# Spline

**Canonical:** https://apis.io/providers/spline-design/  
**Website:** https://spline.design  
**APIs profiled:** 0

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.

## Kin Score — 13.3 / 100 (emerging)

Scored 2026-08-19 under rubric 0.12.0. Trend: flat (-0.1 from 13.4).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 13.2 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 18.4 |
| Access Clarity | 18.4 |

## Agent readiness — 5.1 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (3)

- **Spline Design Domain Security** — TLSv1.3 · HSTS · DMARC
- **Spline Design Vulnerability Disclosure** — disclosure policy published
- **Spline Design Trust Center** — SOC 2, ISO 27001, GDPR

## 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

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/spline-design/). Scores are computed from the provider's own public artifacts under a published rubric.