established · 0.0 capability resource

Feature Flags

Score 25.7 / 100 26 providers +27 via APIs 48 APIs Search apis.io →
Business capabilities this tag reaches
Software Release & Deployment Management 1

Providers using this tag (26)

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

Exemplar 6 Complete, well-documented, and agent-ready
KindeAuthenticationAuthorizationCustomer IdentityIdentity Management2 APIs86.1OptimizelyA/B TestingContent ManagementCustomer DataE-Commerce37 APIs78.0FlagsmithRemote ConfigRelease ManagementA/B Testing2 APIs77.9LaunchDarklyFeature ManagementExperimentationObservability3 APIs77.9StatsigExperimentationA/B TestingProduct Analytics4 APIs76.9CloudBeesCI/CDContinuous DeliveryContinuous IntegrationDeveloper Tools5 APIs68.3
Strong 2 Solid coverage with minor gaps
DevCycleCompanyEnterprise SaasFeature Management2 APIs58.5AmplitudeA/B TestingAnalyticsExperimentation10 APIs56.4
Developing 9 Usable, with meaningful gaps to close
BucketCompanyFeature ManagementFeature Flagging1 API52.5FeatureflipFeature Managementfeature flag cleanupProgressive Delivery4 APIs52.3PostHogA/B TestingAnalyticsOpen-Source1 API51.1AB TastyAggregationExperimentationPersonalization1 API50.3Dream SportsCompanySports TechnologyFantasy SportsOpen-Source8 APIs47.6SchematicBillingEntitlementsFeature Management2 APIs47.1NinetailedPersonalizationExperimentationA/B TestingAudience Segmentation1 API44.6UnleashFeature ManagementProgressive DeliveryA/B Testing2 APIs43.6StiggFinOpsPricingBillingEntitlements2 APIs43.1
Thin 9 Limited public surface area
SplitExperimentationFeature ManagementRollouts2 APIs39.0HypertuneExperimentationA/B TestingAnalytics1 API38.3GrowthBookExperimentationOpen-SourceA/B Testing1 API33.9ApptimizeCompanyA/B TestingFeature Management1 API32.3OpenFeatureCloud-NativeFeature ManagementIncubating1 API30.2ReforgeCompanyFeature ManagementDynamic Configuration1 API29.0EppoExperimentationA/B TestingAnalytics1 API26.9KameleoonExperimentationA/B TestingPersonalization1 API26.5VWOExperimentationA/B TestingPersonalizationConversion Optimization1 API26.5

APIs with this tag (48)

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 14 Complete, well-documented, and agent-ready
Harness Feature Flags APIAPIs to create and manage Feature Flags86.2Harness Feature Management and Experimentation APIAPIs to create and manage feature flags, targets, target groups, and tags for feature release management, p...86.2Kinde Feature flags APIThe Feature flags API from Kinde — 3 operation(s) for feature flags.86.1Flagsmith Flags APIThe Flagsmith Flags API is the public-facing REST API that client-side and server-side SDKs use to retrieve...77.9launchdarkly Feature Flags APICreate, update, and manage feature flags and their targeting rules across projects and environments.77.9LaunchDarkly MCP ServerLaunchDarkly operates a first-party hosted Model Context Protocol server at https://mcp.launchdarkly.com/mc...77.9statsig Console APIThe Statsig Console API is the provider's own published contract — the CRUD API for everything available in...76.9Swetrix Feature Flags APIFeature flag evaluation statistics75.9Jira Feature Flags APIAPIs related to integrating feature flags with Jira Software. These APIs are available to Atlassian Connect...72.6Canvas Feature Flags APIThe Feature Flags API from Canvas — 10 operation(s) for feature flags.71.5CloudBees Feature Management REST APIThe CloudBees Feature Management REST API (formerly Rollout) provides programmatic access to applications, ...68.3Satori APIThe Satori API is Heroic Labs' LiveOps platform API enabling game developers to manage live operations incl...67.5Edge Impulse Feature Flags APIThe Feature Flags API from Edge Impulse — 1 operation(s) for feature flags.67.4Frontegg Feature Flags APIThe Feature Flags API from Frontegg — 2 operation(s) for feature flags.67.3
Strong 8 Solid coverage with minor gaps
Atlassian Jira Software Feature Flags APIThe Atlassian Jira Software Feature Flags API enables sending feature flag information to Jira Software for...65.6CleverTap Remote Config APIManage feature flags and remote configuration variables delivered to mobile apps and websites.64.1Red Hat Ansible Automation Platform Feature Flags APIThe feature_flags API from Red Hat Ansible Automation Platform — 8 operation(s) for feature_flags.63.0Medusa Feature Flags APIFeature flags are used to enable or disable certain features in your Medusa application. These API routes a...62.7Smart Pension Feature Flags APIThe Feature Flags API from Smart Pension — 1 operation(s) for feature flags.57.3Cloud Foundry Feature Flags APIFeature flags are runtime flags that enable or disable functionality on the API.56.2Hatchet Feature Flags APIThe Feature Flags API from Hatchet — 1 operation(s) for feature flags.55.8Tower Feature Flags APIThe Feature Flags API from Tower — 1 operation(s) for feature flags.54.3
Developing 13 Usable, with meaningful gaps to close
Crusoe Feature Flags APIThe Feature Flags API from Crusoe — 1 operation(s) for feature flags.53.6WorkOS feature-flags APIManage feature flags.52.6Featureflip Feature Flags APIFeature flags within a resolved organization + project — mirrors EnvironmentsController's resolve-then-disp...52.3MCP Server (local)Documentation for the @featureflip/mcp server, a local stdio process run via npx that calls the Management ...52.3WunderGraph Feature Flags APIManage feature flags for gradual rollout of graph changes.51.6The San Francisco Compute Company Feature Flags APIThe Feature Flags API from The San Francisco Compute Company — 2 operation(s) for feature flags.51.4PostHog Feature Flags APIThe PostHog Feature Flags API enables developers to create, manage, and evaluate feature flags programmatic...51.1PostHog feature_flags APIThe feature_flags API from PostHog — 19 operation(s) for feature_flags.51.1Validere feature_flags APIFeature Flags46.4Firebase Remote Config APIThe Firebase Remote Config API enables developers to change the behavior and appearance of their apps witho...43.6Unleash Client APIAPI endpoint consumed by backend Unleash SDKs to fetch complete feature flag configurations including all a...43.6Zoca Feature Flags APIThe Feature Flags API from Zoca — 3 operation(s) for feature flags.42.8Forta Health Feature Flags APIThe feature_flags API from Forta Health — 2 operation(s) for feature_flags.39.6
Thin 12 Limited public surface area
Split Admin APIThe Split Admin API is a REST API that enables programmatic management of workspaces (projects), environmen...39.0Split Feature Flags APICreate, retrieve, update, and delete feature flags (splits) within workspaces. Feature flags represent the ...39.0Split Java SDKThe Split Java SDK provides server-side feature flag evaluation for Java and JVM-based applications with lo...39.0Split JavaScript SDKThe Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based appl...39.0Split Node.js SDKThe Split Node.js SDK enables server-side feature flag evaluation for Node.js applications with local evalu...39.0Split Python SDKThe Split Python SDK enables server-side feature flag evaluation for Python applications, suitable for Djan...39.0Split React SDKThe Split React SDK provides React-specific components and hooks for integrating feature flags including a ...39.0GitLab CI/CD feature_flags APIOperations related to feature flags38.8Saxo Bank Feature Flags APIProvide feature flags related endpoints.35.4Maia-analytics feature-flags APIThe feature-flags API from Maia-analytics — 3 operation(s) for feature-flags.32.0Eppo Cloud REST APIEppo Cloud REST API provides programmatic access to feature flags, experiments, allocations, metrics, and a...26.9VWO Feature Flags APIFeature management (FME) feature flags and rules.26.5
Emerging 1 Early or largely undocumented
Deployment and Release APIsAPIs for CI/CD pipelines, infrastructure provisioning, environment management, feature flags, and progressi...25.0

