Split

Split, now part of Harness Feature Management and Experimentation, is a feature flag and experimentation platform that enables teams to safely release features with controlled rollouts and measure their impact. Their developer platform provides REST APIs for managing feature flags, environments, segments, and workspaces, along with SDKs for evaluating feature flags across multiple languages and platforms.

Split publishes 16 APIs on the APIs.io network, including Admin API, API Keys API, Attributes API, and 13 more. Tagged areas include Experimentation, Feature Flags, Feature Management, Rollouts, and SDK.

The Split catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Split’s developer surface includes authentication, developer portal, documentation, engineering blog, and 18 more developer resources.

🌐 Visit website 📡 Source on GitHub

42.0/100 developing ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessPaidSelf serve

21 APIs 16 Features

Experimentation Feature Flags Feature Management Rollouts SDK

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 42.0/100 · developing

Contract Quality 15.7 / 25

Developer Ergonomics 7.6 / 20

Access Clarity 6.6 / 20

Operational Transparency 1.4 / 13

Contract Governance 3.5 / 12

Discoverability 7.2 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Surface 0 / 5

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/split: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 21

Individual APIs this provider publishes, each with its own machine-readable definition.

Open Collections 19

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Rate Limits 1

Documented rate limits and quota policies.

Split Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Split Finops

FINOPS

Features 16

Notable capabilities this provider offers.

Individual free for solo devs, up to 10 MAU

Team: per-MAU pricing (custom)

Enterprise: Statistical Engine, Causal Impact, SCIM/SSO

Now Harness Feature Management & Experimentation (FME)

Server-side and client-side SDKs

Targeting rules with attributes

Experimentation with frequentist and Bayesian inference

Admin API: 80 req/min/org

Datafile-based SDK distribution (CDN-backed)

Events API: 100 events per request

OAuth 2.0 + API keys

Webhooks for split changes and rollouts

Audit logs (Enterprise)

Streaming changes (server-sent events)

Causal Impact analysis for treatment effect

Integration with Datadog, NewRelic, Segment for guardrails

Scroll for all 16

JSON Schema 46

Standalone JSON Schema definitions for this provider's data models.

Scroll for all 46

Examples 3

Example request and response payloads for these APIs.

