app-store releases, and set dynamic variables that
  can be changed on the fly. Apptimize ships client and server SDKs for iOS/tvOS/watchOS, Android, Web, React Native, Python,
  Flutter, and Roku, plus a REST API for retrieving variant assignments and tracking events from any device or backend. Apptimize
  was acquired by Airship in 2019; its developer documentation and SDKs remain published at apptimize.com/docs, and the marketing
  site now redirects to airship.com.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  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
  - url: http://apptimize.com
    status: 301
    note: declared website redirects to https://www.airship.com/?utm_source=apptimize — a different registrable domain (apptimize.com
      -> airship.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://apptimize.com/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/apptimize/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- gv
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- A/B Testing
- Feature Flags
- Feature Management
- Experimentation
- Mobile
- SDK
- Optimization
apis:
- aid: apptimize:apptimize-events-api
  name: Apptimize Events API
  description: Track user events used as experiment and feature-flag goals.
  humanURL: https://apptimize.com/docs/apis/rest-api.html
  baseURL: https://api.apptimize.com
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/apptimize-events-api-openapi.yml
  - type: APIReference
    url: https://apptimize.com/docs/apis/rest-api.html
- aid: apptimize:apptimize-experiments-api
  name: Apptimize Experiments API
  description: Retrieve variant assignments and experiment data for a user.
  humanURL: https://apptimize.com/docs/apis/rest-api.html
  baseURL: https://api.apptimize.com
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/apptimize-experiments-api-openapi.yml
  - type: APIReference
    url: https://apptimize.com/docs/apis/rest-api.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ParentCompany
  url: https://apis.io/providers/airship/
  name: Airship
  x-relationship: acquired
  x-evidence: Apptimize was acquired by Airship in 2019; its developer documentation and SDKs remain published at apptimize.
- type: Overlay
  url: overlays/apptimize-rest-api-overlay.yaml
- type: Website
  url: http://apptimize.com
- type: DeveloperPortal
  url: https://apptimize.com/docs/
- type: Documentation
  url: https://apptimize.com/docs/
- type: APIReference
  url: https://apptimize.com/docs/apis/rest-api.html
- type: Support
  url: mailto:support@apptimize.com
- type: Packages
  url: packages/apptimize-packages.yml
- type: SDKs
  url: packages/apptimize-packages.yml
- type: Authentication
  url: authentication/apptimize-authentication.yml
- type: Conventions
  url: conventions/apptimize-conventions.yml
- type: ErrorCatalog
  url: errors/apptimize-problem-types.yml
- type: Lifecycle
  url: lifecycle/apptimize-lifecycle.yml
- type: X-MCPServerCandidate
  url: mcp/apptimize-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/apptimize-llms.txt
- type: Conformance
  url: conformance/apptimize-conformance.yml
- type: DataModel
  url: data-model/apptimize-data-model.yml
- type: DomainSecurity
  url: security/apptimize-domain-security.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

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