Public record
Software health reportschema 0.30.0 · metrics 2.10.0 · 2026-08-04 17:18 UTC

Cysharp / ZLogger

Zero Allocation Text/Structured Logger for .NET with StringInterpolation and Source Generator, built on top of a Microsoft.Extensions.Logging.

C#MIT★ 1,746 stars⑂ 127 forkssince Mar 2020View on GitHub ↗

Cysharp/ZLogger holds a health index of 71 out of 100, placing it in the Good band. It scores highest on Sustainability & Governance (72/100) and lowest on Security (47/100). It was last updated 27 days ago. A single contributor accounts for most of its recent work.

71
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.

71
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 63 is calibrated to 71 on the published index scale (record calibration 2026-08-02).

Ownership

Cysharp, Inc.Organization
3,636 followers49 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
NuGetZLogger.MessagePack2.5.10-19575 days agologgingmessagepack
NuGetZLogger2.5.10-50575 days agologging

Metrics by category

Vitality

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

58Moderate · 21% of overall
How it's scored
28.8/36Push recencylast push 27 days ago
4.8/36Commit cadence7/52 weeks with commits
11.5/18Commit volume18 commits in the last year
7/10OpenSSF Scorecard: Maintained9 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 7
Inputs used
commits_last_year18
human_commit_share0.81
days_since_last_push27
active_weeks_last_year7
How it's scored
27/27Ships releases34 releases published
7.2/36Release recencylatest release 575 days ago
27/27Release cadencea release every ~20.7 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count34
latest_release_tag2.5.10
releases_from_tagsno
days_since_latest_release575
mean_days_between_releases20.7
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?

71Good · 17% of overall
How it's scored
52.6/60Stars1,746 stars
17.5/25Forks127 forks
7.4/15Watchers22 watchers
Inputs used
forks127
stars1,746
watchers22
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized license (MIT)
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges2
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateno
How it's scored
70/80Total downloads5,512,420 downloads all-time across nuget
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packagesZLogger.MessagePack, ZLogger
dependents
ecosystemsnuget
total_downloads5,512,420
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?

72Good · 23% of overall
How it's scored
9/54Bus factor1 contributor(s) cover half of all commits
9.5/22.5Commit distributiontop contributor authored 58% of commits
13.5/13.5Contributor breadth22 contributors
10/10OpenSSF Scorecard: Contributorsproject has 4 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled22
top_contributor_share0.58
How it's scored
38.6/42Issue resolution92% of issues closed
24.6/30PR acceptance109/133 decided PRs merged
0/13Newcomer PR acceptanceno first-time contributor's PR decided in 30d
1.5/15OpenSSF Scorecard: Code-ReviewFound 2/16 approved changesets -- score normalized to 1
Inputs used
merged_prs109
open_issues8
closed_issues91
prs_merged_7d0
prs_decided_7d0
prs_merged_30d1
prs_decided_30d1
issue_closed_ratio0.919
closed_unmerged_prs24
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
How it's scored
30/30Ownership backingorganization-owned
0/20Verified domainverified-domain status not read for this organization
25/25Owner reach3,636 followers of Cysharp
24.4/25Track record49 public repos, account ~7 yr old
Inputs used
followers3,636
owner_typeOrganization
is_verified
owner_loginCysharp
public_repos49
account_age_days2,839
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
How it's scored
25/25Published & resolvable2 package(s) on nuget
14/35Publish recencylatest publish 575 days ago
20/20Version history50 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagesZLogger.MessagePack, ZLogger
ecosystemsnuget
any_deprecatedno
min_days_since_publish575

Engineering Quality

Are baseline engineering and documentation practices in place?