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

Login

Documentation 4

Reference material describing how the API behaves

Documentation

JSONSchema

JSONSchema

JSONSchema

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

LlmsText

LlmsText

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONStructure

JSONLD

SpectralRules

Vocabulary

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: split
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/split.png
name: Split
description: Split, now part of Harness Feature Management and Experimentation, is a feature flag and experimentation platform
  that enables teams to safely release features with controlled rollouts and measure their impact. Their developer platform
  provides REST APIs for managing feature flags, environments, segments, and workspaces, along with SDKs for evaluating feature
  flags across multiple languages and platforms.
url: https://raw.githubusercontent.com/api-evangelist/split/refs/heads/main/apis.yml
created: '2026-03-20'
modified: '2026-05-19'
specificationVersion: '0.23'
type: Index
tags:
- Experimentation
- Feature Flags
- Feature Management
- Rollouts
- SDK
tags_raw:
- Experimentation
- Feature Flags
- Feature Management
- Rollouts
- SDKs
apis:
- aid: split:split-admin-api
  name: Split Admin API
  description: The Split Admin API is a REST API that enables programmatic management of workspaces (projects), environments,
    traffic types, attributes, users, groups, API keys, and change requests within the Split platform (now Harness Feature
    Management and Experimentation). The API uses resource-oriented URLs, returns JSON responses, and requires Admin API keys
    for authentication. All endpoints are prefixed with /internal/api/v2 on the api.split.io host.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Administration
  - Experimentation
  - Feature Flags
  - Feature Management
  properties:
  - type: Documentation
    url: https://docs.split.io/reference/introduction
  - type: OpenAPI
    url: openapi/split-admin-api-openapi.yml
  - type: JSONStructure
    url: json-structure/split-feature-flag-structure.json
- aid: split:split-javascript-sdk
  name: Split JavaScript SDK
  description: The Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based applications.
    It handles real-time feature flag synchronization, treatment evaluation, event tracking, and impression management.
  humanURL: https://help.split.io/hc/en-us/articles/360020448791-JavaScript-SDK
  tags:
  - Browser
  - Feature Flags
  - JavaScript
  - SDK
  properties:
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020448791-JavaScript-SDK
- aid: split:split-nodejs-sdk
  name: Split Node.js SDK
  description: The Split Node.js SDK enables server-side feature flag evaluation for Node.js applications with local evaluation,
    automatic synchronization, event tracking, and impression logging.
  humanURL: https://help.split.io/hc/en-us/articles/360020564931-Node-js-SDK
  tags:
  - Feature Flags
  - Node.js
  - SDK
  - Server-Side
  tags_raw:
  - Feature Flags
  - Node.js
  - SDK
  - Server Side
  properties:
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020564931-Node-js-SDK
- aid: split:split-java-sdk
  name: Split Java SDK
  description: The Split Java SDK provides server-side feature flag evaluation for Java and JVM-based applications with local
    treatment evaluation and streaming updates.
  humanURL: https://help.split.io/hc/en-us/articles/360020405151-Java-SDK
  tags:
  - Feature Flags
  - Java
  - SDK
  - Server-Side
  tags_raw:
  - Feature Flags
  - Java
  - SDK
  - Server Side
  properties:
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020405151-Java-SDK
- aid: split:split-python-sdk
  name: Split Python SDK
  description: The Split Python SDK enables server-side feature flag evaluation for Python applications, suitable for Django,
    Flask, and other frameworks.
  humanURL: https://help.split.io/hc/en-us/articles/360020359652-Python-SDK
  tags:
  - Feature Flags
  - Python
  - SDK
  - Server-Side
  tags_raw:
  - Feature Flags
  - Python
  - SDK
  - Server Side
  properties:
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020359652-Python-SDK
- aid: split:split-react-sdk
  name: Split React SDK
  description: The Split React SDK provides React-specific components and hooks for integrating feature flags including a
    SplitProvider context, useTreatments hooks, and conditional rendering components.
  humanURL: https://help.split.io/hc/en-us/articles/360038825091-React-SDK
  tags:
  - Feature Flags
  - Frontend
  - JavaScript
  - React
  - SDK
  properties:
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360038825091-React-SDK
- aid: split:split-api-keys-api
  name: Split API Keys API
  description: Create and delete API keys for authenticating with the Split platform, with configurable roles and scopes.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - APIKeys
  tags_raw:
  - API Keys
  properties:
  - type: OpenAPI
    url: openapi/split-api-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-attributes-api
  name: Split Attributes API
  description: Manage attributes used in targeting rules for feature flag definitions.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Attributes
  properties:
  - type: OpenAPI
    url: openapi/split-attributes-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-change-requests-api
  name: Split Change Requests API
  description: Manage change requests for controlled approval workflows when modifying feature flag definitions.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Change Requests
  properties:
  - type: OpenAPI
    url: openapi/split-change-requests-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-environments-api
  name: Split Environments API
  description: Manage environments within workspaces for deploying and testing feature flags across stages such as staging
    and production.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Environments
  properties:
  - type: OpenAPI
    url: openapi/split-environments-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-evaluation-api
  name: Split Evaluation API
  description: Endpoints for evaluating feature flags and retrieving treatment values for given keys and feature flag names.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Evaluation
