Public recordExceptional
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-10-12 20:31 UTC
microsoft / vs-threading
The Microsoft.VisualStudio.Threading is a xplat library that provides many threading and synchronization primitives used in Visual Studio and other applications.
microsoft/vs-threading holds a health index of 94 out of 100, placing it in the Exceptional band. It scores highest on Vitality (88/100) and lowest on Security (73/100). It was last updated today. A single contributor accounts for most of its recent work.
94
overall / 100Software 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.
94
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)
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 80 is calibrated to 94 on the published index scale (record calibration 2026-08-02).
Ownership
MicrosoftOrganization · verified domain
131,500 followers8,359 public repossince Dec 2013
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| NuGet | Microsoft.VisualStudio.Threading.Only | 18.12.1 | - | 4 | 0 days ago | threadingasynclocksynchronizationthreadsafe |
| NuGet | Microsoft.VisualStudio.Threading | 18.12.1 | - | 75 | 0 days ago | threadingasynclocksynchronizationthreadsafe |
| NuGet | Microsoft.VisualStudio.Threading.Analyzers | 18.12.1 | - | 67 | 0 days ago | analyzersvisualstudiovssdksdkthreading |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
88
Development activity
97Exceptional
How it's scored
| 36/36 | Push recency — last push 0 days ago |
| 33.2/36 | Commit cadence — 48/52 weeks with commits |
| 18/18 | Commit volume — 635 commits in the last year |
| 10/10 | OpenSSF Scorecard: Maintained — 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10 |
Inputs used
| commits_last_year | 635 |
| human_commit_share | 0.83 |
| days_since_last_push | 0 |
| active_weeks_last_year | 48 |
Release discipline
74Good
How it's scored
| 27/27 | Ships releases — 58 releases published |
| 27/36 | Release recency — latest release 112 days ago |
| 19.8/27 | Release cadence — a release every ~87.9 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases. |
Inputs used
| releases_count | 58 |
| latest_release_tag | v18.7.23 |
| releases_from_tags | no |
| days_since_latest_release | 112 |
| mean_days_between_releases | 87.9 |
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
83
Popularity & adoption
76Good
How it's scored
| 48.9/60 | Stars — 1,040 stars |
| 18.4/25 | Forks — 162 forks |
| 9/15 | Watchers — 43 watchers |
Inputs used
| forks | 162 |
| stars | 1,040 |
| watchers | 43 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
79Good
How it's scored
| 22.5/22.5 | README |
| 16.9/22.5 | License — license file present, not a recognized license |
| 18/18 | CONTRIBUTING guide |
| 13.5/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| readme_badges | 3 |
| has_contributing | yes |
| has_issue_template | no |
| has_code_of_conduct | yes |
| readme_badge_services | dev.azure.com, shields.io |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
100Exceptional
How it's scored
| 80/80 | Total downloads — 248,540,390 downloads all-time across nuget |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | Microsoft.VisualStudio.Threading.Only, Microsoft.VisualStudio.Threading, Microsoft.VisualStudio.Threading.Analyzers |
| dependents | — |
| ecosystems | nuget |
| total_downloads | 248,540,390 |
| 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?