66Good · 19% of overall
How it's scored
24/24CI workflows5 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
12/20OpenSSF Scorecard: CI-Tests5 out of 8 merged PRs checked by a CI test -- score normalized to 6
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configno
has_precommit_configno
How it's scored
30/30README
25/25Documentation directory
0/15Documentation / homepage site
10/10Repository description
0/10Topics
0/10Wiki
Inputs used
topics
has_wikino
homepage
docs_site
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

47Weak · 16% of overall
How it's scored
0/7.5Binary-Artifactsbinaries present in source code
0/7.5Branch-Protectionbranch protection not enabled on development/release branches
1.5/2.5CI-Tests5 out of 8 merged PRs checked by a CI test -- score normalized to 6
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0.8/7.5Code-ReviewFound 2/16 approved changesets -- score normalized to 1
2.5/2.5Contributorsproject has 4 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
7.5/7.5Dependency-Update-Toolupdate tool detected
0/5Fuzzingproject is not fuzzed
2.5/2.5Licenselicense file detected
5.2/7.5Maintained9 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 7
0/5Packagingno data
0/5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0/5SASTSAST tool is not run on all commits -- score normalized to 0
0/5Security-Policysecurity policy file not detected
0/7.5Signed-Releasesno data
5.2/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
6.8/7.5Vulnerabilities1 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): Packaging, Signed-Releases. Remaining weights renormalized.
How it's scored
9.1/35Direct dependencies free of known advisories2 affected: MessagePack 2.5.187 (high 8.2), System.Text.Json 8.0.4 (high 8.6)
0/25Indirect dependencies free of known advisoriestransitive set not separable from development and test dependencies in this scope
32.9/40No advisories left outstanding1 advisory-carrying package(s) unaddressed past 90 days; oldest published 664 days ago
Inputs used
sourceosv
advisories13
affected_packages3
assessed_packages59
unassessed_packages0
affected_by_severityhigh 2, moderate 1
direct_affected_packages2
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories. Remaining weights renormalized. Matched 59 resolved dependencies against OSV. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. 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.

62Moderate · 4% of overall
How it's scored
0/45Agent instructionsno CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
34.2/40Legible commit history52 of 81 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share0.642
agent_instruction_files
agent_instruction_max_bytes
How it's scored
12.6/18One-command bootstrapsandbox/Benchmark/Benchmark.csproj, sandbox/ConsoleApp/ConsoleApp.csproj, sandbox/GeneratorSandbox/GeneratorSandbox.csproj (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checkingC# (statically typed)
0/10Reproducible environment
0/10Demonstrated agent practiceno agent-authored commits among the last 100
8/8Automated maintenance6 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfiles
has_dockerfileno
typed_languageyes
bootstrap_files
has_devcontainerno
has_linter_configno
typecheck_configs
agent_commit_share0
toolchain_manifestssandbox/Benchmark/Benchmark.csproj, sandbox/ConsoleApp/ConsoleApp.csproj, sandbox/GeneratorSandbox/GeneratorSandbox.csproj, src/ZLogger.Generator/ZLogger.Generator.csproj, src/ZLogger.MessagePack/ZLogger.MessagePack.csproj, src/ZLogger/ZLogger.csproj, tests/ZLogger.Generator.Tests/ZLogger.Generator.Tests.csproj, tests/ZLogger.MessagePack.Tests/ZLogger.MessagePack.Tests.csproj, tests/ZLogger.Tests/ZLogger.Tests.csproj, tools/CommandTools/CommandTools.csproj
dependency_bot_commit_share0.06
How it's scored
45/45Type-checkable codeC# (statically typed)
55/55Manageable file sizes0/111 source files over 60KB
Inputs used
primary_languageC#
largest_source_bytes38,586
source_files_sampled111
oversized_source_files0
How it's scored
0/40API schema (OpenAPI/GraphQL/proto)not applicable to this kind of software
0/20MCP servernot applicable to this kind of software
40/40Runnable examplessample
Inputs used
example_dirssample
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

1,746GitHub stars
22contributors
18commits, last 12 months
27days since last push
34releases
1bus factor
8open issues
package ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch nuget package 'ZLogger.Generator' from its registry

More detail

Star and fork history 0 ★ / 127 ⇿
0Stars
127Forks
33Releases

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.

