Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-08-28 03:13 UTC

python-trio / trio

Trio – a friendly Python library for async concurrency and I/O

PythonCustom license★ 7,308 stars⑂ 415 forkssince Jan 2017View on GitHub ↗
KindPluginLibraryhow this is determined
#python#async#async-await#networking#io#trio#structured-concurrency

python-trio/trio holds a health index of 98 out of 100, placing it in the Exceptional band. It scores highest on Vitality (96/100) and lowest on AI Readiness (56/100). It was last updated today. 3 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

python-trioOrganization
148 followers32 public repossince Mar 2017

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
PyPItrio0.34.054,373,9894417 days agoasyncionetworkingtrio

Metrics by category

Vitality

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

96Exceptional · 21% of overall

Development activity

99Exceptional
How it's scored
36/36Push recency — last push 0 days ago
35.3/36Commit cadence — 51/52 weeks with commits
18/18Commit volume — 176 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_year176
human_commit_share0.58
days_since_last_push0
active_weeks_last_year51

Release discipline

92Excellent
How it's scored
27/27Ships releases — 18 releases published
36/36Release recency — latest release 17 days ago
19.8/27Release cadence — a release every ~81.8 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count18
latest_release_tagv0.34.0
releases_from_tagsno
days_since_latest_release17
mean_days_between_releases81.8
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?

89Excellent · 17% of overall

Popularity & adoption

92Excellent
How it's scored
60/60Stars — 7,308 stars
21.8/25Forks — 415 forks
10.5/15Watchers — 78 watchers
Inputs used
forks415
stars7,308
watchers78
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

79Good
How it's scored
22.5/22.5README
16.9/22.5License — license file present, not a recognized license
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges6
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_servicescodecov.io, shields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

100Exceptional
How it's scored
80/80Monthly downloads — 54,373,989 downloads/month across pypi
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagestrio
dependents—
ecosystemspypi
total_downloads—
monthly_downloads54,373,989
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?

78Good · 23% of overall

Maintainer resilience (bus factor)

74Good
How it's scored
36/54Bus factor — 3 contributor(s) cover half of all commits
14.8/22.5Commit distribution — top contributor authored 34% of commits
13.5/13.5Contributor breadth — 95 contributors
10/10OpenSSF Scorecard: Contributors — project has 93 contributing companies or organizations
Inputs used
bus_factor3
contributors_sampled95
top_contributor_share0.34

Issue & PR responsiveness

73Good
How it's scored
29.1/42Issue resolution — 69% of issues closed
25.4/30PR acceptance — 2,157/2,546 decided PRs merged
5.2/13Newcomer PR acceptance — 2/5 first-time contributors' PRs merged in 30d
13.5/15OpenSSF Scorecard: Code-Review — Found 10/11 approved changesets -- score normalized to 9
Inputs used
merged_prs2,157
open_issues277
closed_issues622
prs_merged_7d0
prs_decided_7d1
prs_merged_30d5
prs_decided_30d9
issue_closed_ratio0.692
closed_unmerged_prs389
first_time_authors_30d5
first_time_prs_merged_30d2
first_time_prs_decided_30d5

Ownership & stewardship

69Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
15.6/25Owner reach — 148 followers of python-trio
23.1/25Track record — 32 public repos, account ~9 yr old
Inputs used
followers148
owner_typeOrganization
is_verifiedno
owner_loginpython-trio
public_repos32
account_age_days3,457

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on pypi
35/35Publish recency — latest publish 17 days ago
20/20Version history — 44 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagestrio
ecosystemspypi
any_deprecatedno
min_days_since_publish17

Engineering Quality

Are baseline engineering and documentation practices in place?

96Exceptional · 19% of overall

Engineering practices

94Exceptional
How it's scored
24/24CI workflows — 4 workflow(s)
24/24Tests present
16/16Linter config — pyproject.toml ([tool.ruff], [tool.black]), tox.ini
9.6/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 19 out of 19 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

100Exceptional
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://trio.readthedocs.io
10/10Repository description
10/10Topics — 7 topics
10/10Wiki
Inputs used
topicspython, async, async-await, networking, io, trio, structured-concurrency
has_wikiyes
homepagehttps://trio.readthedocs.io
docs_sitehttps://trio.readthedocs.io
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

74Good · 16% of overall

Security posture

68Good
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
2.2/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5CI-Tests — 19 out of 19 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
6.8/7.5Code-Review — Found 10/11 approved changesets -- score normalized to 9
2.5/2.5Contributors — project has 93 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
2.2/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
1/5SAST — SAST tool is not run on all commits -- score normalized to 2
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
6.8/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
4.5/7.5Vulnerabilities — 4 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate6.8
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_packages5
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:trio@0.34.0 runtime dependency closure — what installing the published package pulls in — 5 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.

56Moderate · 4% of overall

Agent context & guidance

32At Risk
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
32.2/40Legible commit history — 35 of 58 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.603
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

64Moderate
How it's scored
18/18One-command bootstrap — docs/Makefile
22/22Automated tests
11/11Lint / format config — pyproject.toml ([tool.ruff], [tool.black]), tox.ini
11/11Static type checking — src/trio/py.typed
0/10Reproducible environment
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
0/8Automated maintenance — no automated dependency updates observed
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_filesdocs/Makefile
has_devcontainerno
has_linter_configyes
typecheck_configssrc/trio/py.typed
agent_commit_share0.01
toolchain_manifests—
dependency_bot_commit_share0

Code legibility for models

81Excellent
How it's scored
27/45Type-checkable code — Python with type-check config (src/trio/py.typed)
54.3/55Manageable file sizes — 2/162 source files over 60KB
Inputs used
primary_languagePython
largest_source_bytes129,134
source_files_sampled162
oversized_source_files2

Key facts

7,308GitHub stars
95contributors
176commits, last 12 months
0days since last push
18releases
3bus factor
277open 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 ★ / 415 ⇿
0Stars
415Forks
18Releases

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.