75
Maintainer resilience (bus factor)
34At Risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 1.8/22.5 | Commit distribution — top contributor authored 92% of commits |
| 13.5/13.5 | Contributor breadth — 69 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 14 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 69 |
| top_contributor_share | 0.92 |
Issue & PR responsiveness
81Excellent
How it's scored
| 34.8/42 | Issue resolution — 83% of issues closed |
| 20.7/30 | PR acceptance — 847/1,226 decided PRs merged |
| 0/13 | Newcomer PR acceptance — no first-time contributor's PR decided in 30d |
| 15/15 | OpenSSF Scorecard: Code-Review — all changesets reviewed |
Inputs used
| merged_prs | 847 |
| open_issues | 75 |
| closed_issues | 362 |
| prs_merged_7d | 1 |
| prs_decided_7d | 1 |
| prs_merged_30d | 2 |
| prs_decided_30d | 2 |
| issue_closed_ratio | 0.828 |
| closed_unmerged_prs | 379 |
| first_time_authors_30d | 0 |
| first_time_prs_merged_30d | 0 |
| first_time_prs_decided_30d | 0 |
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
Ownership & stewardship
100Exceptional
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 20/20 | Verified domain |
| 25/25 | Owner reach — 131,500 followers of microsoft |
| 25/25 | Track record — 8,359 public repos, account ~12 yr old |
Inputs used
| followers | 131,500 |
| owner_type | Organization |
| is_verified | yes |
| owner_login | microsoft |
| public_repos | 8,359 |
| account_age_days | 4,689 |
Package maintenance
100Exceptional
How it's scored
| 25/25 | Published & resolvable — 3 package(s) on nuget |
| 35/35 | Publish recency — latest publish 0 days ago |
| 20/20 | Version history — 75 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | Microsoft.VisualStudio.Threading.Only, Microsoft.VisualStudio.Threading, Microsoft.VisualStudio.Threading.Analyzers |
| ecosystems | nuget |
| any_deprecated | no |
| min_days_since_publish | 0 |
Engineering Quality
Are baseline engineering and documentation practices in place?
80
Engineering practices
74Good
How it's scored
| 24/24 | CI workflows — 4 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 6.4/6.4 | .editorconfig |
| 20/20 | OpenSSF Scorecard: CI-Tests — 17 out of 17 merged PRs checked by a CI test -- score normalized to 10 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | yes |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
90Excellent
How it's scored
| 30/30 | README |
| 25/25 | Documentation directory |
| 15/15 | Documentation / homepage site — https://microsoft.github.io/vs-threading/ |
| 10/10 | Repository description |
| 10/10 | Topics — 8 topics |
| 0/10 | Wiki |
Inputs used
| topics | threading, synchronization-primitives, ui-thread, analyzer, async, dotnet, nuget, netstandard |
| has_wiki | no |
| homepage | https://microsoft.github.io/vs-threading/ |
| docs_site | https://microsoft.github.io/vs-threading/ |
| has_readme | yes |
| has_docs_dir | yes |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
73
Security posture
73Good
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 3.8/7.5 | Branch-Protection — branch protection is not maximal on development and all release branches |
| 2.5/2.5 | CI-Tests — 17 out of 17 merged PRs checked by a CI test -- score normalized to 10 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 7.5/7.5 | Code-Review — all changesets reviewed |
| 2.5/2.5 | Contributors — project has 14 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 7.5/7.5 | Dependency-Update-Tool — update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.2/2.5 | License — license file detected |
| 7.5/7.5 | Maintained — 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10 |
| 0/5 | Packaging — no data |
| 5/5 | Pinned-Dependencies — all dependencies are pinned |
| 4.5/5 | SAST — SAST tool is not run on all commits -- score normalized to 9 |
| 5/5 | Security-Policy — security policy file detected |
| 0/7.5 | Signed-Releases — Project has not signed or included provenance with any releases. |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 17 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 1 |
| scorecard_aggregate | 7.3 |
Excluded from scoring (no data or not applicable): 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.
