Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-17 21:55 UTC

nodemailer / mailparser

Decode mime formatted e-mails

JavaScriptCustom license★ 1,670 stars⑂ 288 forkssince Oct 2010View on GitHub ↗
KindLibraryhow this is determined
#mailparser#mime

nodemailer/mailparser holds a health index of 81 out of 100, placing it in the Excellent band. It scores highest on Vitality (86/100) and lowest on Security (56/100). It was last updated 2 days ago. A single contributor accounts for most of its recent work.

81
overall / 100
Excellent

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.

81
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 69 is calibrated to 81 on the published index scale (record calibration 2026-08-02).

Ownership

nodemailerOrganization · verified domain
144 followers41 public repossince Dec 2015

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
npmmailparser3.9.2821,067,4971452 days ago

Metrics by category

Vitality

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

86Excellent · 21% of overall

Development activity

77Good
How it's scored
36/36Push recency — last push 2 days ago
13.8/36Commit cadence — 20/52 weeks with commits
17.2/18Commit volume — 81 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year81
human_commit_share0.61
days_since_last_push2
active_weeks_last_year20

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 41 releases published
36/36Release recency — latest release 2 days ago
27/27Release cadence — a release every ~1.6 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count41
latest_release_tagv3.9.28
releases_from_tagsno
days_since_latest_release2
mean_days_between_releases1.6
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?

73Good · 17% of overall

Popularity & adoption

81Excellent
How it's scored
52.3/60Stars — 1,670 stars
20.5/25Forks — 288 forks
8.4/15Watchers — 34 watchers
Inputs used
forks288
stars1,670
watchers34
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

44Weak
How it's scored
22.5/22.5README
16.9/22.5License — license file present, not a recognized license
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges0
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_services—
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 21,067,497 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesmailparser
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads21,067,497
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?

70Good · 23% of overall

Maintainer resilience (bus factor)

39Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
6.5/22.5Commit distribution — top contributor authored 71% of commits
13.5/13.5Contributor breadth — 60 contributors
10/10OpenSSF Scorecard: Contributors — project has 6 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled60
top_contributor_share0.711

Issue & PR responsiveness

65Good
How it's scored
41.9/42Issue resolution — 100% of issues closed
23.2/30PR acceptance — 120/155 decided PRs merged
0/13Newcomer PR acceptance — 0/1 first-time contributors' PRs merged in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/16 approved changesets -- score normalized to 0
Inputs used
merged_prs120
open_issues1
closed_issues289
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d1
issue_closed_ratio0.997
closed_unmerged_prs35
first_time_authors_30d1
first_time_prs_merged_30d0
first_time_prs_decided_30d1

Ownership & stewardship

89Excellent
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
15.5/25Owner reach — 144 followers of nodemailer
23.8/25Track record — 41 public repos, account ~10 yr old
Inputs used
followers144
owner_typeOrganization
is_verifiedyes
owner_loginnodemailer
public_repos41
account_age_days3,914

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on npm
35/35Publish recency — latest publish 2 days ago
20/20Version history — 145 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesmailparser
ecosystemsnpm
any_deprecatedno
min_days_since_publish2

Engineering Quality

Are baseline engineering and documentation practices in place?

58Moderate · 19% of overall

Engineering practices

64Moderate
How it's scored
24/24CI workflows — 3 workflow(s)
24/24Tests present
16/16Linter config — .eslintrc, eslint.config.js
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — 0 out of 14 merged PRs checked by a CI test -- score normalized to 0
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

50Moderate
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 2 topics
0/10Wiki
Inputs used
topicsmailparser, mime
has_wikino
homepage—
docs_site—
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

56Moderate · 16% of overall

Security posture

45Weak
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
0/2.5CI-Tests — 0 out of 14 merged PRs checked by a CI test -- score normalized to 0
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/16 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 6 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
0/7.5Dependency-Update-Tool — no update tool detected
0/5Fuzzing — project is not fuzzed
2.2/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
1/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 2
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities — 22 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate4.5
Excluded from scoring (no data or not applicable): Branch-Protection, 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_packages27
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:mailparser@3.9.28 runtime dependency closure — what installing the published package pulls in — 27 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.

