Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-25 23:53 UTC

meltano / sdk

Write 70% less code by using the SDK to build custom extractors and loaders that adhere to the Singer standard: https://sdk.meltano.com

PythonApache-2.0★ 119 stars⑂ 105 forkssince Jun 2021View on GitHub ↗
KindPluginLibraryCommand-line toolhow this is determined
#sdk#python

meltano/sdk holds a health index of 95 out of 100, placing it in the Exceptional band. It scores highest on Vitality (96/100) and lowest on Sustainability & Governance (66/100). It was last updated today. A single contributor accounts for most of its recent work.

95
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.

95
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 82 is calibrated to 95 on the published index scale (record calibration 2026-08-02).

Ownership

MeltanoOrganization
192 followers74 public repossince Oct 2018

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
PyPIsinger-sdk0.54.62,024,77941010 days agoeltmeltanomeltano-sdksingersinger-sdk

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 — 578 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_year578
human_commit_share0.61
days_since_last_push0
active_weeks_last_year52

Release discipline

90Excellent
How it's scored
27/27Ships releases — 100 releases published
27/36Release recency — latest release 101 days ago
27/27Release cadence — a release every ~22.1 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tagv0.54.5
releases_from_tagsno
days_since_latest_release101
mean_days_between_releases22.1
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?

76Good · 17% of overall

Popularity & adoption

52Moderate
How it's scored
33.6/60Stars — 119 stars
16.8/25Forks — 105 forks
1.7/15Watchers — 3 watchers
Inputs used
forks105
stars119
watchers3
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
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
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges7
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_servicesshields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 2,024,779 downloads/month across pypi
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagessinger-sdk
dependents—
ecosystemspypi
total_downloads—
monthly_downloads2,024,779
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?

66Good · 23% of overall

Maintainer resilience (bus factor)

38Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
5.6/22.5Commit distribution — top contributor authored 75% of commits
13.5/13.5Contributor breadth — 76 contributors
10/10OpenSSF Scorecard: Contributors — project has 11 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled76
top_contributor_share0.751

Issue & PR responsiveness

67Good
How it's scored
38.1/42Issue resolution — 91% of issues closed
27.3/30PR acceptance — 2,258/2,483 decided PRs merged
0/13Newcomer PR acceptance — 0/2 first-time contributors' PRs merged in 30d
1.5/15OpenSSF Scorecard: Code-Review — Found 4/25 approved changesets -- score normalized to 1
Inputs used
merged_prs2,258
open_issues115
closed_issues1,102
prs_merged_7d4
prs_decided_7d4
prs_merged_30d16
prs_decided_30d33
issue_closed_ratio0.906
closed_unmerged_prs225
first_time_authors_30d2
first_time_prs_merged_30d0
first_time_prs_decided_30d2

Ownership & stewardship

71Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
16.4/25Owner reach — 192 followers of meltano
25/25Track record — 74 public repos, account ~7 yr old
Inputs used
followers192
owner_typeOrganization
is_verifiedno
owner_loginmeltano
public_repos74
account_age_days2,914

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on pypi
35/35Publish recency — latest publish 10 days ago
20/20Version history — 410 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagessinger-sdk
ecosystemspypi
any_deprecatedno
min_days_since_publish10

Engineering Quality

Are baseline engineering and documentation practices in place?

92Excellent · 19% of overall

Engineering practices

94Exceptional
How it's scored
24/24CI workflows — 9 workflow(s)
24/24Tests present
16/16Linter config — pyproject.toml ([tool.ruff]), ruff.toml, tox.ini
9.6/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 23 out of 23 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configyes

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://sdk.meltano.com
10/10Repository description
10/10Topics — 2 topics
0/10Wiki
Inputs used
topicssdk, python
has_wikino
homepagehttps://sdk.meltano.com
docs_sitehttps://sdk.meltano.com
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

82Excellent · 16% of overall

Security posture

77Good
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0.8/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5CI-Tests — 23 out of 23 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
0.8/7.5Code-Review — Found 4/25 approved changesets -- score normalized to 1
2.5/2.5Contributors — project has 11 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
5/5Packaging — packaging workflow detected
5/5Pinned-Dependencies — all dependencies are pinned
5/5SAST — SAST tool is 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
6/7.5Vulnerabilities — 2 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate7.7
Excluded from scoring (no data or not applicable): 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_packages26
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 pypi:singer-sdk@0.54.6 runtime dependency closure — what installing the published package pulls in — 26 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.