  properties:
  - type: OpenAPI
    url: openapi/split-evaluation-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-events-api
  name: Split Events API
  description: Endpoints for tracking custom events used in experimentation and metrics measurement.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/split-events-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-feature-flag-definitions-api
  name: Split Feature Flag Definitions API
  description: Manage feature flag definitions in specific environments, including targeting rules, treatments, percentage
    rollouts, and default treatments.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Feature Flag Definitions
  properties:
  - type: OpenAPI
    url: openapi/split-feature-flag-definitions-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-feature-flags-api
  name: Split Feature Flags API
  description: Create, retrieve, update, and delete feature flags (splits) within workspaces. Feature flags represent the
    toggles used to control feature rollouts.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Feature Flags
  properties:
  - type: OpenAPI
    url: openapi/split-feature-flags-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-groups-api
  name: Split Groups API
  description: Manage groups for organizing users and assigning permissions.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Group
  tags_raw:
  - Groups
  properties:
  - type: OpenAPI
    url: openapi/split-groups-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-identities-api
  name: Split Identities API
  description: Manage identities (keys) within segments.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Identities
  properties:
  - type: OpenAPI
    url: openapi/split-identities-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-large-segments-api
  name: Split Large Segments API
  description: Manage large segments optimized for high-volume identity lists.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Large Segments
  properties:
  - type: OpenAPI
    url: openapi/split-large-segments-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-segments-api
  name: Split Segments API
  description: Manage segments which define reusable groups of identities for targeting.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Segments
  properties:
  - type: OpenAPI
    url: openapi/split-segments-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-traffic-types-api
  name: Split Traffic Types API
  description: Manage traffic types which define the entities (users, accounts, etc.) that feature flags target.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Traffic Types
  properties:
  - type: OpenAPI
    url: openapi/split-traffic-types-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-users-api
  name: Split Users API
  description: Manage users within the Split account, including inviting new users and updating user roles.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/split-users-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
- aid: split:split-workspaces-api
  name: Split Workspaces API
  description: Manage workspaces (projects) which organize feature flags and experiments across business units, product lines,
    and applications.
  humanURL: https://docs.split.io/reference/introduction
  tags:
  - Workspaces
  properties:
  - type: OpenAPI
    url: openapi/split-workspaces-api-openapi.yml
  - type: Documentation
    url: https://docs.split.io/reference/feature-flag-overview
  - type: JSONStructure
    url: json-structure/split-feature-flag-definition-structure.json
  - type: Documentation
    url: https://help.split.io/hc/en-us/articles/360020037072-Split-Evaluator
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/split/overview
- type: AgenticAccess
  url: agentic-access/split-agentic-access.yml
- type: DomainSecurity
  url: security/split-domain-security.yml
- type: Authentication
  url: authentication/split-authentication.yml
- type: GitHubOrganization
  url: https://github.com/splitio
- type: LinkedIn
  url: https://www.linkedin.com/company/split-software
- type: Portal
  url: https://docs.split.io/reference/introduction
- type: Documentation
  url: https://help.split.io/hc/en-us
- type: Website
  url: https://www.split.io/
- type: PrivacyPolicy
  url: https://www.harness.io/legal/privacy
- type: TermsOfService
  url: https://www.harness.io/legal/terms-of-use
- type: Blog
  url: https://www.split.io/blog/
- type: Login
  url: https://app.split.io/login
- type: JSONSchema
  url: json-schema/split-feature-flag-schema.json
- type: JSONSchema
  url: json-schema/split-feature-flag-definition-schema.json
- type: JSONSchema
  url: json-schema/split-segment-schema.json
- type: JSONStructure
  url: json-structure/split-feature-flag-structure.json
- type: JSONStructure
  url: json-structure/split-feature-flag-definition-structure.json
- type: JSONLD
  url: json-ld/split-context.jsonld
- type: SpectralRules
  url: rules/split-rules.yml
- type: Vocabulary
  url: vocabulary/split-vocabulary.yml
- type: Features
  data:
  - Individual free for solo devs, up to 10 MAU
  - 'Team: per-MAU pricing (custom)'
  - 'Enterprise: Statistical Engine, Causal Impact, SCIM/SSO'
  - Now Harness Feature Management & Experimentation (FME)
  - Server-side and client-side SDKs
  - Targeting rules with attributes
  - Experimentation with frequentist and Bayesian inference
  - 'Admin API: 80 req/min/org'
  - Datafile-based SDK distribution (CDN-backed)
  - 'Events API: 100 events per request'
  - OAuth 2.0 + API keys
  - Webhooks for split changes and rollouts
  - Audit logs (Enterprise)
  - Streaming changes (server-sent events)
  - Causal Impact analysis for treatment effect
  - Integration with Datadog, NewRelic, Segment for guardrails
  sources:
  - https://www.harness.io/pricing
  updated: '2026-05-04'
- type: LlmsText
  url: https://docs.split.io/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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APIs 21

Postman Collections 16

Open Collections 19

Pricing Plans 1

Rate Limits 1

FinOps 1

Features 16

Semantic Vocabularies 1

Spectral Rules 2

JSON Schema 46

JSON Structure 3

Examples 3

Security Posture 2

Agentic Access 1

Get Started 2

Documentation 4

Agent Surfaces 2

Design & Contract 5

Build 2

Access & Security 2

Commercial 2