010020030040050041272017-032021-112026-08
Major 0Minor 12Patch 6

Each point covers 9 days.

OpenSSF Scorecard 6.8 / 10
6.8aggregate

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 · 2026-08-28 03:13 UTC

10Binary-Artifactsno binaries found in the repo
3Branch-Protectionbranch protection is not maximal on development and all release branches
10CI-Tests19 out of 19 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
9Code-ReviewFound 10/11 approved changesets -- score normalized to 9
10Contributorsproject has 93 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
9Licenselicense file detected
10Maintained30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
2SASTSAST tool is not run on all commits -- score normalized to 2
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
9Token-Permissionsdetected GitHub workflow tokens with excessive permissions
6Vulnerabilities4 existing vulnerabilities detected
Direct dependencies 7
RegistryPackageVersion constraintManifest
PyPIattrs>= 23.2.0pyproject.toml
PyPIsortedcontainers—pyproject.toml
PyPIidna—pyproject.toml
PyPIoutcome—pyproject.toml
PyPIsniffio>= 1.3.0pyproject.toml
PyPIcffi>=1.14pyproject.toml
PyPIexceptiongroup—pyproject.toml
All dependencies 88

Full resolved dependency set from the GitHub dependency graph: 10 direct and 78 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
PyPIattrs—direct
PyPIattrs26.1.0direct
PyPIcffi—direct
PyPIcffi2.0.0direct
PyPIexceptiongroup1.3.1direct
PyPIidna3.18direct
PyPIoutcome1.3.0.post0direct
PyPIsniffio—direct
PyPIsniffio1.3.1direct
PyPIsortedcontainers2.4.0direct
PyPIalabaster1.0.0indirect
PyPIast-serialize0.6.0indirect
PyPIastor0.8.1indirect
PyPIastroid4.0.4indirect
PyPIasync-generator1.10indirect
PyPIbabel2.18.0indirect
PyPIbeautifulsoup44.15.0indirect
PyPIblack26.5.1indirect
PyPIcertifi2026.7.22indirect
PyPIcfgv3.5.0indirect
PyPIcharset-normalizer3.4.9indirect
PyPIclick8.4.2indirect
PyPIcodespell2.4.3indirect
PyPIcolorama0.4.6indirect
PyPIcoverage7.15.2indirect
PyPIcryptography48.0.0indirect
PyPIdill0.4.1indirect
PyPIdistlib0.4.3indirect
PyPIdocutils0.22.4indirect
PyPIfilelock3.32.2indirect
PyPIidentify2.6.19indirect
PyPIimagesize2.0.0indirect
PyPIimmutables0.21indirect
PyPIiniconfig2.3.0indirect
PyPIisort8.0.1indirect
PyPIjedi0.20.0indirect
PyPIjinja23.1.6indirect
PyPIlibrt0.13.0indirect
PyPImarkupsafe3.0.3indirect
PyPImccabe0.7.0indirect
PyPImypy2.3.0indirect
PyPImypy-extensions1.1.0indirect
PyPInodeenv1.10.0indirect
PyPIpackaging26.2indirect
PyPIparso0.8.7indirect
PyPIpathspec1.1.1indirect
PyPIplatformdirs4.11.0indirect
PyPIpluggy1.6.0indirect
PyPIpre-commit4.6.1indirect
PyPIpycparser3.0indirect
PyPIpygments2.20.0indirect
PyPIpylint4.0.6indirect
PyPIpyopenssl26.2.0indirect
PyPIpyright1.1.411indirect
PyPIpytest9.1.1indirect
PyPIpython-discovery1.5.1indirect
PyPIpytokens0.4.1indirect
PyPIpyyaml6.0.3indirect
PyPIrequests2.34.2indirect
PyPIroman-numerals4.1.0indirect
PyPIruff0.16.4indirect
PyPIsetuptools—indirect
PyPIsnowballstemmer3.1.1indirect
PyPIsoupsieve2.9.1indirect
PyPIsphinx9.0.4indirect
PyPIsphinx9.1.0indirect
PyPIsphinx-codeautolink0.19.0indirect
PyPIsphinx-rtd-theme3.1.0indirect
PyPIsphinxcontrib-applehelp2.0.0indirect
PyPIsphinxcontrib-devhelp2.0.0indirect
PyPIsphinxcontrib-htmlhelp2.1.0indirect
PyPIsphinxcontrib-jquery4.1indirect
PyPIsphinxcontrib-jsmath1.0.1indirect
PyPIsphinxcontrib-qthelp2.0.0indirect
PyPIsphinxcontrib-serializinghtml2.0.0indirect
PyPIsphinxcontrib-trio1.2.0indirect
PyPItomlkit0.15.1indirect
PyPItowncrier25.8.0indirect
PyPItrustme1.2.1indirect
PyPItypes-cffi2.0.0.20260518indirect
PyPItypes-docutils0.22.3.20260724indirect
PyPItypes-pyopenssl24.1.0.20240722indirect
PyPItypes-pyyaml6.0.12.20260724indirect
PyPItypes-setuptools83.0.0.20260724indirect
PyPItyping-extensions4.16.0indirect
PyPIurllib32.7.0indirect
PyPIuv0.12.5indirect
PyPIvirtualenv21.7.1indirect
Dependency advisories 0

Installing pypi:trio@0.34.0 pulls in 5 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.