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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.

agent aware

Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.

Kin Score

API Evangelist profiles Split the way a machine reads it — 122 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Split scores 39.0/100 (thin), with a separate agent-readiness read of 24/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Split Kin Score — API readiness rating by API Evangelist

Put this on your own site. The badge is drawn live from Split's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.

<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/split/"
   title="Split on API Evangelist — API profile and Kin Score">
  <img src="https://apis.io/badge/split.svg"
       alt="Split Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>

More shapes, themes and sizes → · Score as JSON · How badges work

How we profile Split

Each block below is one kind of artifact we hold for Split. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 10

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

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

Split Admin API

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 req...

Split JavaScript SDK

The Split JavaScript SDK provides client-side integration for feature flag evaluation in browser-based applications. It handles real-time feature flag synchronization, treatment...

Split Node.js SDK

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.

Split Java SDK

The Split Java SDK provides server-side feature flag evaluation for Java and JVM-based applications with local treatment evaluation and streaming updates.

Split Python SDK

The Split Python SDK enables server-side feature flag evaluation for Python applications, suitable for Django, Flask, and other frameworks.

Split React SDK

The Split React SDK provides React-specific components and hooks for integrating feature flags including a SplitProvider context, useTreatments hooks, and conditional rendering ...

Split Evaluation API

Endpoints for evaluating feature flags and retrieving treatment values for given keys and feature flag names.

Split Events API

Endpoints for tracking custom events used in experimentation and metrics measurement.

Split Feature Flag Definitions API

Manage feature flag definitions in specific environments, including targeting rules, treatments, percentage rollouts, and default treatments.

Split Feature Flags API

Create, retrieve, update, and delete feature flags (splits) within workspaces. Feature flags represent the toggles used to control feature rollouts.

Scroll within the panel for all 10 ·

Postman Collections 16

A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.

Ready-to-run Postman collections for exercising this provider's APIs.

Scroll within the panel for all 16 ·

Open Collections 19

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

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

Scroll within the panel for all 19 ·

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.

Published pricing tiers and plan structures.

Split Plans Pricing

3 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Split Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

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

Split Finops

FINOPS

Features 16

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

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 within the panel for all 16 ·

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Split Context

0 classes · 11 properties

JSON-LD

Spectral Rules 2

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Split API Rules

6 rules · 4 warnings

SPECTRAL

Split API Rules

11 rules · 4 errors · 5 warnings

SPECTRAL

JSON Schema 46

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

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

AllTreatmentsResult

0 properties

JSON SCHEMA

ApiKey

6 properties

JSON SCHEMA

ApiKeyCreate

5 properties

JSON SCHEMA

Attribute

6 properties

JSON SCHEMA

Bucket

2 properties

JSON SCHEMA

ChangeRequest

9 properties

JSON SCHEMA

ChangeRequestList

4 properties

JSON SCHEMA

Condition

2 properties

JSON SCHEMA

Environment

3 properties

JSON SCHEMA

EnvironmentCreate

2 properties

JSON SCHEMA

EnvironmentRef

2 properties

JSON SCHEMA

EnvironmentUpdate

2 properties

JSON SCHEMA

EvaluationAttributes

2 properties

JSON SCHEMA

EventProperties

1 properties

JSON SCHEMA

Split Feature Flag Definition

12 properties

JSON SCHEMA

Split Feature Flag

5 properties

JSON SCHEMA

FeatureFlag

5 properties

JSON SCHEMA

FeatureFlagCreate

3 properties

JSON SCHEMA

FeatureFlagDefinition

12 properties

JSON SCHEMA

FeatureFlagDefinitionCreate

6 properties

JSON SCHEMA

FeatureFlagDefinitionList

4 properties

JSON SCHEMA

FeatureFlagDefinitionUpdate

7 properties

JSON SCHEMA

FeatureFlagList

4 properties

JSON SCHEMA

FeatureFlagUpdate

2 properties

JSON SCHEMA

Group

4 properties

JSON SCHEMA

GroupCreate

2 properties

JSON SCHEMA

GroupRef

2 properties

JSON SCHEMA

HealthCheckResponse

2 properties

JSON SCHEMA

LargeSegmentList

4 properties

JSON SCHEMA

Matcher

8 properties

JSON SCHEMA

Split Segment

6 properties

JSON SCHEMA

SegmentKeysList

4 properties

JSON SCHEMA

SegmentKeysUpdate

2 properties

JSON SCHEMA

SegmentList

4 properties

JSON SCHEMA

Tag

1 properties

JSON SCHEMA

TargetingRule

2 properties

JSON SCHEMA

TrafficType

2 properties

JSON SCHEMA

Treatment

3 properties

JSON SCHEMA

TreatmentResult

3 properties

JSON SCHEMA

TreatmentsResult

0 properties

JSON SCHEMA

User

6 properties

JSON SCHEMA

UserInvite

2 properties

JSON SCHEMA

UserList

4 properties

JSON SCHEMA

UserUpdate

3 properties

JSON SCHEMA

Workspace

3 properties

JSON SCHEMA

WorkspaceList

4 properties

JSON SCHEMA

Scroll within the panel for all 46 ·

JSON Structure 3

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Split Feature Flag Definition Structure

0 properties

JSON STRUCTURE

Split Feature Flag Structure

0 properties

JSON STRUCTURE

Split Structure

0 properties

JSON STRUCTURE

Examples 3

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Split Authentication

http · 1 scheme

SECURITY

Split Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Split Agentic Access

53 operations · 28 acting · 1 human-in-the-loop

53 operations · 28 acting

AGENTIC

Resources

Every other property we hold for Split — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Get Started 2

Portal, sign-up, and the first successful call

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 2

Authentication, authorization, and security posture

Commercial 2

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

← All providers · Data indexed from github.com/api-evangelist/split · machine-readable index on apis.io

Where this information came from

This is an independent, third-party profile of Split, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

info@apievangelist.com · Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.