Spline

Spline is a web-based, real-time collaborative 3D design platform used to create interactive 3D scenes, animations, and product experiences for the web, iOS, and Android. The Spline editor runs in the browser and supports multi-user collaboration with comments, link sharing, and team workspaces. Designers build scenes using primitives and modeling tools, a layer-based material system, states, events, timeline animation, game controls, physics, and particles. Scenes can be exported as GLTF/GLB, USDZ, STL, video, image sequences, or as code for the web, SwiftUI, and Kotlin. Spline's developer surface centers on runtime libraries — `@splinetool/runtime`, the `@splinetool/react-spline` React component, the `r3f-spline` hook for react-three-fiber, and `spline-ios` for Apple platforms — plus an embeddable Spline Viewer web component. Inside scenes, Spline exposes a Real-time API for dynamic data binding and webhooks for event-driven integrations. The company also ships Hana, a web-based collaborative UI design tool with infinite canvas, vector networks, visual effects, and motion design. Spline's revenue model is SaaS subscription with Free, Starter ($12/mo annual), Professional ($20/mo annual), and Enterprise tiers, plus a Spline AI add-on ($5/seat/month, 2000 AI credits) for prompt-driven 3D generation. There is no publicly documented Spline REST/management API or OpenAPI specification at this time; programmatic surfaces are limited to the runtime SDKs, the Real-time API, and webhooks exposed from within a scene.

Spline is profiled on the APIs.io network. Tagged areas include 3D Design, 3D Modeling, Collaborative Design, Interactive 3D, and Web Embed.

Spline’s developer surface includes documentation, pricing, engineering blog, academy / training, GitHub presence, YouTube channel, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub

15.2/100 emerging ▬ flat Agent 6/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

3D Design3D ModelingCollaborative DesignInteractive 3DWeb EmbedWebGLAnimationMotion DesignMaterialsPhysicsParticlesSwiftUIKotlinReactReact Three FiberGLTFUSDZWebhooksReal-time APIAI 3D GenerationDesign Tools

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 15.2/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 3.0 / 20

Commercial Clarity 3.7 / 20

Operational Transparency 1.7 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 6/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

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/spline-design: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Webhooks

Webhooks

Build 7

SDKs, sample code, and the tooling you integrate with

CodeAPIWeb

CodeAPISwiftUI

CodeAPIKotlin

GitHub

ReactSDK

R3FSDK

NPMRuntime

Scroll for all 7

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Learn 2

Tutorials, courses, talks, and written guidance

Academy

Academy

YouTube

YouTube

Operate 2

Status, limits, changes, and where to get help

Community

Community

Contact

Contact

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 4

The organization behind the API

Website

Blog

Careers

Twitter

Other 5

Properties that don't map to a standard resource type

Application

Hana

RealTimeAPI

iOSRuntime

Source (apis.yml)

aid: spline-design
name: Spline
description: Spline is a web-based, real-time collaborative 3D design platform used to create interactive 3D scenes, animations,
  and product experiences for the web, iOS, and Android. The Spline editor runs in the browser and supports multi-user collaboration
  with comments, link sharing, and team workspaces. Designers build scenes using primitives and modeling tools, a layer-based
  material system, states, events, timeline animation, game controls, physics, and particles. Scenes can be exported as GLTF/GLB,
  USDZ, STL, video, image sequences, or as code for the web, SwiftUI, and Kotlin. Spline's developer surface centers on runtime
  libraries — `@splinetool/runtime`, the `@splinetool/react-spline` React component, the `r3f-spline` hook for react-three-fiber,
  and `spline-ios` for Apple platforms — plus an embeddable Spline Viewer web component. Inside scenes, Spline exposes a Real-time
  API for dynamic data binding and webhooks for event-driven integrations. The company also ships Hana, a web-based collaborative
  UI design tool with infinite canvas, vector networks, visual effects, and motion design. Spline's revenue model is SaaS
  subscription with Free, Starter ($12/mo annual), Professional ($20/mo annual), and Enterprise tiers, plus a Spline AI add-on
  ($5/seat/month, 2000 AI credits) for prompt-driven 3D generation. There is no publicly documented Spline REST/management
  API or OpenAPI specification at this time; programmatic surfaces are limited to the runtime SDKs, the Real-time API, and
  webhooks exposed from within a scene.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
position: Provider
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/spline-design.png
tags:
- 3D Design
- 3D Modeling
- Collaborative Design
- Interactive 3D
- Web Embed
- WebGL
- Animation
- Motion Design
- Materials
- Physics
- Particles
- SwiftUI
- Kotlin
- React
- React Three Fiber
- GLTF
- USDZ
- Webhooks
- Real-time API
- AI 3D Generation
- Design Tools
url: https://raw.githubusercontent.com/api-evangelist/spline-design/refs/heads/main/apis.yml
created: '2026-05-25'
modified: '2026-05-25'
specificationVersion: '0.20'
apis: []
common:
- type: TrustCenter
  url: security/spline-design-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/spline-design-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/spline-design-domain-security.yml
- type: Website
  url: https://spline.design
- type: Documentation
  url: https://docs.spline.design
- type: Application
  url: https://app.spline.design
- type: Pricing
  url: https://spline.design/pricing
- type: Blog
  url: https://blog.spline.design
- type: Community
  url: https://community.spline.design
- type: Academy
  url: https://academy.spline.design
- type: Hana
  url: https://spline.design/hana
- type: AI
  url: https://spline.design/ai
- type: Webhooks
  url: https://docs.spline.design/interaction-states-events-and-actions/webhooks
- type: RealTimeAPI
  url: https://docs.spline.design/interaction-states-events-and-actions/real-time-api
- type: CodeAPIWeb
  url: https://docs.spline.design/exporting-your-scene/web/code-api-for-web
- type: CodeAPISwiftUI
  url: https://docs.spline.design/exporting-your-scene/apple-platform/code-api-for-swift-ui
- type: CodeAPIKotlin
  url: https://docs.spline.design/exporting-your-scene/android/code-api-for-kotlin
- type: GitHub
  url: https://github.com/splinetool
- type: ReactSDK
  url: https://github.com/splinetool/react-spline
- type: R3FSDK
  url: https://github.com/splinetool/r3f-spline
- type: iOSRuntime
  url: https://github.com/splinetool/spline-ios
- type: NPMRuntime
  url: https://www.npmjs.com/package/@splinetool/runtime
- type: Careers
  url: https://www.ycombinator.com/companies/spline/jobs
- type: Contact
  url: mailto:help@spline.design
- type: Twitter
  url: https://twitter.com/splinetool
- type: YouTube
  url: https://www.youtube.com/@splinetool
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com