80
Agent context & guidance
68Good
How it's scored
| 45/45 | Agent instructions — AGENTS.md |
| 0/15 | Machine-readable docs (llms.txt) |
| 23.1/40 | Legible commit history — 36 of 83 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | 0.434 |
| agent_instruction_files | AGENTS.md |
| agent_instruction_max_bytes | 4,169 |
How it's scored
| 12.6/18 | One-command bootstrap — samples/samples.csproj, src/Microsoft.VisualStudio.Threading.Analyzers.CSharp/Microsoft.VisualStudio.Threading.Analyzers.CSharp.csproj, src/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes.csproj (toolchain convention, no task runner) |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — C# (statically typed) |
| 0/10 | Reproducible environment |
| 10/10 | Demonstrated agent practice — 55 of the last 100 commits agent-authored or agent-credited |
| 8/8 | Automated maintenance — 17 of the last 100 commits are automated dependency updates |
| 10/10 | OpenSSF Scorecard: Pinned-Dependencies — all dependencies are pinned |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0.55 |
| toolchain_manifests | samples/samples.csproj, src/Microsoft.VisualStudio.Threading.Analyzers.CSharp/Microsoft.VisualStudio.Threading.Analyzers.CSharp.csproj, src/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes.csproj, src/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic.csproj, src/Microsoft.VisualStudio.Threading.Analyzers/Microsoft.VisualStudio.Threading.Analyzers.csproj, src/Microsoft.VisualStudio.Threading.JointPackage/Microsoft.VisualStudio.Threading.JointPackage.csproj, src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj, src/SosThreadingTools/SosThreadingTools.csproj, test/IsolatedTestHost/IsolatedTestHost.csproj, test/Microsoft.VisualStudio.Threading.Analyzers.Tests/Microsoft.VisualStudio.Threading.Analyzers.Tests.csproj, test/Microsoft.VisualStudio.Threading.Tests.Win7RegistryWatcher/Microsoft.VisualStudio.Threading.Tests.Win7RegistryWatcher.csproj, test/Microsoft.VisualStudio.Threading.Tests/Microsoft.VisualStudio.Threading.Tests.csproj, test/NativeAOTCompatibility.Test/NativeAOTCompatibility.Test.csproj |
| dependency_bot_commit_share | 0.17 |
Code legibility for models
98Exceptional
How it's scored
| 45/45 | Type-checkable code — C# (statically typed) |
| 53.2/55 | Manageable file sizes — 8/245 source files over 60KB |
Inputs used
| primary_language | C# |
| largest_source_bytes | 206,201 |
| source_files_sampled | 245 |
| oversized_source_files | 8 |
Machine-readable interfaces
100Exceptional
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software |
| 20/20 | MCP server |
| 40/40 | Runnable examples — samples |
Inputs used
| example_dirs | samples |
| has_mcp_signal | yes |
| api_schema_files | — |
| interfaces_expected_of | — |
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto). Remaining weights renormalized.
Key facts
1,040GitHub stars
69contributors
635commits, last 12 months
0days since last push
58releases
1bus factor
75open issues
NuGetpackage ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- Could not fetch nuget package 'Microsoft.VisualStudio.Threading.Analyzers.Only' from its registry
- No resolved dependencies carried a version and a supported ecosystem
More detail
Star and fork history 0 ★ / 162 ⇿
0Stars
162Forks
58Releases
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.
Major 0Minor 0Patch 39
Each point covers 9 days.
OpenSSF Scorecard 7.3 / 10
7.3aggregate
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).
| 10 | Binary-Artifacts | no binaries found in the repo |
| 5 | Branch-Protection | branch protection is not maximal on development and all release branches |
| 10 | CI-Tests | 17 out of 17 merged PRs checked by a CI test -- score normalized to 10 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 10 | Code-Review | all changesets reviewed |
| 10 | Contributors | project has 14 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 10 | Dependency-Update-Tool | update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 9 | License | license file detected |
| 10 | Maintained | 30 commit(s) and 6 issue activity found in the last 90 days -- score normalized to 10 |
| n/a | Packaging | packaging workflow not detected |
