Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-16 22:17 UTC

CesiumGS / cesium

An open-source JavaScript library for world-class 3D globes and maps :earth_americas:

JavaScriptApache-2.0★ 15,743 stars⑂ 3,870 forkssince Mar 2012View on GitHub ↗
KindLibraryhow this is determined
#3d#geospatial#gis#3d-tiles#cesium#3d-globe#gltf#czml#webgl

CesiumGS/cesium holds a health index of 98 out of 100, placing it in the Exceptional band. It scores highest on Community & Adoption (97/100) and lowest on AI Readiness (51/100). It was last updated today. 5 contributors account for most of its recent work.

98
overall / 100
Exceptional

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

98
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 86 is calibrated to 98 on the published index scale (record calibration 2026-08-02).

Ownership

CesiumOrganization
1,907 followers67 public repossince Aug 2019

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npmcesium1.145.01,149,37916715 days ago3dwebglgeospatialmapglobe

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

96Exceptional · 21% of overall

Development activity

100Exceptional
How it's scored
36/36Push recency — last push 0 days ago
36/36Commit cadence — 52/52 weeks with commits
18/18Commit volume — 3,282 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year3,282
human_commit_share0.99
days_since_last_push0
active_weeks_last_year52

Release discipline

90Excellent
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 15 days ago
27/27Release cadence — a release every ~26.6 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count100
latest_release_tag1.145
releases_from_tagsno
days_since_latest_release15
mean_days_between_releases26.6

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

97Exceptional · 17% of overall

Popularity & adoption

100Exceptional
How it's scored
60/60Stars — 15,743 stars
25/25Forks — 3,870 forks
14.8/15Watchers — 465 watchers
Inputs used
forks3,870
stars15,743
watchers465
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

92Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
6.3/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges3
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateyes

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 1,149,379 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagescesium
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads1,149,379
unverified_packages_excluded—
Excluded from scoring (no data or not applicable): Registry dependents. Remaining weights renormalized.

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

84Excellent · 23% of overall

Maintainer resilience (bus factor)

89Excellent
How it's scored
45.9/54Bus factor — 5 contributor(s) cover half of all commits
19.4/22.5Commit distribution — top contributor authored 14% of commits
13.5/13.5Contributor breadth — 100 contributors
10/10OpenSSF Scorecard: Contributors — project has 37 contributing companies or organizations
Inputs used
bus_factor5
contributors_sampled100
top_contributor_share0.136

Issue & PR responsiveness

70Good
How it's scored
32.1/42Issue resolution — 76% of issues closed
26.2/30PR acceptance — 6,068/6,959 decided PRs merged
0/13Newcomer PR acceptance — 0/3 first-time contributors' PRs merged in 30d
12/15OpenSSF Scorecard: Code-Review — Found 6/7 approved changesets -- score normalized to 8
Inputs used
merged_prs6,068
open_issues1,564
closed_issues5,093
prs_merged_7d10
prs_decided_7d13
prs_merged_30d47
prs_decided_30d57
issue_closed_ratio0.765
closed_unmerged_prs891
first_time_authors_30d2
first_time_prs_merged_30d0
first_time_prs_decided_30d3

Ownership & stewardship

79Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
23.6/25Owner reach — 1,907 followers of CesiumGS
25/25Track record — 67 public repos, account ~7 yr old
Inputs used
followers1,907
owner_typeOrganization
is_verifiedno
owner_loginCesiumGS
public_repos67
account_age_days2,574

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on npm
35/35Publish recency — latest publish 15 days ago
20/20Version history — 167 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagescesium
ecosystemsnpm
any_deprecatedno
min_days_since_publish15

Engineering Quality

Are baseline engineering and documentation practices in place?

94Exceptional · 19% of overall

Engineering practices

90Excellent
How it's scored
24/24CI workflows — 7 workflow(s)
24/24Tests present
16/16Linter config — eslint.config.js
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 6 out of 6 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

100Exceptional
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://cesium.com/cesiumjs/
10/10Repository description
10/10Topics — 9 topics
10/10Wiki
Inputs used
topics3d, geospatial, gis, 3d-tiles, cesium, 3d-globe, gltf, czml, webgl
has_wikiyes
homepagehttps://cesium.com/cesiumjs/
docs_sitehttps://cesium.com/cesiumjs/
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