025507510012515012632020-042023-052026-07
Major 1Minor 11Patch 21

Each point covers 6 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 · 2026-08-04 17:17 UTC

0Binary-Artifactsbinaries present in source code
0Branch-Protectionbranch protection not enabled on development/release branches
6CI-Tests5 out of 8 merged PRs checked by a CI test -- score normalized to 6
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
1Code-ReviewFound 2/16 approved changesets -- score normalized to 1
10Contributorsproject has 4 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
7Maintained9 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 7
n/aPackagingpackaging workflow not detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
7Token-Permissionsdetected GitHub workflow tokens with excessive permissions
9Vulnerabilities1 existing vulnerabilities detected
Direct dependencies 22
RegistryPackageVersion constraintManifest
NuGetConsoleAppFramework5.2.1sandbox/ConsoleApp/ConsoleApp.csproj
NuGetJetBrains.Profiler.Api1.4.0sandbox/ConsoleApp/ConsoleApp.csproj
NuGetMicrosoft.CodeAnalysis.BannedApiAnalyzers2.9.8sandbox/ConsoleApp/ConsoleApp.csproj
NuGetMicrosoft.Extensions.Hosting8.0.0sandbox/ConsoleApp/ConsoleApp.csproj
NuGetMessagePack2.5.187sandbox/GeneratorSandbox/GeneratorSandbox.csproj
NuGetMicrosoft.Extensions.Logging.Console8.0.0sandbox/GeneratorSandbox/GeneratorSandbox.csproj
NuGetMicrosoft.CodeAnalysis.CSharp4.3.0src/ZLogger.Generator/ZLogger.Generator.csproj
NuGetMicrosoft.CodeAnalysis.Analyzers3.3.3src/ZLogger.Generator/ZLogger.Generator.csproj
NuGetMessagePack2.5.187src/ZLogger.MessagePack/ZLogger.MessagePack.csproj
NuGetPolySharp1.13.2src/ZLogger.MessagePack/ZLogger.MessagePack.csproj
NuGetMicrosoft.Extensions.Logging8.0.0src/ZLogger/ZLogger.csproj
NuGetSystem.Threading.Channels8.0.0src/ZLogger/ZLogger.csproj
NuGetSystem.IO.Hashing8.0.0src/ZLogger/ZLogger.csproj
NuGetUtf8StringInterpolation1.3.1src/ZLogger/ZLogger.csproj
NuGetMicrosoft.Bcl.TimeProvider8.0.0src/ZLogger/ZLogger.csproj
NuGetSystem.Text.Json8.0.5src/ZLogger/ZLogger.csproj
NuGetMicrosoft.Bcl.TimeProvider8.0.0src/ZLogger/ZLogger.csproj
NuGetMicrosoft.Bcl.AsyncInterfaces8.0.0src/ZLogger/ZLogger.csproj
NuGetSystem.Collections.Immutable8.0.0src/ZLogger/ZLogger.csproj
NuGetPolySharp1.14.1src/ZLogger/ZLogger.csproj
NuGetConsoleAppFramework4.2.4tools/CommandTools/CommandTools.csproj
NuGetMarkdig0.18.3tools/CommandTools/CommandTools.csproj
All dependencies 59

