established · 1.0

Experiments

Score 24.7 / 100 47 providers 49 APIs Search apis.io →
Variants seen in the corpus: Experimentsexperiments

Providers using this tag (47)

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

Exemplar 5 Complete, well-documented, and agent-ready
OptimizelyA/B TestingContent ManagementCustomer DataE-Commerce50 APIs75.1IterableCross-Channel MessagingCustomer EngagementEmailMarketing Automation23 APIs73.9Talon.OnePromotionsLoyaltyCouponsIncentives5 APIs72.6Heroic LabsGame BackendMultiplayerReal-TimeWebSocket4 APIs70.4MatomoAnalyticsWeb AnalyticsOpen-SourcePrivacy61 APIs67.3
Strong 6 Solid coverage with minor gaps
Google Quantum AIQuantum ComputingQuantumHardwareNISQ15 APIs59.3DatabricksArtificial IntelligenceAnalyticsApache SparkBig Data57 APIs59.1AmplitudeA/B TestingAnalyticsExperimentationFeature Flags33 APIs57.1AutomatticCompanyContent ManagementPublishingBlogging9 APIs56.8Azure DatabricksAnalyticsApache SparkBig DataData Engineering39 APIs56.5JFrogArtifactoryCI/CDContainer RegistryDevOps53 APIs55.1
Developing 11 Usable, with meaningful gaps to close
PostHogA/B TestingAnalyticsFeature FlagsOpen-Source139 APIs49.3CometCompanyAi Enterprise SoftwareLLM ObservabilityLLMOps42 APIs49.0OpikLLMEvaluationObservabilityTracing39 APIs48.2InstapageLanding PagesConversion OptimizationMarketingA/B Testing12 APIs46.4CenevoCompanyLab AutomationLaboratory InformaticsElectronic Lab Notebook75 APIs45.8Amazon Fault Injection SimulatorChaos EngineeringDevOpsFault InjectionResilience Testing6 APIs43.2Keywords AIArtificial IntelligenceLLMObservabilityGateway9 APIs42.4BraintrustArtificial IntelligenceLLMEvaluationObservability12 APIs42.2BraintrustArtificial IntelligenceLLMObservabilityEvaluation29 APIs40.1Arize PhoenixLLM ObservabilityAI EvaluationOpenTelemetryTracing17 APIs39.8GalileoAI EvaluationAI ObservabilityGenAIGuardrails8 APIs39.8
Thin 21 Limited public surface area
SeldonMLOpsMachine-LearningModel ServingInference31 APIs38.6Chaos MeshChaos EngineeringCloud-NativeCNCFFault Injection7 APIs38.5LangChainAgentsArtificial IntelligenceLarge Language ModelsLLM Observability66 APIs37.6LabguruElectronic Lab NotebookELNLIMSLaboratory Information Management69 APIs37.5AppLovinAdvertisingMobileAdTechApp Monetization11 APIs37.4statsig18 APIs36.0ApptimizeCompanyA/B TestingFeature FlagsFeature Management2 APIs34.5Hamming AIArtificial IntelligenceVoice AgentsLLMTesting6 APIs34.2Kubeflow PipelinesData ScienceKubernetesMachine-LearningMLOps8 APIs34.1ClearMLMLMLOpsOpen-SourceExperiment Tracking9 APIs33.6KubeflowArtificial IntelligenceDeep LearningKubernetesMachine-Learning8 APIs32.9Al-Farabi Kazakh National UniversityEducationHigher EducationUniversityResearch47 APIs32.2MLflowMLMLOpsGenAIExperiment Tracking8 APIs31.6LangSmithArtificial IntelligenceLLMObservabilityEvaluations73 APIs31.0launchdarkly27 APIs30.9Weights & BiasesMLMLOpsExperiment TrackingModel Registry11 APIs30.8GamebeastCompanyAnalyticsGamingGame Development1 API30.7GrowthBookFeature FlagsExperimentationOpen-SourceA/B Testing36 APIs30.2EppoExperimentationFeature FlagsA/B TestingAnalytics6 APIs28.1GentraceCompanyArtificial IntelligenceLLMEvaluation4 APIs28.0KameleoonExperimentationA/B TestingPersonalizationFeature Flags6 APIs27.1
Emerging 4 Early or largely undocumented
Determined AIArtificial IntelligenceDeep LearningMachine-LearningMLOps8 APIs24.8CometMLMLOpsGenAIExperiment Tracking2 APIs20.1Amazon Web ServicesAmazonCloudNetworkIndex1804 APIs16.7EvalsEvalsLLM EvaluationAI QualityBenchmarks20 APIs15.8