| 10 | Pinned-Dependencies | all dependencies are pinned |
| 9 | SAST | SAST tool is not run on all commits -- score normalized to 9 |
| 10 | Security-Policy | security policy file detected |
| 0 | Signed-Releases | Project has not signed or included provenance with any releases. |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 18
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| NuGet | Microsoft.CodeAnalysis.CSharp | — | src/Microsoft.VisualStudio.Threading.Analyzers.CSharp/Microsoft.VisualStudio.Threading.Analyzers.CSharp.csproj |
| NuGet | Microsoft.CodeAnalysis.Analyzers | — | src/Microsoft.VisualStudio.Threading.Analyzers.CSharp/Microsoft.VisualStudio.Threading.Analyzers.CSharp.csproj |
| NuGet | Microsoft.CodeAnalysis | — | src/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes.csproj |
| NuGet | Microsoft.CodeAnalysis.Analyzers | — | src/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes/Microsoft.VisualStudio.Threading.Analyzers.CodeFixes.csproj |
| NuGet | Microsoft.CodeAnalysis.VisualBasic | — | src/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic.csproj |
| NuGet | Microsoft.CodeAnalysis.Analyzers | — | src/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic/Microsoft.VisualStudio.Threading.Analyzers.VisualBasic.csproj |
| NuGet | Nullable | — | src/Microsoft.VisualStudio.Threading.Analyzers/Microsoft.VisualStudio.Threading.Analyzers.csproj |
| NuGet | Microsoft.CodeAnalysis.Common | — | src/Microsoft.VisualStudio.Threading.Analyzers/Microsoft.VisualStudio.Threading.Analyzers.csproj |
| NuGet | Microsoft.CodeAnalysis.Analyzers | — | src/Microsoft.VisualStudio.Threading.Analyzers/Microsoft.VisualStudio.Threading.Analyzers.csproj |
| NuGet | Nullable | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | System.Memory | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | System.Threading.Tasks.Extensions | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | Microsoft.Bcl.AsyncInterfaces | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | Microsoft.VisualStudio.Validation | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | Microsoft.Win32.Registry | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | Microsoft.Windows.CsWin32 | — | src/Microsoft.VisualStudio.Threading/Microsoft.VisualStudio.Threading.csproj |
| NuGet | Microsoft.Diagnostics.Runtime.Utilities | — | src/SosThreadingTools/SosThreadingTools.csproj |
| NuGet | DNNE | — | src/SosThreadingTools/SosThreadingTools.csproj |
All dependencies 25
Full resolved dependency set from the GitHub dependency graph: 14 direct and 11 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| NuGet | DNNE | — | direct |
| NuGet | Microsoft.Bcl.AsyncInterfaces | — | direct |
| NuGet | Microsoft.CodeAnalysis | — | direct |
| NuGet | Microsoft.CodeAnalysis.Analyzers | — | direct |
| NuGet | Microsoft.CodeAnalysis.Common | — | direct |
| NuGet | Microsoft.CodeAnalysis.CSharp | — | direct |
| NuGet | Microsoft.CodeAnalysis.VisualBasic | — | direct |
| NuGet | Microsoft.Diagnostics.Runtime.Utilities | — | direct |
| NuGet | Microsoft.VisualStudio.Validation | — | direct |
| NuGet | Microsoft.Win32.Registry | — | direct |
| NuGet | Microsoft.Windows.CsWin32 | — | direct |
| NuGet | Nullable | — | direct |
| NuGet | System.Memory | — | direct |
| NuGet | System.Threading.Tasks.Extensions | — | direct |
| NuGet | Microsoft.CodeAnalysis.CSharp.CodeFix.Testing | — | indirect |
| NuGet | Microsoft.CodeAnalysis.VisualBasic.CodeFix.Testing | — | indirect |
| NuGet | Microsoft.VisualStudio.Internal.MicroBuild.NonShipping | — | indirect |
| NuGet | Microsoft.VisualStudio.Interop | — | indirect |
| NuGet | Microsoft.VisualStudio.Shell.15.0 | — | indirect |
| NuGet | Microsoft.VisualStudio.Shell.Framework | — | indirect |
| NuGet | System.Runtime.CompilerServices.Unsafe | — | indirect |
| NuGet | Xunit.Combinatorial | — | indirect |
| NuGet | Xunit.StaFact | — | indirect |
| NuGet | xunit.v3.core.mtp-v2 | — | indirect |
| NuGet | xunit.v3.mtp-v2 | — | indirect |
Dependency advisories not assessed
Advisory matching could not run for this report: No resolved dependencies carried a version and a supported ecosystem
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.
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 — NuGet.