Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-10-18 19:59 UTC

mui / base-ui

Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

TypeScriptMIT★ 11,174 stars⑂ 580 forkssince Feb 2024View on GitHub ↗
KindLibraryNetwork serviceWeb interfacehow this is determined
#accessibility#design-system#react#react-components#wai-aria#base-ui#components#ui

mui/base-ui holds a health index of 100 out of 100, placing it in the Exceptional band. It scores highest on Vitality (100/100) and lowest on AI Readiness (82/100). It was last updated 1 day ago. 3 contributors account for most of its recent work.

100
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.

100
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 92 is calibrated to 100 on the published index scale (record calibration 2026-08-02).

Ownership

MUIOrganization · verified domain
4,961 followers20 public repossince Nov 2017

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npm@base-ui/react1.9.067,474,082139 days agoreactreact-componentmuiunstyledbase-uia11y
npm@base-ui/utils0.5.072,259,143129 days ago—

Metrics by category

Vitality

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

100Exceptional · 21% of overall

Development activity

100Exceptional
How it's scored
36/36Push recency — last push 1 days ago
36/36Commit cadence — 52/52 weeks with commits
18/18Commit volume — 1,879 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year1,879
human_commit_share0.67
days_since_last_push1
active_weeks_last_year52

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 29 releases published
36/36Release recency — latest release 9 days ago
27/27Release cadence — a release every ~29.6 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count29
latest_release_tagv1.9.0
releases_from_tagsno
days_since_latest_release9
mean_days_between_releases29.6
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

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

94Exceptional · 17% of overall

Popularity & adoption

91Excellent
How it's scored
60/60Stars — 11,174 stars
23/25Forks — 580 forks
8.4/15Watchers — 33 watchers
Inputs used
forks580
stars11,174
watchers33
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 (MIT)
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_badges0
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_services—
has_pull_request_templateyes

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 139,733,225 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packages@base-ui/react, @base-ui/utils
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads139,733,225
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?

87Excellent · 23% of overall

Maintainer resilience (bus factor)

75Good
How it's scored
36/54Bus factor — 3 contributor(s) cover half of all commits
15.7/22.5Commit distribution — top contributor authored 30% of commits
13.5/13.5Contributor breadth — 97 contributors
10/10OpenSSF Scorecard: Contributors — project has 20 contributing companies or organizations
Inputs used
bus_factor3
contributors_sampled97
top_contributor_share0.302

Issue & PR responsiveness

81Excellent
How it's scored
33.1/42Issue resolution — 79% of issues closed
26.4/30PR acceptance — 3,755/4,266 decided PRs merged
6.5/13Newcomer PR acceptance — 2/4 first-time contributors' PRs merged in 30d
15/15OpenSSF Scorecard: Code-Review — all changesets reviewed
Inputs used
merged_prs3,755
open_issues337
closed_issues1,261
prs_merged_7d27
prs_decided_7d35
prs_merged_30d29
prs_decided_30d38
issue_closed_ratio0.789
closed_unmerged_prs511
first_time_authors_30d4
first_time_prs_merged_30d2
first_time_prs_decided_30d4

Ownership & stewardship

97Exceptional
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
25/25Owner reach — 4,961 followers of mui
21.6/25Track record — 20 public repos, account ~8 yr old
Inputs used
followers4,961
owner_typeOrganization
is_verifiedyes
owner_loginmui
public_repos20
account_age_days3,260

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 2 package(s) on npm
35/35Publish recency — latest publish 9 days ago
20/20Version history — 13 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packages@base-ui/react, @base-ui/utils
ecosystemsnpm
any_deprecatedno
min_days_since_publish9

Engineering Quality

Are baseline engineering and documentation practices in place?