90Excellent · 4% of overall

Agent context & guidance

85Excellent
How it's scored
45/45Agent instructions — CLAUDE.md, cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/AGENTS.md, cookiecutter/tap-template/{{cookiecutter.tap_id}}/AGENTS.md, cookiecutter/target-template/{{cookiecutter.target_id}}/AGENTS.md
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 61 of 61 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share1
agent_instruction_filesCLAUDE.md, cookiecutter/mapper-template/{{cookiecutter.mapper_id}}/AGENTS.md, cookiecutter/tap-template/{{cookiecutter.tap_id}}/AGENTS.md, cookiecutter/target-template/{{cookiecutter.target_id}}/AGENTS.md
agent_instruction_max_bytes15,001

Verify loop (build / test / typecheck)

92Excellent
How it's scored
18/18One-command bootstrap — noxfile.py
22/22Automated tests
11/11Lint / format config — pyproject.toml ([tool.ruff]), ruff.toml, tox.ini
11/11Static type checking — packages/meltano-mapper-custom/py.typed, packages/meltano-tap-countries/py.typed, packages/meltano-tap-csv/py.typed, packages/meltano-tap-dummyjson/py.typed, packages/meltano-tap-fake-people/py.typed, packages/meltano-tap-fundamentals/tap_fundamentals/py.typed, packages/meltano-tap-gitlab/py.typed, packages/meltano-tap-hostile/py.typed, packages/meltano-tap-sqlite/py.typed, packages/meltano-target-csv/py.typed, packages/meltano-target-parquet/py.typed, packages/meltano-target-sqlite/py.typed, singer_sdk/py.typed
10/10Reproducible environment — lockfile
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
8/8Automated maintenance — 37 of the last 100 commits are automated dependency updates
10/10OpenSSF Scorecard: Pinned-Dependencies — all dependencies are pinned
Inputs used
has_nixno
has_testsyes
lockfilesuv.lock
has_dockerfileno
typed_languageno
bootstrap_filesnoxfile.py
has_devcontainerno
has_linter_configyes
typecheck_configspackages/meltano-mapper-custom/py.typed, packages/meltano-tap-countries/py.typed, packages/meltano-tap-csv/py.typed, packages/meltano-tap-dummyjson/py.typed, packages/meltano-tap-fake-people/py.typed, packages/meltano-tap-fundamentals/tap_fundamentals/py.typed, packages/meltano-tap-gitlab/py.typed, packages/meltano-tap-hostile/py.typed, packages/meltano-tap-sqlite/py.typed, packages/meltano-target-csv/py.typed, packages/meltano-target-parquet/py.typed, packages/meltano-target-sqlite/py.typed, singer_sdk/py.typed
agent_commit_share0.01
toolchain_manifests—
dependency_bot_commit_share0.37

Code legibility for models

82Excellent
How it's scored
27/45Type-checkable code — Python with type-check config (packages/meltano-mapper-custom/py.typed, packages/meltano-tap-countries/py.typed, packages/meltano-tap-csv/py.typed, packages/meltano-tap-dummyjson/py.typed, packages/meltano-tap-fake-people/py.typed, packages/meltano-tap-fundamentals/tap_fundamentals/py.typed, packages/meltano-tap-gitlab/py.typed, packages/meltano-tap-hostile/py.typed, packages/meltano-tap-sqlite/py.typed, packages/meltano-target-csv/py.typed, packages/meltano-target-parquet/py.typed, packages/meltano-target-sqlite/py.typed, singer_sdk/py.typed)
54.8/55Manageable file sizes — 1/252 source files over 60KB
Inputs used
primary_languagePython
largest_source_bytes65,813
source_files_sampled252
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 — samples
Inputs used
example_dirssamples
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

119GitHub stars
76contributors
578commits, last 12 months
0days since last push
100releases
1bus factor
115open issues
PyPIpackage ecosystems

Data collection warnings

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

More detail

Star and fork history 0 ★ / 105 ⇿
0Stars
105Forks
100Releases

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.

02040608010012010572022-052024-072026-08
Major 0Minor 43Patch 57

Each point covers 4 days.