69Good · 4% of overall

Agent context & guidance

85Excellent
How it's scored
45/45Agent instructions — CLAUDE.md
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 53 of 61 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.869
agent_instruction_filesCLAUDE.md
agent_instruction_max_bytes8,427

Verify loop (build / test / typecheck)

51Moderate
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .eslintrc, eslint.config.js
0/11Static type checking
10/10Reproducible environment — lockfile
6/10Demonstrated agent practice — 3 of the last 100 commits agent-authored or agent-credited
0/8Automated maintenance — no automated dependency updates observed
2/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 2
Inputs used
has_nixno
has_testsyes
lockfilespackage-lock.json
has_dockerfileno
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share0.03
toolchain_manifests—
dependency_bot_commit_share0

Code legibility for models

53Moderate
How it's scored
0/45Type-checkable code — JavaScript without a type-check config
53.1/55Manageable file sizes — 1/29 source files over 60KB
Inputs used
primary_languageJavaScript
largest_source_bytes68,559
source_files_sampled29
oversized_source_files1

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

1,670GitHub stars
60contributors
81commits, last 12 months
2days since last push
41releases
1bus factor
1open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

More detail

Star and fork history 0 ★ / 288 ⇿
0Stars
288Forks
32Releases

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.

05010015020025030027872011-032018-122026-09
Major 0Minor 2Patch 28

Each point covers 15 days.

OpenSSF Scorecard 4.5 / 10
4.5aggregate

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 · 2026-09-17 21:54 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
0CI-Tests0 out of 14 merged PRs checked by a CI test -- score normalized to 0
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/16 approved changesets -- score normalized to 0
10Contributorsproject has 6 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
9Licenselicense file detected
10Maintained30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
2Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 2
0SASTSAST tool is not run on all commits -- score normalized to 0
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities22 existing vulnerabilities detected
Direct dependencies 10
RegistryPackageVersion constraintManifest
npmencoding-japanese2.4.0package.json
npmhe1.2.0package.json
npmhtml-to-text10.0.1package.json
npmiconv-lite0.7.3package.json
npmlibmime5.4.4package.json
npmlinkify-it5.0.2package.json
npm@zone-eu/mailsplit5.4.17package.json
npmnodemailer10.0.10package.json
npmpunycode.js2.3.1package.json
npmtlds1.261.0package.json
All dependencies 477