90Excellent · 19% of overall

Engineering practices

90Excellent
How it's scored
24/24CI workflows — 12 workflow(s)
24/24Tests present
16/16Linter config — eslint.config.js, eslint.config.mjs
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 30 out of 30 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

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://base-ui.com
10/10Repository description
10/10Topics — 8 topics
0/10Wiki
Inputs used
topicsaccessibility, design-system, react, react-components, wai-aria, base-ui, components, ui
has_wikino
homepagehttps://base-ui.com
docs_sitehttps://base-ui.com
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

90Excellent · 16% of overall

Security posture

87Excellent
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
3/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5CI-Tests — 30 out of 30 merged PRs checked by a CI test -- score normalized to 10
1.2/2.5CII-Best-Practices — badge detected: Passing
7.5/7.5Code-Review — all changesets reviewed
2.5/2.5Contributors — project has 20 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 4 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
5/5Pinned-Dependencies — all dependencies are pinned
3.5/5SAST — SAST tool detected but not run on all commits
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
7.5/7.5Token-Permissions — GitHub workflow tokens follow principle of least privilege
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate8.7
Excluded from scoring (no data or not applicable): Packaging, Signed-Releases. 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_packages8
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:@base-ui/react@1.9.0 runtime dependency closure — what installing the published package pulls in — 8 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.

82Excellent · 4% of overall

Agent context & guidance

97Exceptional
How it's scored
45/45Agent instructions — AGENTS.md, CLAUDE.md
15/15Machine-readable docs (llms.txt) — llms.txt served by the project website (https://base-ui.com/llms.txt)
36.6/40Legible commit history — 46 of 67 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtyes
llms_txt_urlhttps://base-ui.com/llms.txt
legible_history_share0.687
agent_instruction_filesAGENTS.md, CLAUDE.md
agent_instruction_max_bytes10,111

Verify loop (build / test / typecheck)

79Good
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — eslint.config.js, eslint.config.mjs
11/11Static type checking — docs/tsconfig.json, examples/tanstack-start-tailwind-css/tsconfig.json, examples/vite-css/tsconfig.json, packages/react/tsconfig.json, packages/utils/tsconfig.json, playground/vite-app/tsconfig.json, scripts/tsconfig.json, test/performance/tsconfig.json, test/public-types/tsconfig.json, test/tsconfig.json, tsconfig.json
10/10Reproducible environment — devcontainer, lockfile
10/10Demonstrated agent practice — 9 of the last 100 commits agent-authored or agent-credited
5/8Automated maintenance — dependency automation configured, none observed in the sampled commits
10/10OpenSSF Scorecard: Pinned-Dependencies — all dependencies are pinned
Inputs used
has_nixno
has_testsyes
lockfilespnpm-lock.yaml
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontaineryes
has_linter_configyes
typecheck_configsdocs/tsconfig.json, examples/tanstack-start-tailwind-css/tsconfig.json, examples/vite-css/tsconfig.json, packages/react/tsconfig.json, packages/utils/tsconfig.json, playground/vite-app/tsconfig.json, scripts/tsconfig.json, test/performance/tsconfig.json, test/public-types/tsconfig.json, test/tsconfig.json, tsconfig.json
agent_commit_share0.09
toolchain_manifests—
dependency_bot_commit_share0

Code legibility for models

99Exceptional
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
54.3/55Manageable file sizes — 29/2,218 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes506,180
source_files_sampled2,218
oversized_source_files29

Machine-readable interfaces

40Weak
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)
0/20MCP server
40/40Runnable examples — demos, examples
Inputs used
example_dirsdemos, examples
has_mcp_signalno
api_schema_files—
interfaces_expected_ofnetwork-service

Key facts

11,174GitHub stars
97contributors
1,879commits, last 12 months
1days since last push
29releases
3bus factor
337open 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 16 authors (cap 12)

More detail

Star and fork history 0 ★ / 580 ⇿
0Stars
580Forks
29Releases

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.

0100200300400500600574182024-022025-062026-10
Major 1Minor 9Patch 1

Each point covers 3 days.

