Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-10 20:09 UTC

margelo / nitro

🔥 Insanely fast native C++, Swift or Kotlin modules with a statically compiled binding layer to JSI

C++ · TypeScript · SwiftMIT★ 1,932 stars⑂ 117 forkssince Jun 2024View on GitHub ↗
KindCommand-line toolMobile applicationhow this is determined
#cpp#jsi#kotlin#library#modules#native#react#react-native#swift#templates#nitro#turbomodules#nitro-modules#hybrid-object#fast#hybrid

margelo/nitro holds a health index of 89 out of 100, placing it in the Excellent band. It scores highest on Vitality (93/100) and lowest on Security (54/100). It was last updated today. A single contributor accounts for most of its recent work.

89
overall / 100
Excellent

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.

89
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 75 is calibrated to 89 on the published index scale (record calibration 2026-08-02).

Ownership

MargeloOrganization · verified domain
873 followers45 public repossince Oct 2021

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npmnitrogenpoints to another repo — not scored0.37.1417,01127314 days ago—
npmreact-native-nitro-modulespoints to another repo — not scored0.37.17,331,87212514 days agoreact-nativenitroiosandroidvisionostvosmacoscppframeworkreactswiftnativemodulesfastjsiturboscaffoldtemplateviews

Metrics by category

Vitality

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

93Exceptional · 21% of overall

Development activity

95Exceptional
How it's scored
36/36Push recency — last push 0 days ago
31.2/36Commit cadence — 45/52 weeks with commits
18/18Commit volume — 522 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 10 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year522
human_commit_share0.86
days_since_last_push0
active_weeks_last_year45

Release discipline

90Excellent
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 14 days ago
27/27Release cadence — a release every ~6.4 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count100
latest_release_tagv0.37.1
releases_from_tagsno
days_since_latest_release14
mean_days_between_releases6.4

Community & Adoption

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

74Good · 17% of overall

Popularity & adoption

77Good
How it's scored
53.3/60Stars — 1,932 stars
17.2/25Forks — 117 forks
6.4/15Watchers — 15 watchers
Inputs used
forks117
stars1,932
watchers15
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

70Good
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (MIT)
18/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges0
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_services—
has_pull_request_templateno

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

60Moderate · 23% of overall

Maintainer resilience (bus factor)

34At Risk
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
1.4/22.5Commit distribution — top contributor authored 94% of commits
13.5/13.5Contributor breadth — 46 contributors
10/10OpenSSF Scorecard: Contributors — project has 12 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled46
top_contributor_share0.939

Issue & PR responsiveness

57Moderate
How it's scored
34.1/42Issue resolution — 81% of issues closed
20.4/30PR acceptance — 833/1,225 decided PRs merged
2.4/13Newcomer PR acceptance — 2/11 first-time contributors' PRs merged in 30d
0/15OpenSSF Scorecard: Code-Review — Found 2/26 approved changesets -- score normalized to 0
Inputs used
merged_prs833
open_issues46
closed_issues199
prs_merged_7d30
prs_decided_7d33
prs_merged_30d33
prs_decided_30d45
issue_closed_ratio0.812
closed_unmerged_prs392
first_time_authors_30d2
first_time_prs_merged_30d2
first_time_prs_decided_30d11

Ownership & stewardship

93Exceptional
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
21.1/25Owner reach — 873 followers of margelo
22/25Track record — 45 public repos, account ~4 yr old
Inputs used
followers873
owner_typeOrganization
is_verifiedyes
owner_loginmargelo
public_repos45
account_age_days1,801

Engineering Quality

Are baseline engineering and documentation practices in place?