Full resolved dependency set from the GitHub dependency graph: 11 direct and 466 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npm@zone-eu/mailsplit5.4.17direct
npmencoding-japanese2.4.0direct
npmhe1.2.0direct
npmhtml-to-text10.0.1direct
npmiconv-lite0.6.3direct
npmiconv-lite0.7.3direct
npmlibmime5.4.4direct
npmlinkify-it5.0.2direct
npmnodemailer10.0.10direct
npmpunycode.js2.3.1direct
npmtlds1.261.0direct
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npm@babel/helper-environment-visitor7.22.20indirect
npm@babel/helper-function-name7.23.0indirect
npm@babel/helper-globals7.29.7indirect
npm@babel/helper-hoist-variables7.22.5indirect
npm@babel/helper-module-imports7.22.15indirect
npm@babel/helper-module-imports7.29.7indirect
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npmgrunt-legacy-util2.0.2indirect
npmhas-flag3.0.0indirect
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npmhasha5.2.2indirect
npmhashery1.5.1indirect
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npmhomedir-polyfill1.0.3indirect
npmhooker0.2.3indirect
npmhookified1.15.1indirect
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npmhtml-escaper2.0.2indirect
npmhtmlparser210.1.0indirect
npmiconv3.0.1indirect
npmignore5.3.2indirect
npmimport-fresh3.3.1indirect
npmimurmurhash0.1.4indirect
npmindent-string4.0.0indirect
npminflight1.0.6indirect
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npmini1.3.8indirect
npmink3.2.0indirect
npminterpret1.1.0indirect
npmis-absolute1.0.0indirect
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npmis-core-module2.16.2indirect
npmis-extglob2.1.1indirect
npmis-fullwidth-code-point3.0.0indirect
npmis-glob4.0.3indirect
npmis-number7.0.0indirect
npmis-plain-object2.0.4indirect
npmis-relative1.0.0indirect
npmis-stream2.0.1indirect
npmis-typedarray1.0.0indirect
npmis-unc-path1.0.0indirect
npmis-windows1.0.2indirect
npmisexe2.0.0indirect
npmisobject3.0.1indirect
npmistanbul-lib-coverage3.2.2indirect
npmistanbul-lib-hook3.0.0indirect
npmistanbul-lib-instrument4.0.3indirect
npmistanbul-lib-processinfo2.0.3indirect
npmistanbul-lib-report3.0.1indirect
npmistanbul-lib-source-maps4.0.1indirect
npmistanbul-reports3.2.0indirect
npmjackspeak1.4.2indirect
npmjake10.9.4indirect
npmjs-tokens4.0.0indirect
npmjs-yaml3.15.2indirect
npmjs-yaml4.3.2indirect
npmjsesc2.5.2indirect
npmjsesc3.1.0indirect
npmjson-schema-traverse0.4.1indirect
npmjson-schema-traverse1.0.0indirect
npmjson-stable-stringify-without-jsonify1.0.1indirect
npmjson52.2.3indirect
npmkeyv5.6.0indirect
npmkind-of6.0.3indirect
npmleac0.7.0indirect
npmlevn0.4.1indirect
npmlibbase641.3.0indirect
npmlibqp2.1.1indirect
npmlibtap1.4.1indirect
npmliftup3.0.1indirect
npmlocate-path5.0.0indirect
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npmlodash4.17.21indirect
npmlodash4.18.1indirect
npmlodash.flattendeep4.4.0indirect
npmloose-envify1.4.0indirect
npmlru-cache5.1.1indirect
npmmake-dir3.1.0indirect
npmmake-dir4.0.0indirect
npmmake-iterator1.0.1indirect
npmmap-cache0.2.2indirect
npmmicromatch4.0.8indirect
npmmimic-fn2.1.0indirect
npmminimatch10.2.6indirect
npmminimatch3.1.2indirect
npmminimatch3.1.5indirect
npmminimatch5.1.9indirect
npmminimist0.0.8indirect
npmminipass3.3.6indirect
npmmkdirp0.5.1indirect
npmmkdirp1.0.4indirect
npmms2.1.2indirect
npmms2.1.3indirect
npmnatural-compare1.4.0indirect
npmnode-preload0.2.1indirect
npmnode-releases2.0.14indirect
npmnode-releases2.0.55indirect
npmnodeunit-x0.16.0indirect
npmnopt5.0.0indirect
npmnormalize-path3.0.0indirect
npmnyc15.1.0indirect
npmobject-assign4.1.1indirect
npmobject.defaults1.1.0indirect
