established · 0.5

Feature Flags

Score 26.1 / 100 47 providers 43 APIs Search apis.io →
Business capabilities this tag reaches
Software Release & Deployment Management 9
Variants seen in the corpus: Feature FlagsFeature flagsFeatureFlagsfeature-flags

Providers using this tag (47)

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

Exemplar 3 Complete, well-documented, and agent-ready
SwetrixAnalyticsCookieless TrackingGDPR CompliantOpen-Source2 APIs76.6OptimizelyA/B TestingContent ManagementCustomer DataE-Commerce37 APIs72.5LaunchDarklyFeature ManagementExperimentationObservability3 APIs71.0
Strong 10 Solid coverage with minor gaps
KindeAuthenticationAuthorizationCustomer IdentityIdentity Management2 APIs65.5CleverTapAudiencesCustomer EngagementCustomer RetentionMarketing Automation1 API65.1Heroic LabsGame BackendMultiplayerReal-TimeWebSocket4 APIs64.9FronteggAuthenticationAuthorizationIdentity ManagementCIAM10 APIs58.6DevCycleCompanyEnterprise SaasFeature Management2 APIs58.5AmplitudeA/B TestingAnalyticsExperimentation10 APIs58.0AtlassianCodeCollaborationPlatformProductivity123 APIs57.7HatchetTask QueueWorkflow EngineDurable ExecutionBackground Tasks1 API57.0TowerData InfrastructureData EngineeringPythonApache Iceberg1 API55.3Crusoeai-infrastructurecloud-computinggpu-computemachine-learning2 APIs54.5
Developing 19 Usable, with meaningful gaps to close
WunderGraphFederationGraphQLManagementSchema Registry11 APIs53.2Smart Pensionpensionsretirementworkplace-pensionauto-enrolment2 APIs52.7BucketCompanyFeature ManagementFeature Flagging1 API52.1The San Francisco Compute CompanyCompanyGPUComputeCloud Infrastructure1 API52.1AB TastyAggregationExperimentationPersonalization1 API51.7PostHogA/B TestingAnalyticsOpen-Source1 API50.8WorkOSAuthenticationIdentity ProviderSSOSAML1 API50.1HarnessDevOpsGitOpsInternal Developer PortalLifecycle17 APIs47.5Dream SportsCompanysports-technologyfantasy-sportsOpen-Source8 APIs46.3Google FirebaseAnalyticsAuthenticationBackend as a ServiceCloud Messaging2 APIs45.0UnityReal-Time 3DGame EngineGamingMultiplayer19 APIs45.0StiggFinOpsPricingBillingEntitlements2 APIs43.8NinetailedPersonalizationExperimentationA/B TestingAudience Segmentation1 API43.1KindeAuthenticationUser ManagementIdentityAuthorization1 API42.2SchematicBillingEntitlementsFeature Management2 APIs41.9UnleashFeature ManagementProgressive DeliveryA/B Testing2 APIs40.9SplitExperimentationFeature ManagementRollouts2 APIs40.4HypertuneExperimentationA/B TestingAnalytics1 API39.7CloudBeesCI/CDContinuous DeliveryContinuous IntegrationDevOps1 API39.6
Thin 14 Limited public surface area
GitLab CI/CDDevOpsCI/CDPipelinesGitLab1 API36.4ZocaCompanyArtificial IntelligenceMarketingBeauty and Wellness6 APIs36.4Saxo BankInvestment BankingTradingEquitiesForex17 APIs35.9Maia-analyticsCompanyDeveloper ToolsGeospatialGIS1 API34.1flagsmith1 API33.6CrusoeAI CloudGPUComputeInference1 API33.1ApptimizeCompanyA/B TestingFeature Management1 API33.0OpenFeatureCloud-NativeFeature ManagementIncubating1 API30.9Edge ImpulseArtificial IntelligenceEmbedded Machine LearningEdge AI1 API30.7GrowthBookExperimentationOpen-SourceAB Testing1 API29.6ReforgeCompanyFeature ManagementDynamic Configuration1 API28.0EppoExperimentationAB TestingAnalytics1 API27.6KameleoonExperimentationAB TestingPersonalization1 API27.3VWOExperimentationAB TestingPersonalizationConversion Optimization1 API27.2
Emerging 1 Early or largely undocumented
Software Development LifecycleDevelopment ProcessProject ManagementQuality AssuranceSoftware Engineering7 APIs25.0

APIs with this tag (38)