89Excellent · 19% of overall

Engineering practices

88Excellent
How it's scored
24/24CI workflows — 15 workflow(s)
24/24Tests present
16/16Linter config — eslint.config.mjs, packages/react-native-nitro-test-external/package.json ("eslintConfig", "prettier"), packages/template/package.json ("eslintConfig", "prettier")
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
18/20OpenSSF Scorecard: CI-Tests — 27 out of 29 merged PRs checked by a CI test -- score normalized to 9
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://nitro.margelo.com
10/10Repository description
10/10Topics — 16 topics
0/10Wiki
Inputs used
topicscpp, jsi, kotlin, library, modules, native, react, react-native, swift, templates, nitro, turbomodules, nitro-modules, hybrid-object, fast, hybrid
has_wikino
homepagehttps://nitro.margelo.com
docs_sitehttps://nitro.margelo.com
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

54Moderate · 16% of overall

Security posture

42Weak
How it's scored
6/7.5Binary-Artifacts — binaries present in source code
2.2/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.2/2.5CI-Tests — 27 out of 29 merged PRs checked by a CI test -- score normalized to 9
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 2/26 approved changesets -- score normalized to 0
2.5/2.5Contributors — project has 12 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 10 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
1.5/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
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
0/7.5Vulnerabilities — 146 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated17
scorecard_versionv5.5.0
checks_inconclusive1
scorecard_aggregate4.2
Excluded from scoring (no data or not applicable): Packaging. 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_packages27
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 npm:nitrogen@0.37.1 runtime dependency closure — what installing the published package pulls in — 27 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.

78Good · 4% of overall

Agent context & guidance

55Moderate
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
15/15Machine-readable docs (llms.txt) — llms.txt served by the project website (https://nitro.margelo.com/llms.txt)
40/40Legible commit history — 86 of 86 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtyes
llms_txt_urlhttps://nitro.margelo.com/llms.txt
legible_history_share1
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

80Excellent
How it's scored
12.6/18One-command bootstrap — apps/benchmark/android/app/build.gradle, apps/benchmark/android/build.gradle, apps/example/android/app/build.gradle (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config — eslint.config.mjs, packages/react-native-nitro-test-external/package.json ("eslintConfig", "prettier"), packages/template/package.json ("eslintConfig", "prettier")
11/11Static type checking — apps/benchmark/tsconfig.json, apps/example/tsconfig.json, config/tsconfig.json, docs/tsconfig.json, packages/nitrogen/tsconfig.json, packages/react-native-nitro-modules/tsconfig.json, packages/react-native-nitro-test-external/tsconfig.json, packages/react-native-nitro-test/tsconfig.json, packages/template/tsconfig.json, scripts/performance/tsconfig.json
10/10Reproducible environment — lockfile
2/10Demonstrated agent practice — 1 of the last 100 commits agent-authored or agent-credited
8/8Automated maintenance — 14 of the last 100 commits are automated dependency updates
3/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
Inputs used
has_nixno
has_testsyes
lockfilesGemfile.lock
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configsapps/benchmark/tsconfig.json, apps/example/tsconfig.json, config/tsconfig.json, docs/tsconfig.json, packages/nitrogen/tsconfig.json, packages/react-native-nitro-modules/tsconfig.json, packages/react-native-nitro-test-external/tsconfig.json, packages/react-native-nitro-test/tsconfig.json, packages/template/tsconfig.json, scripts/performance/tsconfig.json
agent_commit_share0.01
toolchain_manifestsapps/benchmark/android/app/build.gradle, apps/benchmark/android/build.gradle, apps/example/android/app/build.gradle, apps/example/android/build.gradle, packages/react-native-nitro-modules/android/build.gradle, packages/react-native-nitro-test-external/android/build.gradle, packages/react-native-nitro-test/android/build.gradle, packages/template/android/build.gradle
dependency_bot_commit_share0.14

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — C++ (statically typed)
54.9/55Manageable file sizes — 1/416 source files over 60KB
Inputs used
primary_languageC++
largest_source_bytes85,748
source_files_sampled416
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 — example
Inputs used
example_dirsexample
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

1,932GitHub stars
46contributors
522commits, last 12 months
0days since last push
100releases
1bus factor
46open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • npm package 'nitrogen' points at a different repository (https://github.com/mrousavy/nitro); excluded from ecosystem scoring
  • Could not fetch npm package '$$packageName$$' from its registry
  • Could not fetch npm package 'react-native-nitro-test' from its registry
  • npm package 'react-native-nitro-modules' points at a different repository (https://github.com/mrousavy/nitro); excluded from ecosystem scoring
  • Could not fetch npm package 'react-native-nitro-test-external' from its registry

More detail

Star and fork history 0 ★ / 117 ⇿
0Stars
117Forks
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.