OpenSSF Scorecard 8.7 / 10
8.7aggregate

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 · 2026-10-18 19:59 UTC

10Binary-Artifactsno binaries found in the repo
4Branch-Protectionbranch protection is not maximal on development and all release branches
10CI-Tests30 out of 30 merged PRs checked by a CI test -- score normalized to 10
5CII-Best-Practicesbadge detected: Passing
10Code-Reviewall changesets reviewed
10Contributorsproject has 20 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 4 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
10Pinned-Dependenciesall dependencies are pinned
7SASTSAST tool detected but not run on all commits
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
10Token-PermissionsGitHub workflow tokens follow principle of least privilege
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 13
RegistryPackageVersion constraintManifest
npm@babel/runtime^7.29.7 || ^8.0.0packages/react/package.json
npm@base-ui/utilsworkspace:*packages/react/package.json
npm@floating-ui/react-dom^2.1.9packages/react/package.json
npm@floating-ui/utils^0.2.12packages/react/package.json
npmuse-sync-external-store^1.7.0packages/react/package.json
npm@babel/runtime^7.29.7 || ^8.0.0packages/utils/package.json
npm@floating-ui/utils^0.2.12packages/utils/package.json
npmreselect^5.3.0packages/utils/package.json
npmuse-sync-external-store^1.7.0packages/utils/package.json
npmradix-ui^1.8.1playground/vite-app/package.json
npmreact19.3.0playground/vite-app/package.json
npmreact-dom19.3.0playground/vite-app/package.json
npmreact-router8.4.0playground/vite-app/package.json
All dependencies 139