Companies reaching this through an API (27)

These companies publish an API, specification or operation carrying “Feature Flags” 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.

Atlassian Canvas CleverTap Cloud Foundry Crusoe Edge Impulse Forta Health Frontegg GitLab CI/CD Google Firebase Harness Hatchet Heroic Labs Jira Maia-analytics Medusa Red Hat Ansible Automation Platform Saxo Bank Smart Pension Software Development Lifecycle Swetrix The San Francisco Compute Company Tower Validere WorkOS WunderGraph Zoca

Score breakdown

Frequency
56.6
log-scaled weighted occurrences
Breadth
0.7
spread across providers
Quality lift
56.8
mean composite of providers using it
Cohesion
0.0
strength of nearest seed neighbor

Where this tag sits

Feature Management 11 providers

Related tags

Experimentation 21 co-occurrences Feature Management 12 co-occurrences A/B Testing 16 co-occurrences Experiments 11 co-occurrences Features 9 co-occurrences Environment 14 co-occurrences Releases 6 co-occurrences

Where this tag comes from

Provider tag26
Api tag48
Openapi tag27
Openapi op tag123

Cohort brief

Auto-generated

The 26 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
26
all scored
Mean Kin Score
49.8
+25.8 vs catalog 24
Mean Agent Readiness
38.7
+26.3 vs catalog 12.4
Spread
26.5–86.1
median 47.4 · σ 17.8
How the 26 split by band
Exemplar 6Strong 2Developing 9Thin 9Emerging 0Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 60.6 20.1 +40.5 26
Developer Ergonomics 51.7 23.4 +28.3 26
Operational Transparency 37.2 14 +23.2 26
Access Clarity 45.6 26.5 +19.1 26
Contract Governance 20.3 6.5 +13.8 26
Discoverability 70.4 61 +9.4 26

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) 50% 10% +40
MCP server (first-party) 65% 13% +52
Agent Skills 0% 0% 0
OAuth scopes 27% 11% +16
Security 100% 96% +4
Arazzo workflows 12% 2% +10
Governance rules 58% 13% +45

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 Kinde 86.1
  2. 2 Optimizely 78
  3. 3 Flagsmith 77.9
  4. 4 LaunchDarkly 77.9
  5. 5 Statsig 76.9
  6. 6 CloudBees 68.3
  7. 7 DevCycle 58.5
  8. 8 Amplitude 56.4
  9. 9 Bucket 52.5
  10. 10 Featureflip 52.3
Top by Agent Readiness
  1. 1 Optimizely 62.5
  2. 2 DevCycle 56.8
  3. 3 PostHog 55.7
  4. 4 Schematic 55.3
  5. 5 Amplitude 54.3
  6. 6 LaunchDarkly 54.1
  7. 7 Statsig 52.4
  8. 8 GrowthBook 48.8
  9. 9 Bucket 48.7
  10. 10 Kinde 48.5
All 26 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/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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