02040608010012011732024-092025-092026-09
Major 0Minor 26Patch 68

Each point covers 2 days.

OpenSSF Scorecard 4.2 / 10
4.2aggregate

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 · 2026-09-10 20:09 UTC

8Binary-Artifactsbinaries present in source code
3Branch-Protectionbranch protection is not maximal on development and all release branches
9CI-Tests27 out of 29 merged PRs checked by a CI test -- score normalized to 9
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 2/26 approved changesets -- score normalized to 0
10Contributorsproject has 12 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 10 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
3Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 3
0SASTSAST tool is not run on all commits -- score normalized to 0
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
0Vulnerabilities146 existing vulnerabilities detected
Direct dependencies 5
RegistryPackageVersion constraintManifest
npmchalk^5.3.0packages/nitrogen/package.json
npmreact-native-nitro-modules^0.37.1packages/nitrogen/package.json
npmts-morph^28.0.0packages/nitrogen/package.json
npmyargs^18.0.0packages/nitrogen/package.json
npmzod^4.4.3packages/nitrogen/package.json
All dependencies 128

Full resolved dependency set from the GitHub dependency graph: 6 direct and 122 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
npmchalk^5.3.0direct
npmreact-native-nitro-modules*direct
npmreact-native-nitro-modules^0.37.1direct
npmts-morph^28.0.0direct
npmyargs^18.0.0direct
npmzod^4.4.3direct
npm@babel/core^7.29.7indirect
npm@babel/preset-env^7.29.7indirect
npm@babel/runtime^7.29.7indirect
npm@docusaurus/core3.10.2indirect
npm@docusaurus/faster3.10.2indirect
npm@docusaurus/module-type-aliases3.10.2indirect
npm@docusaurus/plugin-sitemap3.10.2indirect
npm@docusaurus/plugin-vercel-analytics3.10.2indirect
npm@docusaurus/preset-classic3.10.2indirect
npm@docusaurus/theme-mermaid3.10.2indirect
npm@docusaurus/tsconfig3.10.2indirect
npm@docusaurus/types3.10.2indirect
npm@eslint/eslintrc^3.3.5indirect
npm@eslint/js^9.39.4indirect
npm@jamesacarr/eslint-formatter-github-actions^0.2.0indirect
npm@mdx-js/react^3.1.1indirect
npm@react-native-community/cli20.1.3indirect
npm@react-native-community/cli20.2.0indirect
npm@react-native-community/cli-platform-android20.1.3indirect
npm@react-native-community/cli-platform-android20.2.0indirect
npm@react-native-community/cli-platform-ios20.1.3indirect
npm@react-native-community/cli-platform-ios20.2.0indirect
npm@react-native-harness/platform-android1.4.1indirect
npm@react-native-harness/platform-apple1.4.1indirect
npm@react-native-harness/ui1.4.1indirect
npm@react-native-segmented-control/segmented-control^2.5.7indirect
npm@react-native/babel-preset0.85.3indirect
npm@react-native/eslint-config0.85.3indirect
npm@react-native/jest-preset0.85.3indirect
npm@react-native/metro-config0.85.3indirect
npm@react-native/typescript-config0.85.3indirect
npm@react-navigation/bottom-tabs^7.16.2indirect
npm@react-navigation/native^7.2.5indirect