OpenSSF Scorecard 7.7 / 10
7.7aggregate

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 · 2026-09-25 23:53 UTC

10Binary-Artifactsno binaries found in the repo
1Branch-Protectionbranch protection is not maximal on development and all release branches
10CI-Tests23 out of 23 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
1Code-ReviewFound 4/25 approved changesets -- score normalized to 1
10Contributorsproject has 11 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
10Packagingpackaging workflow detected
10Pinned-Dependenciesall dependencies are pinned
10SASTSAST tool is run on all commits
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
10Token-PermissionsGitHub workflow tokens follow principle of least privilege
8Vulnerabilities2 existing vulnerabilities detected
Direct dependencies 20
RegistryPackageVersion constraintManifest
PyPIbackports-datetime-fromisoformat>=2.0.1pyproject.toml
PyPIclick>=8.2,<9pyproject.toml
PyPIfsspec>=2024.9.0pyproject.toml
PyPIimportlib-metadata>=6.5pyproject.toml
PyPIinflection>=0.5.1pyproject.toml
PyPIjoblib>=1.3.0pyproject.toml
PyPIjsonpath-ng>=1.5.3pyproject.toml
PyPIjsonschema>=4.16.0pyproject.toml
PyPIpackaging>=23.1pyproject.toml
PyPIpython-backoff>=2.2.2pyproject.toml
PyPIpython-dotenv>=0.20pyproject.toml
PyPIPyYAML>=6.0pyproject.toml
PyPIreferencing>=0.30.0pyproject.toml
PyPIrequests>=2.25.1pyproject.toml
PyPIsimpleeval==1.0.8pyproject.toml
PyPIsimplejson>=3.17.6pyproject.toml
PyPIsqlalchemy>=2pyproject.toml
PyPItyping-extensions>=4.5.0pyproject.toml
PyPIuniversal-pathlib>=0.2.6pyproject.toml
PyPIurllib3>=1.26.20pyproject.toml
All dependencies 147