Full resolved dependency set from the GitHub dependency graph: 14 direct and 125 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@babel/runtime^7.29.7 || ^8.0.0direct
npm@base-ui/utilslatestdirect
npm@floating-ui/react-dom^2.1.9direct
npm@floating-ui/utils^0.2.12direct
npmradix-ui^1.8.1direct
npmreact19.3.0direct
npmreact^19direct
npmreact^19.3.0direct
npmreact-dom19.3.0direct
npmreact-dom^19direct
npmreact-dom^19.3.0direct
npmreact-router8.4.0direct
npmreselect^5.3.0direct
npmuse-sync-external-store^1.7.0direct
npm@base-ui/reactlatestindirect
npm@date-fns/tz1.5.0indirect
npm@eslint/js10.0.1indirect
npm@eslint/js^10.0.1indirect
npm@mdx-js/loader^3.1.1indirect
npm@mdx-js/mdx3.1.1indirect
npm@mdx-js/react^3.1.1indirect
npm@mui/internal-benchmark0.1.1-canary.6indirect
npm@mui/internal-bundle-size-checker1.1.1-canary.4indirect
npm@mui/internal-docs-infra0.13.1-canary.17indirect
npm@next/mdx^16.4.0indirect
npm@playwright/test1.64.0indirect
npm@pnpm/exe.android-arm6412.11.2indirect
npm@pnpm/exe.android-x6412.11.2indirect
npm@pnpm/exe.darwin-arm6412.11.2indirect
npm@pnpm/exe.darwin-x6412.11.2indirect
npm@pnpm/exe.freebsd-x6412.11.2indirect
npm@pnpm/exe.linux-arm6412.11.2indirect
npm@pnpm/exe.linux-arm64-musl12.11.2indirect
npm@pnpm/exe.linux-ppc6412.11.2indirect
npm@pnpm/exe.linux-riscv6412.11.2indirect
npm@pnpm/exe.linux-s390x12.11.2indirect
npm@pnpm/exe.linux-x6412.11.2indirect
npm@pnpm/exe.linux-x64-musl12.11.2indirect
npm@pnpm/exe.win32-arm6412.11.2indirect
npm@pnpm/exe.win32-x6412.11.2indirect
npm@react-spring/web^10.1.2indirect
npm@stefanprobst/rehype-extract-toc^3.0.0indirect
npm@tailwindcss/postcss4.3.3indirect
npm@tailwindcss/vite4.3.3indirect
npm@tailwindcss/vite^4.2.2indirect
npm@tanstack/devtools-vite^0.6.0indirect
npm@tanstack/eslint-config^0.4.0indirect
npm@tanstack/react-devtools^0.10.0indirect
npm@tanstack/react-form^1.33.5indirect
npm@tanstack/react-router^1.168.3indirect
npm@tanstack/react-router-devtools^1.166.11indirect
npm@tanstack/react-start^1.167.6indirect
npm@tanstack/react-virtual^3.14.18indirect
npm@tanstack/router-plugin^1.167.4indirect
npm@testing-library/dom10.4.2indirect
npm@testing-library/jest-dom7.0.1indirect
npm@testing-library/react16.3.3indirect
npm@testing-library/user-event14.6.7indirect
npm@types/gtag.js0.0.20indirect
npm@types/hast3.0.5indirect
npm@types/luxon3.7.6indirect
npm@types/mdx^2.0.14indirect
npm@types/node22.18.13indirect
npm@types/node22.20.5indirect
npm@types/react19.3.0indirect
npm@types/react^19indirect
npm@types/react-dom19.3.0indirect
npm@types/react-dom^19indirect
npm@types/unist3.0.3indirect
npm@types/use-sync-external-store1.7.0indirect
npm@typescript/typescript66.0.2indirect
npm@vitejs/plugin-react6.1.2indirect
npm@vitejs/plugin-react^6.0.1indirect
npm@vitest/browser-playwright5.0.4indirect
npmclipboard-copy^4.0.1indirect
npmclsx2.1.1indirect
npmclsx^2.1.1indirect
npmcross-env10.1.0indirect
npmdate-fns4.4.0indirect
npmes-toolkit1.52.0indirect
npmes-toolkit^1.52.0indirect
npmeslint10.12.0indirect
npmeslint^10.1.0indirect
npmeslint-plugin-react-hooks7.1.1indirect
npmeslint-plugin-react-hooks^7.0.1indirect
npmeslint-plugin-react-refresh0.5.7indirect
npmeslint-plugin-react-refresh^0.5.2indirect
npmestree-util-value-to-estree^3.5.0indirect
npmglobals17.13.0indirect
npmglobals^17.4.0indirect
npmglobby^16.2.4indirect
npmhast^1.0.0indirect
npmhast-util-heading-rank^3.0.0indirect
npmhast-util-to-string^3.0.1indirect
npmis-wsl3.1.1indirect
npmlucide-react^1.56.0indirect
npmlucide-react^1.7.0indirect
npmluxon3.7.2indirect
npmlz-string^1.5.0indirect
npmmatch-sorter^8.3.0indirect
npmmdast-util-mdx-jsx3.2.0indirect
npmmotion14.1.1indirect
npmnext16.3.8indirect
npmpnpm12.11.2indirect
npmpostcss^8.5.30indirect
npmpostcss-custom-media^12.0.3indirect
npmpostcss-import^17.0.0indirect
npmprettier3.9.10indirect
npmprettier^3.8.1indirect
npmreact-error-boundary6.1.6indirect
npmreact-hook-form^7.90.0indirect
npmremark-gfm^4.0.1indirect
npmremark-parse^11.0.0indirect
npmremark-rehype^11.1.2indirect
npmremark-stringify11.0.0indirect
npmremark-typography0.8.10indirect
npmrimraf6.1.3indirect
npmscroll-into-view-if-needed3.1.0indirect
npmserve14.2.6indirect
npmserver-only^0.0.1indirect
npmtailwindcss4.3.3indirect
npmtailwindcss^4.2.2indirect
npmtypescript7.0.2indirect
npmtypescript^5.9.3indirect
npmtypescript^6.0.2indirect
npmtypescript-eslint8.58.0indirect
npmtypescript-eslint8.71.2indirect
npmtypescript-eslint^8.58.0indirect
npmunified11.0.5indirect
npmunist-util-visit5.1.0indirect
npmunist-util-visit-parents^6.0.2indirect
npmutil0.12.5indirect
npmvite8.3.4indirect
npmvite^8.0.1indirect
npmvitest5.0.4indirect
npmvitest-browser-react2.3.0indirect
npmwebpack5.111.1indirect
npmyargs18.2.0indirect
npmzod4.6.7indirect
Dependency advisories 0

Installing npm:@base-ui/react@1.9.0 pulls in 8 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.