Cesium
Cesium provides an open platform for 3D geospatial applications, offering tools like CesiumJS, Cesium ion, and integrations for Unity, Unreal, and Omniverse. It serves developers, enterprises, and government agencies with streaming 3D Tiles, curated global content, and AI‑enabled workflows, enabling visualization, analysis, and design of complex spatial data.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Cesium the way a machine reads it — 20 machine-readable artifacts across 1 API, 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 — Cesium scores 42.5/100 (developing), with a separate agent-readiness read of 31/100 (agent ready). 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
How this is scored →scored 2026-10-17 · rubric v0.24.0
Put this on your own site. The badge is drawn live from Cesium'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/cesium/"
title="Cesium on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/cesium.svg"
alt="Cesium Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/cesium/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/cesium/"
title="Cesium on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/cesium/card.svg"
alt="Cesium Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Cesium
Each block below is one kind of artifact we hold for Cesium. 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.
Cesium ion API
Cesium ion REST API for tiling and streaming capabilities
Cesium Archives API
Archives allow you to make downloadable versions of your assets for offline use or hosting outside of Cesium ion. With archives you can: * Create a full copy of an asset as a zi...
Cesium Asset Elements API
The Asset Elements API provides a mechanism to query individual elements within an asset.
Cesium Assets API
Whether you have imagery, terrain, 3D buildings, point clouds, photogrammetry, or one of the many other types of data we support, ion creates what we refer to as an asset. There...
Cesium Experimental API
Experimental API lets users test emerging capabilities and help shape future improvements. These endpoints are not intended for production use and may be removed without notice.
Cesium Exports API
Allows you to export the files for a particular asset to an Amazon S3 bucket of your choice. These files can then be hosted through a custom server or downloaded for local/offli...
Cesium Labels API
Labels let you organize assets and stories with reusable metadata tags. The Labels API provides a mechanism to list, create, update, and delete account labels. Asset-label assig...
Cesium OAuth API
The Oauth API provides a mechanism to allow third-party applications to access a user's ion account data through the Oauth 2.0 authorization framework.
Cesium Tokens API
The Tokens API provides a mechanism to create and manage access tokens. Access tokens are used to give applications access to your ion account, including access to stream your i...
Cesium User API
Routes related to the currently authenticated account.
Scroll within the panel for all 10 ·
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.
Cesium Plans Pricing
PLANSSemantic 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.
Cesium Context
JSON-LDSpectral Rules 1
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.
Cesium API Rules
SPECTRALJSON Schema 6
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.
Archive Metadata
JSON SCHEMAAsset Endpoint
JSON SCHEMAAsset Metadata
JSON SCHEMAExternal Asset Endpoint
JSON SCHEMAToken Metadata
JSON SCHEMAToken Metadata
JSON SCHEMASecurity Posture 1
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.
Resources
Every other property we hold for Cesium — 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 1
Portal, sign-up, and the first successful call
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 3
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/cesium · machine-readable index on apis.io
This is an independent, third-party profile of Cesium, 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.