Full resolved dependency set from the GitHub dependency graph: 22 direct and 125 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
PyPIbackports-datetime-fromisoformat2.0.3direct
PyPIclick8.5.0direct
PyPIfsspec2026.9.0direct
PyPIimportlib-metadata9.0.1direct
PyPIinflection0.5.1direct
PyPIjoblib1.6.0direct
PyPIjsonpath-ng1.8.0direct
PyPIjsonschema4.26.0direct
PyPIpackaging26.3direct
PyPIpython-backoff3.0.0direct
PyPIpython-dotenv1.2.3direct
PyPIpyyaml6.0.3direct
PyPIreferencing0.37.0direct
PyPIrequests—direct
PyPIrequests2.34.2direct
PyPIsimpleeval1.0.8direct
PyPIsimplejson4.1.2direct
PyPIsqlalchemy2.1.0direct
PyPIsqlalchemy2.1.0b3direct
PyPItyping-extensions4.16.0direct
PyPIuniversal-pathlib0.3.10direct
PyPIurllib32.8.0direct
PyPIaccessible-pygments0.0.5indirect
PyPIaiobotocore3.9.1indirect
PyPIaiohappyeyeballs2.7.1indirect
PyPIaiohttp3.14.3indirect
PyPIaioitertools0.13.0indirect
PyPIaiosignal1.4.0indirect
PyPIalabaster1.0.0indirect
PyPIast-serialize0.11.2indirect
PyPIasync-timeout5.0.1indirect
PyPIattrs26.1.0indirect
PyPIbabel2.18.0indirect
PyPIbackports-zstd1.7.0indirect
PyPIbcrypt5.0.0indirect
PyPIbeautifulsoup44.15.0indirect
PyPIbotocore1.43.75indirect
PyPIcattrs26.2.0indirect
PyPIcertifi2026.7.22indirect
PyPIcffi2.1.1indirect
PyPIcharset-normalizer3.5.1indirect
PyPIcloudpickle3.1.2indirect
PyPIcolorama0.4.6indirect
PyPIcoverage7.16.1indirect
PyPIcryptography50.0.1indirect
PyPIdeptry0.25.1indirect
PyPIdirty-equals0.11indirect
PyPIdocutils0.21.2indirect
PyPIdocutils0.22.4indirect
PyPIexceptiongroup1.3.1indirect
PyPIfaker—indirect
PyPIfaker40.39.0indirect
PyPIfastjsonschema2.22.2indirect
PyPIfrozenlist1.8.0indirect
PyPIfuro2025.12.19indirect
PyPIgriffecli—indirect
PyPIidna3.20indirect
PyPIimagesize2.0.1indirect
PyPIiniconfig2.3.0indirect
PyPIinvoke3.0.3indirect
PyPIjinja23.1.6indirect
PyPIjmespath1.1.0indirect
PyPIjsonschema-specifications2025.9.1indirect
PyPIlibrt0.15.0indirect
PyPImarkdown-it-py3.0.0indirect
PyPImarkdown-it-py4.2.0indirect
PyPImarkupsafe3.0.3indirect
PyPImdit-py-plugins0.6.1indirect
PyPImdurl0.1.2indirect
PyPImsgspec—indirect
PyPImsgspec0.21.1indirect
PyPImultidict6.9.1indirect
PyPImypy2.3.1indirect
PyPImypy-extensions1.1.0indirect
PyPImyst-parser4.0.1indirect
PyPImyst-parser5.1.0indirect
PyPInox2026.8.17indirect
PyPIparamiko5.0.0indirect
PyPIpathlib-abc0.5.2indirect
PyPIpathspec1.1.1indirect
PyPIplatformdirs4.11.12indirect
PyPIpluggy1.6.0indirect
PyPIprek0.5.3indirect
PyPIpropcache0.5.4indirect
PyPIpy-cpuinfo210.1.1indirect
PyPIpyarrow—indirect
PyPIpyarrow25.0.1indirect
PyPIpyarrow26.0.0.dev296indirect
PyPIpyarrow-stubs20.0.0.20260819indirect
PyPIpycparser3.0indirect
PyPIpygments2.21.0indirect
PyPIpyjwt2.15.0indirect
PyPIpynacl1.6.2indirect
PyPIpytest—indirect
PyPIpytest9.1.1indirect
PyPIpytest-benchmark5.3.0indirect
PyPIpytest-codspeed5.0.3indirect
PyPIpytest-github-actions-annotate-failures0.4.2indirect
PyPIpytest-snapshot0.9.0indirect
PyPIpython-dateutil2.9.0.post0indirect
PyPIpytz2026.4indirect
PyPIrequests-cache—indirect
PyPIrequests-cache1.3.3indirect
PyPIrequests-mock1.12.1indirect
PyPIrequirements-parser0.13.1indirect
PyPIresponses0.26.3indirect
PyPIrfc3339-validator0.1.4indirect
PyPIrich15.0.0indirect
PyPIroman-numerals4.1.0indirect
PyPIrpds-py0.30.0indirect
PyPIrpds-py2026.6.3indirect
PyPIs3fs—indirect
PyPIs3fs2026.9.0indirect
PyPIsinger-sdk—indirect
PyPIsix1.17.0indirect
PyPIsnowballstemmer3.1.1indirect
PyPIsoupsieve2.10indirect
PyPIsphinx8.1.3indirect
PyPIsphinx9.0.4indirect
PyPIsphinx9.1.0indirect
PyPIsphinx-basic-ng1.0.0b2indirect
PyPIsphinx-copybutton0.5.2indirect
PyPIsphinx-inline-tabs2025.12.21.14indirect
PyPIsphinx-notfound-page1.1.0indirect
PyPIsphinx-reredirects0.1.6indirect
PyPIsphinx-reredirects1.1.0indirect
PyPIsphinxcontrib-applehelp2.0.0indirect
PyPIsphinxcontrib-devhelp2.0.0indirect
PyPIsphinxcontrib-htmlhelp2.1.0indirect
PyPIsphinxcontrib-jsmath1.0.1indirect
PyPIsphinxcontrib-qthelp2.0.0indirect
PyPIsphinxcontrib-serializinghtml2.0.0indirect
PyPItime-machine3.5.1indirect
PyPItomli2.4.1indirect
PyPItoolz1.1.0indirect
PyPItwine7.0.0indirect
PyPIty0.0.81indirect
PyPItypes-jsonschema4.26.0.20260518indirect
PyPItypes-pytz2026.3.1.20260727indirect
PyPItypes-pyyaml6.0.12.20260906indirect
PyPItypes-simplejson4.1.0.20260724indirect
PyPItzdata2026.4indirect
PyPIurl-normalize3.0.1indirect
PyPIwrapt2.4.1indirect
PyPIxdoctest1.3.2indirect
PyPIyarl1.25.1indirect
PyPIzipp4.1.0indirect
Dependency advisories 0

Installing pypi:singer-sdk@0.54.6 pulls in 26 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 — PyPI.