65Good · 16% of overall

Security posture

56Moderate
How it's scored
6/7.5Binary-Artifacts — binaries present in source code
3.8/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5CI-Tests — 6 out of 6 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
6/7.5Code-Review — Found 6/7 approved changesets -- score normalized to 8
2.5/2.5Contributors — project has 37 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — Project has not signed or included provenance with any releases.
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate5.6
Excluded from scoring (no data or not applicable): Packaging. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
25/25Indirect dependencies free of known advisories — no indirect dependency carries a known advisory
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages29
unassessed_packages0
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the npm:cesium@1.145.0 runtime dependency closure — what installing the published package pulls in — 29 packages. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

51Moderate · 4% of overall

Agent context & guidance

14Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
14.5/40Legible commit history — 27 of 99 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.273
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

49Weak
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — eslint.config.js
11/11Static type checking — Specs/TypeScript/tsconfig.json, Tools/jsdoc/tsconfig.json, packages/engine/tsconfig.json, packages/sandcastle/tsconfig.json, tsconfig.json
0/10Reproducible environment
0/10Demonstrated agent practice — no agent-authored commits among the last 100
5/8Automated maintenance — dependency automation configured, none observed in the sampled commits
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileno
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configsSpecs/TypeScript/tsconfig.json, Tools/jsdoc/tsconfig.json, packages/engine/tsconfig.json, packages/sandcastle/tsconfig.json, tsconfig.json
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0

Code legibility for models

81Excellent
How it's scored
27/45Type-checkable code — JavaScript with type-check config (Specs/TypeScript/tsconfig.json, Tools/jsdoc/tsconfig.json, packages/engine/tsconfig.json, packages/sandcastle/tsconfig.json, tsconfig.json)
53.6/55Manageable file sizes — 59/2,315 source files over 60KB
Inputs used
primary_languageJavaScript
largest_source_bytes582,732
source_files_sampled2,315
oversized_source_files59

Machine-readable interfaces

100Exceptional
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — examples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_files—
interfaces_expected_of—
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

Key facts

15,743GitHub stars
100contributors
3,282commits, last 12 months
0days since last push
100releases
5bus factor
1,564open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • First-time contributor figures cover 12 of 18 authors (cap 12)

More detail

Star and fork history 0 ★ / 3,870 ⇿
0Stars
3,870Forks
49Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

Only the most recent history is shown — this repository exceeds the collection window, so the earliest history is not captured.

2,5003,0003,5004,0003,870122023-012024-112026-09
Major 0Minor 0Patch 5

Each point covers 4 days.

OpenSSF Scorecard 5.6 / 10
5.6aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-09-16 22:16 UTC

8Binary-Artifactsbinaries present in source code
5Branch-Protectionbranch protection is not maximal on development and all release branches
10CI-Tests6 out of 6 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
8Code-ReviewFound 6/7 approved changesets -- score normalized to 8
10Contributorsproject has 37 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
0Signed-ReleasesProject has not signed or included provenance with any releases.
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 3
RegistryPackageVersion constraintManifest
npm@cesium/engine^26.3.0package.json
npm@cesium/widgets^16.2.0package.json
npmprotobufjs^8.8.0package.json
All dependencies 116

