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

32.3/100 thin ▬ flat Agent 19/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

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

Kin Score

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

Composite quality — 32.3/100 · thin

Contract Quality 13.1 / 23

Developer Ergonomics 9.3 / 18

Access Clarity 0.0 / 18

Operational Transparency 0.0 / 12

Contract Governance 0.5 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · 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

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.

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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