Public record
Software health reportschema 0.11.0 · metrics 2.10.0 · 2026-07-17 12:02 UTC

roberthead / head_music

Ruby gem for the rudiments of western music theory.

RubyMIT★ 7 stars⑂ 1 forksince Feb 2017View on GitHub ↗
KindLibraryhow this is determined
#music-theory#rubygems#music-analysis#counterpoint

roberthead/head_music holds a health index of 65 out of 100, placing it in the Good band. It scores highest on Vitality (82/100) and lowest on Sustainability & Governance (41/100). It was last updated today. A single contributor accounts for most of its recent work.

65
overall / 100
Good

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.

65
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 60 is calibrated to 65 on the published index scale (record calibration 2026-08-02).

Ownership

Rob HeadPersonal account
31 followers61 public repossince Jul 2008Robinloft LLC

This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
RubyGemshead_music15.2.0-1110 days ago

Metrics by category

Vitality

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

82Excellent · 21% of overall

Development activity

77Good
How it's scored
36/36Push recency — last push 0 days ago
13.2/36Commit cadence — 19/52 weeks with commits
18/18Commit volume — 248 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_year248
human_commit_share—
days_since_last_push0
active_weeks_last_year19

Release discipline

90Excellent
How it's scored
27/27Ships releases — 10 releases published
36/36Release recency — latest release 0 days ago
27/27Release cadence — a release every ~39.5 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count10
latest_release_tagv15.2.0
releases_from_tagsno
days_since_latest_release0
mean_days_between_releases39.5

Community & Adoption

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

54Moderate · 17% of overall

Popularity & adoption

13Critical
How it's scored
12.6/60Stars — 7 stars
0/25Forks — 1 forks
0/15Watchers — 1 watchers
Inputs used
forks1
stars7
watchers1
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_badges—
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_services—
has_pull_request_templateyes

Ecosystem adoption (downloads)

67Good
How it's scored
53.5/80Total downloads — 141,140 downloads all-time across rubygems
0/20Registry dependents — not reported by this ecosystem
Inputs used
packageshead_music
dependents—
ecosystemsrubygems
total_downloads141,140
monthly_downloads—
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?

41Weak · 23% of overall

Maintainer resilience (bus factor)

13Critical
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
0/22.5Commit distribution — top contributor authored 100% of commits
1.4/13.5Contributor breadth — 1 contributors
3/10OpenSSF Scorecard: Contributors — project has 1 contributing companies or organizations -- score normalized to 3
Inputs used
bus_factor1
contributors_sampled1
top_contributor_share1

Issue & PR responsiveness

10Critical
How it's scored
0/42Issue resolution — no issues or no data
4.3/30PR acceptance — 2/14 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/30 approved changesets -- score normalized to 0
Inputs used
merged_prs2
open_issues0
closed_issues0
prs_merged_7d—
prs_decided_7d—
prs_merged_30d—
prs_decided_30d—
issue_closed_ratio—
closed_unmerged_prs12
first_time_authors_30d—
first_time_prs_merged_30d—
first_time_prs_decided_30d—
Excluded from scoring (no data or not applicable): Issue resolution, Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

57Moderate
How it's scored
10/30Ownership backing — personal (user) account
0/20Verified domain — not applicable to user accounts
10.8/25Owner reach — 31 followers of roberthead
25/25Track record — 61 public repos, account ~17 yr old
Inputs used
followers31
owner_typeUser
is_verified—
owner_loginroberthead
public_repos61
account_age_days6,569
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on rubygems
35/35Publish recency — latest publish 0 days ago
20/20Version history — 111 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packageshead_music
ecosystemsrubygems
any_deprecatedno
min_days_since_publish0

Engineering Quality

Are baseline engineering and documentation practices in place?

72Good · 19% of overall

Engineering practices

80Excellent
How it's scored
24/24CI workflows — 3 workflow(s)
24/24Tests present
16/16Linter config — .rubocop.yml
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — no data
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.

Documentation

60Moderate
How it's scored
30/30README
0/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
10/10Topics — 4 topics
10/10Wiki
Inputs used
topicsmusic-theory, rubygems, music-analysis, counterpoint
has_wikiyes
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?

48Weak · 16% of overall

Security posture

48Weak
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 — no data
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/30 approved changesets -- score normalized to 0
0.8/2.5Contributors — project has 1 contributing companies or organizations -- score normalized to 3
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 0 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 — no SAST tool detected
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_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate4.8
Excluded from scoring (no data or not applicable): Branch-Protection, CI-Tests, Packaging. Remaining weights renormalized.

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.

61Moderate · 4% of overall

Agent context & guidance

75Good
How it's scored
45/45Agent instructions — CLAUDE.md
0/15Machine-readable docs (llms.txt)
0/40Legible commit history — no data
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share—
agent_instruction_filesCLAUDE.md
agent_instruction_max_bytes6,499
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.

Verify loop (build / test / typecheck)

53Moderate
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .rubocop.yml
0/11Static type checking
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no data
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
lockfilesGemfile.lock
has_dockerfileno
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share—
toolchain_manifests—
dependency_bot_commit_share0
Excluded from scoring (no data or not applicable): Demonstrated agent practice. Remaining weights renormalized.