npm@release-it-plugins/workspaces^5.0.3indirect
npm@release-it/bumper^7.0.5indirect
npm@release-it/conventional-changelog^10.0.6indirect
npm@tsconfig/react-native^3.0.9indirect
npm@types/bun1.4.0indirect
npm@types/deep-equal^1.0.4indirect
npm@types/jest*indirect
npm@types/jest^29.5.12indirect
npm@types/jest^29.5.14indirect
npm@types/node^26.0.0indirect
npm@types/react^19.2.15indirect
npm@types/upng-js2.1.5indirect
npmbabel-plugin-module-resolver^5.0.3indirect
npmcheerio^1.2.0indirect
npmclsx^2.1.1indirect
npmdeep-equal^2.2.3indirect
npmdocusaurus-plugin-llms^0.6.0indirect
npmesbuild-register^3.6.0indirect
npmeslint^9.39.4indirect
npmeslint-config-prettier^10.1.8indirect
npmeslint-plugin-ft-flow^3.0.11indirect
npmeslint-plugin-prettier^5.5.5indirect
npmjest*indirect
npmjest^29.7.0indirect
npmnitrogen*indirect
npmprettier^3.8.3indirect
npmprism-react-renderer^2.4.1indirect
npmreact19.2.3indirect
npmreact-dom19.2.3indirect
npmreact-native0.85.3indirect
npmreact-native-builder-bob^0.41.0indirect
npmreact-native-harness1.4.1indirect
npmreact-native-nitro-test*indirect
npmreact-native-nitro-test-external*indirect
npmreact-native-safe-area-context^5.8.0indirect
npmreact-native-screens^4.25.2indirect
npmreact-native-worklets^0.9.1indirect
npmrelease-it^19.2.4indirect
npmsatori^0.33.3indirect
npmsharp^0.35.4indirect
npmtypescript^6.0.3indirect
npmtypescript~6.0.3indirect
npmtypescript-eslint^8.60.0indirect
npmupng-js2.1.0indirect
RubyGemsactivesupport7.1.6indirect
RubyGemsaddressable2.9.0indirect
RubyGemsalgoliasearch1.27.5indirect
RubyGemsatomos0.1.3indirect
RubyGemsbase640.3.0indirect
RubyGemsbenchmark0.4.1indirect
RubyGemsbigdecimal3.2.2indirect
RubyGemsCFPropertyList3.0.8indirect
RubyGemsclaide1.1.0indirect
RubyGemscocoapods1.16.2indirect
RubyGemscocoapods-core1.16.2indirect
RubyGemscocoapods-deintegrate1.0.5indirect
RubyGemscocoapods-downloader2.1indirect
RubyGemscocoapods-plugins1.0.0indirect
RubyGemscocoapods-search1.0.1indirect
RubyGemscocoapods-trunk1.6.0indirect
RubyGemscocoapods-try1.2.0indirect
RubyGemscolored23.1.2indirect
RubyGemsconcurrent-ruby1.3.6indirect
RubyGemsconnection_pool2.5.5indirect
RubyGemsdrb2.2.3indirect
RubyGemsescape0.0.4indirect
RubyGemsethon0.18.0indirect
RubyGemsffi1.17.4indirect
RubyGemsfourflusher2.3.1indirect
RubyGemsfuzzy_match2.0.4indirect
RubyGemsgh_inspector1.1.3indirect
RubyGemshttpclient2.9.0indirect
RubyGemsi18n1.14.6indirect
RubyGemsjson2.19.5indirect
RubyGemslogger1.7.0indirect
RubyGemsminitest5.25.1indirect
RubyGemsmolinillo0.8.0indirect
RubyGemsmutex_m0.3.0indirect
RubyGemsnanaimo0.4.0indirect
RubyGemsnap1.1.0indirect
RubyGemsnetrc0.11.0indirect
RubyGemsnkf0.2.0indirect
RubyGemspublic_suffix4.0.7indirect
RubyGemsrexml3.4.4indirect
RubyGemsruby-macho2.5.1indirect
RubyGemssecurerandom0.3.2indirect
RubyGemstyphoeus1.6.0indirect
RubyGemstzinfo2.0.6indirect
RubyGemsxcodeproj1.27.0indirect
Dependency advisories 0

Installing npm:nitrogen@0.37.1 pulls in 27 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 — npm.