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 2 Complete, well-documented, and agent-ready
Swetrix Feature Flags APIFeature flag evaluation statistics76.6launchdarkly Feature Flags APICreate, update, and manage feature flags and their targeting rules across projects and environments.71.0
Strong 8 Solid coverage with minor gaps
Kinde Feature flags APIThe Feature flags API from Kinde — 3 operation(s) for feature flags.65.5CleverTap Remote Config APIManage feature flags and remote configuration variables delivered to mobile apps and websites.65.1Satori APIThe Satori API is Heroic Labs' LiveOps platform API enabling game developers to manage live operations incl...64.9Frontegg Feature Flags APIThe Feature Flags API from Frontegg — 2 operation(s) for feature flags.58.6Atlassian Jira Software Feature Flags APIThe Atlassian Jira Software Feature Flags API enables sending feature flag information to Jira Software for...57.7Hatchet Feature Flags APIThe Feature Flags API from Hatchet — 1 operation(s) for feature flags.57.0Tower Feature Flags APIThe Feature Flags API from Tower — 1 operation(s) for feature flags.55.3Crusoe Feature Flags APIThe Feature Flags API from Crusoe — 1 operation(s) for feature flags.54.5
Developing 19 Usable, with meaningful gaps to close
WunderGraph Feature Flags APIManage feature flags for gradual rollout of graph changes.53.2Smart Pension Feature Flags APIThe FeatureFlags API from Smart Pension — 1 operation(s) for featureflags.52.7The San Francisco Compute Company Feature Flags APIThe Feature Flags API from The San Francisco Compute Company — 2 operation(s) for feature flags.52.1PostHog Feature Flags APIThe PostHog Feature Flags API enables developers to create, manage, and evaluate feature flags programmatic...50.8PostHog feature_flags APIThe feature_flags API from PostHog — 19 operation(s) for feature_flags.50.8WorkOS feature-flags APIManage feature flags.50.1Harness Feature Management and Experimentation APIAPIs to create and manage feature flags, targets, target groups, and tags for feature release management, p...47.5Firebase Remote Config APIThe Firebase Remote Config API enables developers to change the behavior and appearance of their apps witho...45.0Unity Remote Config APIDynamic configuration delivery — feature flags, balance values, game settings — segmented by audiences and ...45.0Kinde Feature Flags APIThe Feature Flags API from Kinde — 2 operation(s) for feature flags.42.2Unleash Client APIAPI endpoint consumed by backend Unleash SDKs to fetch complete feature flag configurations including all a...40.9Split Admin APIThe Split Admin API is a REST API that enables programmatic management of workspaces (projects), environmen...40.4Split Feature Flags APICreate, retrieve, update, and delete feature flags (splits) within workspaces. Feature flags represent the ...40.4Split Java SDKThe Split Java SDK provides server-side feature flag evaluation for Java and JVM-based applications with lo...40.4Split JavaScript SDKThe Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based appl...40.4Split Node.js SDKThe Split Node.js SDK enables server-side feature flag evaluation for Node.js applications with local evalu...40.4Split Python SDKThe Split Python SDK enables server-side feature flag evaluation for Python applications, suitable for Djan...40.4Split React SDKThe Split React SDK provides React-specific components and hooks for integrating feature flags including a ...40.4CloudBees Feature Management REST APIThe CloudBees Feature Management REST API (formerly Rollout) provides programmatic access to applications, ...39.6
Thin 8 Limited public surface area
GitLab CI/CD feature_flags APIOperations related to feature flags36.4Saxo Bank Feature Flags APIProvide feature flags related endpoints.35.9Maia-analytics feature-flags APIThe feature-flags API from Maia-analytics — 3 operation(s) for feature-flags.34.1Flagsmith Flags APIThe Flagsmith Flags API is the public-facing REST API that client-side and server-side SDKs use to retrieve...33.6Crusoe Feature Flags APIThe Feature Flags API from Crusoe — 1 operation(s) for feature flags.33.1Edge Impulse FeatureFlags APIThe FeatureFlags API from Edge Impulse — 1 operation(s) for featureflags.30.7Eppo Cloud REST APIEppo Cloud REST API provides programmatic access to feature flags, experiments, allocations, metrics, and a...27.6VWO Feature Flags APIFeature management (FME) feature flags and rules.27.2
Emerging 1 Early or largely undocumented
Deployment and Release APIsAPIs for CI/CD pipelines, infrastructure provisioning, environment management, feature flags, and progressi...25.0

Score breakdown

Frequency
52.8
log-scaled weighted occurrences
Breadth
1.3
spread across providers
Quality lift
54.9
mean composite of providers using it
Cohesion
10.4
strength of nearest seed neighbor

Related tags

Experimentation 17 co-occurrences Feature Management 10 co-occurrences A/B Testing 14 co-occurrences Experiments 9 co-occurrences Environments 14 co-occurrences Features 8 co-occurrences Flags 5 co-occurrences Identities 6 co-occurrences

Where this tag comes from

Provider tag22
Api tag42
Openapi tag17
Openapi op tag49

Cohort brief

Auto-generated

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

Providers
47
all scored
Mean Kin Score
45.4
+24.7 vs catalog 20.7
Mean Agent Readiness
29.5
+19.8 vs catalog 9.7
Spread
25–78.6
median 44.3 · σ 13.5
How the 47 split by band
Exemplar 4Strong 10Developing 14Thin 18Emerging 1Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 56.6 17.5 +39.1 47
Developer Ergonomics 44 17.9 +26.1 47
Operational Transparency 32.2 11.3 +20.9 47
Access Clarity 42.8 22.3 +20.5 47
Contract Governance 20.1 6.4 +13.7 47
Discoverability 71.9 60.4 +11.5 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) 43% 16% +27
MCP server (first-party) 21% 7% +14
Agent Skills 0% 0% 0
OAuth scopes 19% 9% +10
Security 100% 88% +12
Arazzo workflows 9% 2% +7
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 Swetrix 78.6
  2. 2 Optimizely 75.1
  3. 3 Heroic Labs 70.4
  4. 4 CleverTap 68.2
  5. 5 Frontegg 63.3
  6. 6 Kinde 62.9
  7. 7 DevCycle 61.6
  8. 8 Crusoe 60.6
  9. 9 Amplitude 57.1
  10. 10 Smart Pension 56.5
Top by Agent Readiness
  1. 1 DevCycle 55.3
  2. 2 The San Francisco Compute Company 53.4
  3. 3 CleverTap 47.5
  4. 4 Bucket 45.1
  5. 5 Stigg 42.4
  6. 6 Atlassian 41.9
  7. 7 Tower 41.6
  8. 8 Dream Sports 41
  9. 9 Crusoe 40.3
  10. 10 Optimizely 39.4
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/feature-flags"
All tags 
curl "https://apis.io/api/v1/tags?limit=25"
As a scored cohort 
curl "https://apis.io/api/v1/cohorts/tag/feature-flags"
The distribution (Pro) 
curl "https://apis.io/api/v1/cohorts/tag/feature-flags/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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