Full resolved dependency set from the GitHub dependency graph: 3 direct and 113 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@cesium/engine^26.3.0direct
npm@cesium/widgets^16.2.0direct
npmprotobufjs^8.8.0direct
npm@amplitude/analytics-browser^2.44.6indirect
npm@ariakit/react^0.4.29indirect
npm@ast-grep/cli^0.45.1indirect
npm@cesium/eslint-config^14.0.0indirect
npm@cesium/wasm-splats^0.1.0-alpha.2indirect
npm@dotenvx/dotenvx^1.52.0indirect
npm@huggingface/transformers^4.2.0indirect
npm@monaco-editor/react^4.7.0indirect
npm@octokit/core^6.1.2indirect
npm@playwright/test^1.62.1indirect
npm@spz-loader/core0.3.1indirect
npm@stratakit/bricks^0.5.6indirect
npm@stratakit/foundations^0.5.0indirect
npm@stratakit/icons^0.4.3indirect
npm@stratakit/structures^0.5.10indirect
npm@tweenjs/tween.js^25.0.0indirect
npm@types/express^5.0.6indirect
npm@types/prettier^2.7.3indirect
npm@types/react^19.2.18indirect
npm@types/react-dom^19.2.5indirect
npm@vitejs/plugin-react^6.1.1indirect
npm@zip.js/zip.js^2.9.0indirect
npmallotment^1.20.4indirect
npmautolinker^4.0.0indirect
npmbitmap-sdf^1.0.3indirect
npmchokidar^5.0.0indirect
npmclassnames^2.5.1indirect
npmcloc^2.6.0-clocindirect
npmcompression^1.7.4indirect
npmdate-fns^4.1.0indirect
npmdompurify^3.4.14indirect
npmdraco3d^1.5.1indirect
npmearcut3.0.2indirect
npmesbuild^0.28.2indirect
npmeslint^10.9.1indirect
npmeslint-plugin-html^8.2.0indirect
npmeslint-plugin-react-hooks^7.1.1indirect
npmeslint-plugin-react-refresh^0.5.5indirect
npmeslint-seatbelt^0.1.3indirect
npmespree^11.1.1indirect
npmesquery^1.7.0indirect
npmexpress^5.1.0indirect
npmfastest-levenshtein^1.0.16indirect
npmglobals^17.11.0indirect
npmglobby16.2.3indirect
npmglsl-strip-comments^1.0.0indirect
npmgrapheme-splitter^1.0.4indirect
npmgulp^5.0.0indirect
npmgulp-clean-css^4.3.0indirect
npmgulp-insert^0.5.0indirect
npmgulp-rename^2.0.0indirect
npmgulp-replace^1.1.3indirect
npmgulp-tap^2.0.0indirect
npmgulp-zip^6.0.0indirect
npmhandlebars^4.7.8indirect
npmhusky^9.0.7indirect
npmistanbul-lib-instrument^6.0.0indirect
npmjasmine-core^5.9.0indirect
npmjsdoc^3.6.7indirect
npmjsep^1.3.8indirect
npmkarma^6.3.20indirect
npmkarma-chrome-launcher^3.1.0indirect
npmkarma-coverage^2.0.3indirect
npmkarma-detect-browsers^2.3.3indirect
npmkarma-edge-launcher^0.4.2indirect
npmkarma-firefox-launcher^2.1.1indirect
npmkarma-ie-launcher^1.0.0indirect
npmkarma-jasmine^5.1.0indirect
npmkarma-longest-reporter^1.1.0indirect
npmkarma-safari-launcher^1.0.0indirect
npmkarma-sourcemap-loader^0.4.0indirect
npmkarma-spec-reporter^0.0.36indirect
npmkdbush^4.1.0indirect
npmktx-parse^1.0.0indirect
npmlebab^3.2.8indirect
npmlerc^2.0.0indirect
npmmagic-string^0.25.3indirect
npmmarkdownlint-cli^0.49.0indirect
npmmerge-stream^2.0.0indirect
npmmersenne-twister^1.1.0indirect
npmmeshoptimizer^1.2.0indirect
npmmkdirp^3.0.1indirect
npmmonaco-editor^0.52.2indirect
npmnode-fetch^3.2.10indirect
npmnosleep.js^0.12.0indirect
npmopen^11.0.2indirect
npmpagefind^1.3.0indirect
npmpako^3.0.0indirect
npmprettier3.9.6indirect
npmprettier^3.8.1indirect
npmprismjs^1.28.0indirect
npmrbush^4.0.1indirect
npmreact^19.2.8indirect
npmreact-dom^19.2.8indirect
npmreact-markdown^10.1.0indirect
npmreact-stay-scrolled^10.0.0indirect
npmreact-use^17.6.1indirect
npmreact-virtuoso^4.18.12indirect
npmrecast^0.23.11indirect
npmremark-gfm^4.0.1indirect
npmrimraf^6.0.1indirect
npmrollup-pluginutils^2.8.2indirect
npmslugify^1.6.6indirect
npmtopojson-client^3.1.0indirect
npmtsd-jsdoc^2.5.0indirect
npmtypescript^6.0.2indirect
npmtypescript-eslint^8.68.0indirect
npmurijs^1.19.7indirect
npmvite8.0.16indirect
npmvite-plugin-static-copy^4.1.0indirect
npmyaml^2.9.0indirect
npmyargs^18.0.0indirect
npmyargs^18.1.0indirect
Dependency advisories 0

Installing npm:cesium@1.145.0 pulls in 29 packages, direct and transitive: 0 carry known advisories, of which 0 are direct dependencies.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

Raw JSON report machine-readable

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

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Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — npm.