emerging · 0.0 capabilitymarket resourcedomain

A/B Testing

Score 21.6 / 100 35 providers +4 via APIs 9 APIs Search apis.io →

Providers using this tag (35)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 4 Complete, well-documented, and agent-ready
OptimizelyContent ManagementCustomer DataE-Commerce37 APIs78.0FlagsmithFeature FlagsRemote ConfigRelease Management2 APIs77.9StatsigFeature FlagsExperimentationProduct Analytics4 APIs76.9Zoho CampaignsEmail MarketingCampaignsMailing ListsSubscribers2 APIs68.9
Strong 4 Solid coverage with minor gaps
UnbounceLanding PagesConversion Rate OptimizationMarketing1 API65.4LeanplumMobile MarketingCustomer EngagementPush NotificationsMessaging2 APIs59.8IntelligemsCompanyE-CommercePricing1 API59.3AmplitudeAnalyticsExperimentationFeature Flags10 APIs56.4
Developing 10 Usable, with meaningful gaps to close
LeadpagesCompanyLanding PagesMarketingConversion Optimization3 APIs53.3MonetateCompanyPersonalizationExperience Optimization6 APIs52.8UniformCompanyDigital Experience PlatformContent ManagementPersonalization1 API52.3PostHogAnalyticsFeature FlagsOpen-Source1 API51.1AB TastyAggregationExperimentationFeature FlagsPersonalization1 API50.3Builder.ioHeadless CMSVisual DevelopmentContent Delivery6 APIs48.4RevnuCompanyGrowth AutomationMarketingArtificial Intelligence2 APIs48.2NinetailedPersonalizationExperimentationAudience Segmentation1 API44.6UnleashFeature FlagsFeature ManagementProgressive Delivery2 APIs43.6InstapageLanding PagesConversion OptimizationMarketing11 APIs42.0
Thin 12 Limited public surface area
SeldonMLOpsMachine-LearningModel ServingInference3 APIs38.5HypertuneFeature FlagsExperimentationAnalytics1 API38.3FibrCompanyConversion Rate OptimizationPersonalizationLanding Pages34.5GrowthBookFeature FlagsExperimentationOpen-Source1 API33.9ApptimizeCompanyFeature FlagsFeature Management1 API32.3GamebeastCompanyAnalyticsGamingGame Development1 API29.7PackdigitalCompanyContent ManagementHeadless CommerceShopify1 API29.3ConvertExperimentationConversion OptimizationPersonalization1 API28.5EppoExperimentationFeature FlagsAnalytics1 API26.9EvolvExperimentationOptimizationPersonalization1 API26.7KameleoonExperimentationPersonalizationFeature Flags1 API26.5VWOExperimentationPersonalizationConversion Optimization1 API26.5
Emerging 3 Early or largely undocumented
Dynamic YieldCompanyCloudPersonalizationExperience Optimization1 API25.9Google OptimizeAnalyticsDeprecatedExperimentation1 API19.9Yieldify *CompanyEnterprisePersonalizationConversion Rate Optimization14.1
Minimal 2 Almost no public developer surface
IntellimizeCompanyAi MlWebsite OptimizationPersonalization5.0StoremavenCompanyApp Store OptimizationASOMobile Marketing5.0

APIs with this tag (9)

Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 4 Complete, well-documented, and agent-ready
Harness Feature Management and Experimentation APIAPIs to create and manage feature flags, targets, target groups, and tags for feature release management, p...86.2Algolia Ab Testing APIThe Ab Testing API from Algolia — 6 operation(s) for ab testing.71.5Zoho Campaigns APIREST API for managing email campaigns, mailing lists, subscribers, templates, and analytics in Zoho Campaig...68.9Satori APIThe Satori API is Heroic Labs' LiveOps platform API enabling game developers to manage live operations incl...67.5
Strong 1 Solid coverage with minor gaps
Matomo Ab Testing APIExposes the AbTesting API for managing experiments, embedding experiment scripts, and reading experiment re...65.8
Developing 2 Usable, with meaningful gaps to close
PostHog Experiments APIThe PostHog Experiments API provides programmatic management of A/B tests and experiments. It supports crea...51.1PostHog Feature Flags APIThe PostHog Feature Flags API enables developers to create, manage, and evaluate feature flags programmatic...51.1
Thin 1 Limited public surface area
Convert Experiences REST API v2Convert Experiences REST API v2 manages accounts, projects, experiments, goals, audiences, locations, repor...28.5
Emerging 1 Early or largely undocumented
Google Optimize API (Sunset)API for managing Google Optimize experiments, variants, and accessing optimization data. Sunset on Septembe...19.9

Companies reaching this through an API (4)

These companies publish an API, specification or operation carrying “A/B Testing” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Algolia Harness Heroic Labs Matomo

Score breakdown

Frequency
47.0
log-scaled weighted occurrences
Breadth
1.0
spread across providers
Quality lift
47.8
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Related tags

Experimentation 20 co-occurrences Feature Flags 16 co-occurrences Experiments 13 co-occurrences Conversion Rate Optimization 6 co-occurrences Conversion Optimization 5 co-occurrences Personalization 16 co-occurrences Features 5 co-occurrences Segments 5 co-occurrences

Where this tag comes from

Provider tag35
Api tag9
Openapi tag2
Openapi op tag28

Cohort brief

Auto-generated

The 34 providers in the APIs.io catalog tagged A/B Testing, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
34
all scored
Mean Kin Score
43.1
+19.1 vs catalog 24
Mean Agent Readiness
31.5
+19.1 vs catalog 12.4
Spread
5–78
median 42.8 · σ 18
How the 34 split by band
Exemplar 4Strong 4Developing 10Thin 12Emerging 3Minimal 1
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 44 20.1 +23.9 34
Developer Ergonomics 46 23.4 +22.6 34
Access Clarity 46.6 26.5 +20.1 34
Operational Transparency 32.2 14 +18.2 34
Discoverability 70.4 61 +9.4 34
Contract Governance 14.4 6.5 +7.9 34

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes
ArtifactThis cohortCatalogDifference
MCP server (any) 32% 10% +22
MCP server (first-party) 47% 13% +34
Agent Skills 0% 0% 0
OAuth scopes 24% 11% +13
Security 100% 96% +4
Arazzo workflows 3% 2% +1
Governance rules 32% 13% +19

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score
  1. 1 Optimizely 78
  2. 2 Flagsmith 77.9
  3. 3 Statsig 76.9
  4. 4 Zoho Campaigns 68.9
  5. 5 Unbounce 65.4
  6. 6 Leanplum 59.8
  7. 7 Intelligems 59.3
  8. 8 Amplitude 56.4
  9. 9 Leadpages 53.3
  10. 10 Monetate 52.8
Top by Agent Readiness
  1. 1 Unbounce 65.6
  2. 2 Builder.io 64.2
  3. 3 Optimizely 62.5
  4. 4 PostHog 55.7
  5. 5 Intelligems 55.2
  6. 6 Amplitude 54.3
  7. 7 Statsig 52.4
  8. 8 Monetate 52
  9. 9 Leadpages 50.6
  10. 10 GrowthBook 48.8
All 35 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 20 September 2026, across 27620 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for tags

7 MCP tools reach this
  • find_tagsBrowse and filter every tag in the catalog.
  • get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
  • cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
  • cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This tag 
curl "https://apis.io/api/v1/tags/a-b-testing"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/a-b-testing"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/a-b-testing/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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