APIs with this tag (49)

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 5 Complete, well-documented, and agent-ready
Optimizely Experiments APICreate and manage A/B test experiments on top of feature flags.75.1Iterable Experiments APIRetrieve experiment configurations and metrics for A/B tests running across campaigns.73.9Talon.One Management APIBack-office Management API that programmatically does what the Campaign Manager UI does: applications, camp...72.6Satori APIThe Satori API is Heroic Labs' LiveOps platform API enabling game developers to manage live operations incl...70.4Matomo AbTesting APIThe Matomo AbTesting API exposes 17 operations of the Matomo Reporting API (module `AbTesting`). A/B test e...67.3
Strong 6 Solid coverage with minor gaps
ReCirqReCirq is a research-grade collection of reproducible Cirq experiments and applications published by Google...59.3Databricks Experiments APIThe Databricks Experiments API allows you to create, update, list, and manage MLflow experiments. Experimen...59.1Amplitude Experiments APIExperiment management operations57.1WordPress.com REST API - wpcom/v2 namespaceThe WordPress.com and Jetpack platform extension namespace — 1,716 operations covering hosting and code dep...56.8MLflow APITrack experiments, log metrics, and manage ML models using the MLflow tracking and registry APIs.56.5JFrog Experiments APIML experiment tracking55.1
Developing 12 Usable, with meaningful gaps to close
PostHog experiments APIThe experiments API from PostHog — 18 operation(s) for experiments.49.3Comet Experiments APIExperiment resources49.0Opik Experiments APIExperiment resources48.2Instapage Experiments APIList the Manual and AI experiments running against Instapage landing pages, with their DRAFT / RUNNING / EN...46.4Cenevo Experiments APIThe Experiments API from Cenevo — 6 operation(s) for experiments.45.8Amazon Fault Injection Simulator Experiments APIStart, stop, and monitor fault injection experiments43.2Keywords AI Experiments APIPrompt / model experiments.42.4Braintrust Experiments APIThe Experiments API from Braintrust — 6 operation(s) for experiments.42.2Braintrust APIThe Braintrust REST API provides programmatic access to projects, experiments, datasets, prompts, functions...40.1Braintrust Experiments APIThe Experiments API from Braintrust — 6 operation(s) for experiments.40.1Arize Phoenix experiments APIThe experiments API from Arize Phoenix — 8 operation(s) for experiments.39.8Galileo Experiments APIThe Experiments API from Galileo — 3 operation(s) for experiments.39.8
Thin 22 Limited public surface area
Seldon Experiments APISeldon Core Experiment APIs for Seldon Deploy38.6Chaos Mesh Experiments APICreate, manage, pause, and delete chaos experiments38.5LangChain experiments APIThe experiments API from LangChain — 1 operation(s) for experiments.37.6Labguru Experiments APIThe Experiments API from Labguru — 6 operation(s) for experiments.37.5AppLovin Experiments APIAd unit A/B experiment management37.4statsig Experiments APIManage A/B test experiments including creation, configuration, starting, resetting, and analysis.36.0Apptimize Experiments APIRetrieve variant assignments and experiment data for a user.34.5Hamming AI Experiments APICreate and run experiments and experiment items.34.2Kubeflow Pipelines Experiments APIGroup runs and recurring jobs into experiments34.1ClearML REST APIThe ClearML REST API is organized into services: auth (login/credentials), projects, tasks (experiments), w...33.6Kubeflow Experiments APIGroup runs and recurring jobs into logical experiments32.9Al-Farabi Kazakh National University experiments APIThe experiments API from Al-Farabi Kazakh National University — 6 operation(s) for experiments.32.2MLflow Experiments APIManage MLflow experiments.31.6MLflow REST APIThe MLflow tracking server exposes a REST API for experiments, runs, parameters, metrics, tags, registered ...31.6LangSmith experiments APIThe experiments API from LangSmith — 1 operation(s) for experiments.31.0launchdarkly Experiments APICreate and manage experiments to measure the impact of feature flag variations on metrics.30.9W&B GraphQL APIThe W&B Public API is a GraphQL endpoint at `https://api.wandb.ai/graphql`. It backs the Python `wandb.Api(...30.8Gamebeast SDK ServicesThe Gamebeast platform surface consumed through the engine SDKs (Roblox/Luau, Unity/C#) and a JS/TS backend...30.7GrowthBook experiments APIExperiments (A/B Tests)30.2Eppo Experiments APIThe Experiments API from Eppo — 2 operation(s) for experiments.28.1Gentrace Experiments APIThe Experiments API from Gentrace — 2 operation(s) for experiments.28.0Kameleoon Experiments APIManage Kameleoon experiments.27.1
Emerging 4 Early or largely undocumented
Determined AI Experiments APIManage experiments24.8Comet REST APIThe Comet REST API exposes read endpoints (workspace, project, experiment data), write endpoints (data subm...20.1Amazon Web Services Experiments APIThe Experiments API from Amazon Web Services — 5 operation(s) for experiments.16.7BraintrustBraintrust is a commercial evaluation platform that captures eval runs as immutable, comparable experiment ...15.8

