Feature

Feature Flags

Toggle behavior without redeploying.

8 providers 38 APIs 6 declared variants

Capabilities can be enabled per environment, tenant, or cohort at runtime. Lets integrators ship dark, roll out gradually, and kill a bad change without a release.

8 API providers on the APIs.io network offer feature flags. The highest-rated are Amazon Firewall Manager, Amazon Data Lifecycle Manager, WunderGraph, AB Tasty, PostHog.

Providers

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

Strong 2 Solid coverage with minor gaps
Amazon Firewall ManagerAWS Firewall Manager is a security management service that allows you to centrally configure and manage fir...1 API58.1Amazon Data Lifecycle ManagerAmazon Data Lifecycle Manager provides an automated way to manage the lifecycle of your AWS resources. Usin...1 API55.3
Developing 5 Usable, with meaningful gaps to close
WunderGraphFull Lifecycle API Management for (Federated) GraphQL. Schema Registry, composition checks, analytics, metr...11 APIs53.2AB TastyAt AB Tasty, we are your partner for pushing great ideas even further through optimization. We achieve this...1 API51.7PostHogPostHog is an open source product analytics platform that provides event tracking, session recording, featu...1 API50.8Instabug (Luciq)Instabug — now rebranded as Luciq — is an agentic mobile observability platform covering bug reporting, cra...1 API49.4HarnessHarness is an AI-powered software delivery platform that automates and accelerates the entire software deve...17 APIs47.5
Thin 1 Limited public surface area
bugsnagBugsnag is an application stability monitoring platform that helps software teams detect, diagnose, and fix...5 APIs32.4

What Providers Actually Declared

This feature is a canonical term. These are the free-text strings providers wrote in their own apis.yml that map onto it.

Feature Flag ManagementFeature FlagsFeature Flags + Experiments: 1M requests free, tiered down to $0.00001Feature flags & experiments (Preferred+)Prevention pillar: real-time alerts, release management, feature flags, PR review by Release AgentTag-Based Targeting

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Work with this as data

Every feature here is available over the APIs.io API and to AI agents over MCP. Features is not yet its own endpoint on the v1 API. Reach it through catalog search and the tag graph, or the MCP server.

MCP server

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https://apis.io/mcp

Tools for features

3 MCP tools reach this
  • 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
Search the catalog 
curl "https://apis.io/api/v1/search?q=feature-flags&limit=10"
Everything under a tag 
curl "https://apis.io/api/v1/tags/feature-flags"

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