Code legibility for models

55Moderate
How it's scored
0/45Type-checkable code — Ruby without a type-check config
55/55Manageable file sizes — 0/424 source files over 60KB
Inputs used
primary_languageRuby
largest_source_bytes31,700
source_files_sampled424
oversized_source_files0

Key facts

7GitHub stars
1contributors
248commits, last 12 months
0days since last push
10releases
1bus factor
0open issues
RubyGemspackage ecosystems

More detail

OpenSSF Scorecard 4.8 / 10
4.8aggregate

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 · 2026-07-17 12:02 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
n/aCI-Testsno pull request found
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/30 approved changesets -- score normalized to 0
3Contributorsproject has 1 contributing companies or organizations -- score normalized to 3
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 0 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
0SASTno SAST tool detected
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 2
RegistryPackageVersion constraintManifest
RubyGemsactivesupport—Gemfile
RubyGemsstandard—Gemfile
All dependencies 87

Full resolved dependency set from the GitHub dependency graph: 3 direct and 84 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
RubyGemsactivesupport—direct
RubyGemsactivesupport8.1.3direct
RubyGemsstandard1.50.0direct
RubyGemsaddressable2.9.0indirect
RubyGemsast2.4.3indirect
RubyGemsaxiom-types0.1.1indirect
RubyGemsbase640.3.0indirect
RubyGemsbigdecimal3.2.2indirect
RubyGemsbundler-audit—indirect
RubyGemsbundler-audit0.9.2indirect
RubyGemschildprocess5.1.0indirect
RubyGemscoercible1.0.0indirect
RubyGemsconcurrent-ruby1.3.7indirect
RubyGemsconnection_pool2.5.3indirect
RubyGemsdescendants_tracker0.0.4indirect
RubyGemsdiff-lcs1.6.2indirect
RubyGemsdocile1.4.1indirect
RubyGemsdrb2.2.3indirect
RubyGemsdry-configurable1.3.0indirect
RubyGemsdry-core1.1.0indirect
RubyGemsdry-inflector1.2.0indirect
RubyGemsdry-initializer3.2.0indirect
RubyGemsdry-logic1.6.0indirect
RubyGemsdry-schema1.14.1indirect
RubyGemsdry-types1.8.3indirect
RubyGemserubi1.13.1indirect
RubyGemsflay2.13.3indirect
RubyGemsflog4.8.0indirect
RubyGemshumanize—indirect
RubyGemshumanize2.5.1indirect
RubyGemsi18n—indirect
RubyGemsi18n1.14.7indirect
RubyGemsice_nine0.11.2indirect
RubyGemsjson2.13.1indirect
RubyGemskramdown2.5.1indirect
RubyGemslanguage_server-protocol3.17.0.5indirect
RubyGemslaunchy3.1.1indirect
RubyGemslint_roller1.1.0indirect
RubyGemslogger1.7.0indirect
RubyGemsminitest5.25.5indirect
RubyGemsparallel1.27.0indirect
RubyGemsparser3.3.9.0indirect
RubyGemspath_expander1.1.3indirect
RubyGemsprism1.4.0indirect
RubyGemspublic_suffix6.0.2indirect
RubyGemsracc1.8.1indirect
RubyGemsrainbow3.1.1indirect
RubyGemsrake—indirect
RubyGemsrake13.3.0indirect
RubyGemsreek6.5.0indirect
RubyGemsregexp_parser2.10.0indirect
RubyGemsrexml—indirect
RubyGemsrexml3.4.4indirect
RubyGemsrspec—indirect
RubyGemsrspec3.13.1indirect
RubyGemsrspec-core3.13.5indirect
RubyGemsrspec-expectations3.13.5indirect
RubyGemsrspec-its—indirect
RubyGemsrspec-its2.0.0indirect
RubyGemsrspec-mocks3.13.5indirect
RubyGemsrspec-support3.13.4indirect
RubyGemsrubocop1.75.8indirect
RubyGemsrubocop-ast1.46.0indirect
RubyGemsrubocop-performance1.25.0indirect
RubyGemsrubocop-rake0.7.1indirect
RubyGemsrubocop-rspec3.6.0indirect
RubyGemsruby-progressbar1.13.0indirect
RubyGemsruby_parser3.21.1indirect
RubyGemsrubycritic4.11.0indirect
RubyGemssecurerandom0.4.1indirect
RubyGemssexp_processor4.17.4indirect
RubyGemssimplecov0.22.0indirect
RubyGemssimplecov-html0.13.2indirect
RubyGemssimplecov_json_formatter0.1.4indirect
RubyGemsstandard-custom1.0.2indirect
RubyGemsstandard-performance1.8.0indirect
RubyGemsthor1.4.0indirect
RubyGemsthread_safe0.3.6indirect
RubyGemstty-which0.5.0indirect
RubyGemstzinfo2.0.6indirect
RubyGemsunicode-display_width3.1.4indirect
RubyGemsunicode-emoji4.0.4indirect
RubyGemsuri1.1.1indirect
RubyGemsvirtus2.0.0indirect
RubyGemsyard—indirect
RubyGemsyard0.9.44indirect
RubyGemszeitwerk2.7.3indirect
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 v0.11.0 — full methodology · metrics wiki.

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