Full resolved dependency set from the GitHub dependency graph: 23 direct and 36 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
NuGetConsoleAppFramework4.2.4direct
NuGetConsoleAppFramework5.2.1direct
NuGetJetBrains.Profiler.Api1.4.0direct
NuGetMarkdig0.18.3direct
NuGetMessagePack2.5.187direct
NuGetMicrosoft.Bcl.AsyncInterfaces6.0.0direct
NuGetMicrosoft.Bcl.AsyncInterfaces8.0.0direct
NuGetMicrosoft.Bcl.TimeProvider8.0.0direct
NuGetMicrosoft.CodeAnalysis.Analyzers3.3.3direct
NuGetMicrosoft.CodeAnalysis.BannedApiAnalyzers2.9.8direct
NuGetMicrosoft.CodeAnalysis.CSharp4.3.0direct
NuGetMicrosoft.CodeAnalysis.CSharp4.4.0direct
NuGetMicrosoft.Extensions.Hosting8.0.0direct
NuGetMicrosoft.Extensions.Logging8.0.0direct
NuGetMicrosoft.Extensions.Logging.Console8.0.0direct
NuGetPolySharp1.13.2direct
NuGetPolySharp1.14.1direct
NuGetSystem.Collections.Immutable8.0.0direct
NuGetSystem.IO.Hashing8.0.0direct
NuGetSystem.Text.Json8.0.4direct
NuGetSystem.Text.Json8.0.5direct
NuGetSystem.Threading.Channels8.0.0direct
NuGetUtf8StringInterpolation1.3.1direct
NuGetBenchmarkDotNet0.13.10indirect
NuGetFluentAssertions5.10.3indirect
NuGetFluentAssertions6.7.0indirect
NuGetlog4net2.0.15indirect
NuGetMicrosoft.Extensions.Configuration8.0.0indirect
NuGetMicrosoft.Extensions.DependencyInjection8.0.0indirect
NuGetMicrosoft.Extensions.DependencyInjection.Abstractions8.0.0indirect
NuGetMicrosoft.Extensions.Logging.Abstractions8.0.0indirect
NuGetMicrosoft.Extensions.Logging.Configuration8.0.0indirect
NuGetMicrosoft.Extensions.Options8.0.0indirect
NuGetMicrosoft.Extensions.Primitives8.0.0indirect
NuGetMicrosoft.Extensions.TimeProvider.Testing8.0.0indirect
NuGetMicrosoft.NET.Test.Sdk16.6.0indirect
NuGetMicrosoft.NET.Test.Sdk17.6.0indirect
NuGetNLog5.2.5indirect
NuGetNLog.Extensions.Logging5.3.5indirect
NuGetSerilog3.1.1indirect
NuGetSerilog.Extensions.Logging8.0.0indirect
NuGetSerilog.Sinks.Async1.5.0indirect
NuGetSerilog.Sinks.Console5.0.0indirect
NuGetSerilog.Sinks.File5.0.0indirect
NuGetSerilog.Sinks.TextWriter2.1.0indirect
NuGetSystem.Buffers4.5.1indirect
NuGetSystem.ComponentModel.Annotations5.0.0indirect
NuGetSystem.Diagnostics.DiagnosticSource8.0.0indirect
NuGetSystem.Memory4.5.5indirect
NuGetSystem.Runtime.CompilerServices.Unsafe6.0.0indirect
NuGetSystem.Text.Encodings.Web8.0.0indirect
NuGetSystem.Threading.Tasks.Extensions4.5.4indirect
NuGetSystem.ValueTuple4.5.0indirect
NuGetxunit2.4.1indirect
NuGetxunit2.4.2indirect
NuGetxunit.runner.visualstudio2.4.1indirect
NuGetxunit.runner.visualstudio2.4.5indirect
NuGetZeroLog2.2.0indirect
NuGetZLogger2.0.2indirect
Dependency advisories 3

This repository publishes no package the index resolves, so its own dependency graph was assessed — 59 packages, which also include development and test pins that never ship: 3 carry known advisories, of which 2 are direct.

PackageVersionRelationSeverityAdvisoriesFixed in
MessagePack2.5.187directhigh113.1.7
System.Text.Json8.0.4directhigh18.0.5
log4net2.0.15indirectmoderate13.3.0

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.

The message is kept through sign-in.

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 v0.30.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticsNuGet.