Sketchfab website screenshot

Sketchfab

Sketchfab is the largest dedicated platform for publishing, sharing, discovering, buying, and embedding interactive 3D content on the web. Founded in Paris in 2012 by Cedric Pinson and Alban Denoyel and acquired by Epic Games on July 21, 2021, Sketchfab hosts millions of 3D models from artists, museums, scanning rigs, and studios — much of it Creative Commons licensed. The platform exposes a public REST Data API for programmatic upload and content management, a JavaScript Viewer API for controlling the embedded WebGL/WebXR viewer, a Download API delivering glTF/GLB/USDZ, an oEmbed endpoint, and OAuth 2.0 authentication, alongside native exporters for every major 3D / DCC tool. Following the Fab.com launch in 2024 the Sketchfab Store has been retired into Epic's unified content marketplace while the publishing, viewing, and developer APIs remain on sketchfab.com.

Sketchfab publishes 13 APIs on the APIs.io network, including Download API, oEmbed API, OAuth 2.0 API, and 10 more. Tagged areas include 3D, Models, Marketplace, Viewer, and WebGL.

The Sketchfab catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Sketchfab’s developer surface includes authentication, developer portal, documentation, getting-started guide, signup flow, pricing, engineering blog, and 49 more developer resources.

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56.9/100 strong ▬ flat Agent 26/100 agent aware Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessPaidSelf serve
1 APIs 14 Features
3DModelsMarketplaceViewerWebGLglTFARVRCreativeEpic Games

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 56.9/100 · strong
Contract Quality 15.7 / 23
Developer Ergonomics 11.8 / 18
Access Clarity 14.0 / 18
Operational Transparency 4.0 / 12
Contract Governance 1.1 / 11
Discoverability 5.3 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 26/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 0 / 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 6 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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APIs 14

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

Sketchfab Viewer API

Client-side JavaScript library for controlling an embedded Sketchfab 3D viewer. Exposes camera control, screenshot capture, annotation, material and texture manipulation, post-p...

Sketchfab Download API

Programmatic download of 3D models from Sketchfab's library in glTF, GLB, and USDZ formats. Requires end-user OAuth authentication. Source formats (FBX, OBJ, etc.) are not expos...

Sketchfab oEmbed API

oEmbed-protocol endpoint at https://sketchfab.com/oembed that returns JSON containing an HTML