Score breakdown

Frequency
57.2
log-scaled weighted occurrences
Breadth
1.3
spread across providers
Quality lift
50.5
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Related tags

A/B Testing 12 co-occurrences Prompts 11 co-occurrences Experiment Tracking 6 co-occurrences Experimentation 8 co-occurrences Feature Flags 9 co-occurrences Evaluation 9 co-occurrences Model Registry 5 co-occurrences MLOps 11 co-occurrences

Where this tag comes from

Api tag46
Provider tag4
Openapi tag34
Openapi op tag184

Cohort brief

Auto-generated

The 47 providers in the APIs.io catalog tagged Experiments, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
47
all scored
Mean Kin Score
41.8
+21.1 vs catalog 20.7
Mean Agent Readiness
26.2
+16.5 vs catalog 9.7
Spread
15.8–75.1
median 38.5 · σ 14.7
How the 47 split by band
Exemplar 5Strong 6Developing 11Thin 21Emerging 4Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 51.4 17.5 +33.9 47
Developer Ergonomics 40.4 17.9 +22.5 47
Operational Transparency 32.5 11.3 +21.2 47
Access Clarity 37.6 22.3 +15.3 47
Discoverability 70.9 60.4 +10.5 47
Contract Governance 16 6.4 +9.6 47

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) 34% 16% +18
MCP server (first-party) 13% 7% +6
Agent Skills 0% 0% 0
OAuth scopes 15% 9% +6
Security 98% 88% +10
Arazzo workflows 11% 2% +9
Governance rules 51% 13% +38

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 75.1
  2. 2 Iterable 73.9
  3. 3 Talon.One 72.6
  4. 4 Heroic Labs 70.4
  5. 5 Matomo 67.3
  6. 6 Google Quantum AI 59.3
  7. 7 Databricks 59.1
  8. 8 Amplitude 57.1
  9. 9 Automattic 56.8
  10. 10 Azure Databricks 56.5
Top by Agent Readiness
  1. 1 Automattic 62.3
  2. 2 Talon.One 45.2
  3. 3 Databricks 40.1
  4. 4 Optimizely 39.4
  5. 5 Matomo 37.8
  6. 6 AppLovin 36.5
  7. 7 JFrog 35.4
  8. 8 Iterable 33.7
  9. 9 PostHog 33.5
  10. 10 Amplitude 32.9
All 47 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 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

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

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