npmobject.map1.0.1indirect
npmobject.pick1.3.0indirect
npmonce1.4.0indirect
npmonetime5.1.2indirect
npmopener1.5.2indirect
npmoptionator0.9.4indirect
npmown-or1.0.0indirect
npmown-or-env1.0.2indirect
npmp-limit2.3.0indirect
npmp-limit3.1.0indirect
npmp-locate4.1.0indirect
npmp-locate5.0.0indirect
npmp-map3.0.0indirect
npmp-try2.2.0indirect
npmpackage-hash4.0.0indirect
npmparent-module1.0.1indirect
npmparse-filepath1.0.2indirect
npmparse-passwd1.0.0indirect
npmparseley0.13.1indirect
npmpatch-console1.0.0indirect
npmpath-exists4.0.0indirect
npmpath-is-absolute1.0.1indirect
npmpath-key3.1.1indirect
npmpath-parse1.0.7indirect
npmpath-root0.1.1indirect
npmpath-root-regex0.1.2indirect
npmpeberminta0.10.0indirect
npmpicocolors1.0.0indirect
npmpicocolors1.1.1indirect
npmpicomatch2.3.2indirect
npmpkg-dir4.2.0indirect
npmprelude-ls1.2.1indirect
npmprettier3.9.6indirect
npmprocess-on-spawn1.1.0indirect
npmpunycode2.3.1indirect
npmqified0.10.1indirect
npmrandom-message1.1.0indirect
npmreact17.0.2indirect
npmreact-devtools-core4.28.5indirect
npmreact-reconciler0.26.2indirect
npmreaddirp3.6.0indirect
npmrechoir0.7.1indirect
npmredeyed2.1.1indirect
npmrelease-zalgo1.0.0indirect
npmrequire-directory2.1.1indirect
npmrequire-from-string2.0.2indirect
npmrequire-main-filename2.0.0indirect
npmresolve1.22.12indirect
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npmrestore-cursor3.1.0indirect
npmrimraf3.0.2indirect
npmsafer-buffer2.1.2indirect
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npmselderee0.12.0indirect
npmsemver6.3.1indirect
npmsemver7.8.5indirect
npmset-blocking2.0.0indirect
npmshebang-command2.0.0indirect
npmshebang-regex3.0.0indirect
npmshell-quote1.8.1indirect
npmsignal-exit3.0.7indirect
npmslice-ansi3.0.0indirect
npmsource-map0.6.1indirect
npmsource-map-support0.5.21indirect
npmspawn-wrap2.0.0indirect
npmsprintf-js1.0.3indirect
npmsprintf-js1.1.3indirect
npmstack-utils2.0.6indirect
npmstring-width4.2.3indirect
npmstrip-ansi6.0.1indirect
npmstrip-bom4.0.0indirect
npmstrip-json-comments3.1.1indirect
npmsupports-color5.5.0indirect
npmsupports-color7.2.0indirect
npmsupports-preserve-symlinks-flag1.0.0indirect
npmtap16.3.10indirect
npmtap-mocha-reporter5.0.4indirect
npmtap-parser11.0.2indirect
npmtap-yaml1.0.2indirect
npmtcompare5.0.7indirect
npmtest-exclude6.0.0indirect
npmto-fast-properties2.0.0indirect
npmto-regex-range5.0.1indirect
npmtreport3.0.4indirect
npmtrivial-deferred1.1.2indirect
npmtype-check0.4.0indirect
npmtype-fest0.12.0indirect
npmtype-fest0.21.3indirect
npmtype-fest0.8.1indirect
npmtypedarray-to-buffer3.1.5indirect
npmuc.micro2.1.0indirect
npmunc-path-regex0.1.2indirect
npmunderscore.string3.3.6indirect
npmunicode-length2.1.0indirect
npmupdate-browserslist-db1.0.13indirect
npmupdate-browserslist-db1.3.3indirect
npmuri-js4.4.1indirect
npmutil-deprecate1.0.2indirect
npmuuid8.3.2indirect
npmv8flags4.0.1indirect
npmwhich1.3.1indirect
npmwhich2.0.2indirect
npmwhich-module2.0.1indirect
npmwidest-line3.1.0indirect
npmword-wrap1.2.5indirect
npmwrap-ansi6.2.0indirect
npmwrap-ansi7.0.0indirect
npmwrappy1.0.2indirect
npmwrite-file-atomic3.0.3indirect
npmws7.5.9indirect
npmy18n4.0.3indirect
npmyallist3.1.1indirect
npmyallist4.0.0indirect
npmyaml1.10.2indirect
npmyaml1.10.3indirect
npmyargs15.4.1indirect
npmyargs-parser18.1.3indirect
npmyocto-queue0.1.0indirect
npmyoga-layout-prebuilt1.10.0indirect
Dependency advisories 0

Installing npm:mailparser@3.9.28 pulls in 27 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

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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.