Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-08-30 14:23 UTC

napi-rs / mimalloc-safe

A Fork from https://github.com/purpleprotocol/mimalloc_rust and keep updated with mimalloc

RustMIT★ 24 stars⑂ 4 forkssince Mar 2025View on GitHub ↗
KindLibraryhow this is determined

napi-rs/mimalloc-safe holds a health index of 75 out of 100, placing it in the Good band. It scores highest on Vitality (83/100) and lowest on Engineering Quality (49/100). It was last updated 6 days ago. A single contributor accounts for most of its recent work.

75
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.

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

Ownership

Node-API (N-API) for RustOrganization · verified domain
337 followers18 public repossince Dec 2017

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.iomimalloc-safe0.1.6570,292206 days agoallocatorencrypted-heapmimallocperformanceapi-bindingsmemory-management
crates.iolibmimalloc-sys20.1.6170,670226 days agoallocatorencrypted-heapperformanceapi-bindingsmemory-management

Metrics by category

Vitality

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

83Excellent · 21% of overall

Development activity

72Good
How it's scored
36/36Push recency — last push 6 days ago
10.4/36Commit cadence — 15/52 weeks with commits
15.5/18Commit volume — 52 commits in the last year
10/10OpenSSF Scorecard: Maintained — 13 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year52
human_commit_share0.53
days_since_last_push6
active_weeks_last_year15

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 28 releases published
36/36Release recency — latest release 6 days ago
27/27Release cadence — a release every ~11.1 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count28
latest_release_tagmimalloc-safe-v0.1.65
releases_from_tagsno
days_since_latest_release6
mean_days_between_releases11.1
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?

49Weak · 17% of overall

Popularity & adoption

26At Risk
How it's scored
22.1/60Stars — 24 stars
4/25Forks — 4 forks
0/15Watchers — 1 watchers
Inputs used
forks4
stars24
watchers1
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

50Moderate
How it's scored
22.5/22.5README
22.5/22.5License — recognized 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_badges0
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_services—
has_pull_request_templateno

Ecosystem adoption (downloads)

86Excellent
How it's scored
68.7/80Monthly downloads — 140,962 downloads/month across crates
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesmimalloc-safe, libmimalloc-sys2
dependents—
ecosystemscrates
total_downloads1,227,820
monthly_downloads140,962
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?

73Good · 23% of overall

Maintainer resilience (bus factor)

42Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
9.8/22.5Commit distribution — top contributor authored 56% of commits
13.5/13.5Contributor breadth — 24 contributors
10/10OpenSSF Scorecard: Contributors — project has 18 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled24
top_contributor_share0.564

Issue & PR responsiveness

70Good
How it's scored
35/42Issue resolution — 83% of issues closed
27.2/30PR acceptance — 78/86 decided PRs merged
0/13Newcomer PR acceptance — 0/1 first-time contributors' PRs merged in 30d
7.5/15OpenSSF Scorecard: Code-Review — Found 5/9 approved changesets -- score normalized to 5
Inputs used
merged_prs78
open_issues1
closed_issues5
prs_merged_7d1
prs_decided_7d2
prs_merged_30d1
prs_decided_30d2
issue_closed_ratio0.833
closed_unmerged_prs8
first_time_authors_30d1
first_time_prs_merged_30d0
first_time_prs_decided_30d1

Ownership & stewardship

90Excellent
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
18.2/25Owner reach — 337 followers of napi-rs
21.3/25Track record — 18 public repos, account ~8 yr old
Inputs used
followers337
owner_typeOrganization
is_verifiedyes
owner_loginnapi-rs
public_repos18
account_age_days3,194

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 2 package(s) on crates
35/35Publish recency — latest publish 6 days ago
20/20Version history — 22 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesmimalloc-safe, libmimalloc-sys2
ecosystemscrates
any_deprecatedno
min_days_since_publish6

Engineering Quality

Are baseline engineering and documentation practices in place?

49Weak · 19% of overall

Engineering practices

38Weak
How it's scored
24/24CI workflows — 2 workflow(s)
0/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
14/20OpenSSF Scorecard: CI-Tests — 21 out of 29 merged PRs checked by a CI test -- score normalized to 7
Inputs used
has_ciyes
has_testsno
has_editorconfigno
has_linter_configno
has_precommit_configno

Documentation

65Good
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://docs.rs/mimalloc-safe
10/10Repository description
0/10Topics
10/10Wiki
Inputs used
topics—
has_wikiyes
homepage—
docs_sitehttps://docs.rs/mimalloc-safe
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

64Moderate · 16% of overall

Security posture

55Moderate
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
1.8/2.5CI-Tests — 21 out of 29 merged PRs checked by a CI test -- score normalized to 7
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
3.8/7.5Code-Review — Found 5/9 approved changesets -- score normalized to 5
2.5/2.5Contributors — project has 18 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 — 13 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
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 — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
6/7.5Vulnerabilities — 2 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate5.5
Excluded from scoring (no data or not applicable): Packaging, 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_packages6
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 crates:mimalloc-safe@0.1.65 runtime dependency closure — what installing the published package pulls in — 6 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.

62Moderate · 4% of overall

Agent context & guidance

40Weak
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 40 of 53 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.755
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

50Moderate
How it's scored
12.6/18One-command bootstrap — Cargo.toml, example/Cargo.toml, libmimalloc-sys/Cargo.toml (toolchain convention, no task runner)
0/22Automated tests
0/11Lint / format config
11/11Static type checking — Rust (statically typed)
10/10Reproducible environment — lockfile
8/10Demonstrated agent practice — 4 of the last 100 commits agent-authored or agent-credited
8/8Automated maintenance — 34 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsno
lockfilesyarn.lock
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share0.04
toolchain_manifestsCargo.toml, example/Cargo.toml, libmimalloc-sys/Cargo.toml, libmimalloc-sys/sys-test/Cargo.toml
dependency_bot_commit_share0.34

Code legibility for models

100Exceptional
How it's scored
45/45Type-checkable code — Rust (statically typed)
55/55Manageable file sizes — 0/10 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes43,731
source_files_sampled10
oversized_source_files0

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

24GitHub stars
24contributors
52commits, last 12 months
6days since last push
28releases
1bus factor
1open issues
crates.io, npmpackage ecosystems

Data collection warnings

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

More detail

Star and fork history 0 ★ / 4 ⇿
0Stars
4Forks
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.

1223344412026-012026-042026-07
Major 0Minor 0Patch 0
OpenSSF Scorecard 5.5 / 10
5.5aggregate

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 · 2026-08-30 14:23 UTC

10Binary-Artifactsno binaries found in the repo
3Branch-Protectionbranch protection is not maximal on development and all release branches
7CI-Tests21 out of 29 merged PRs checked by a CI test -- score normalized to 7
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
5Code-ReviewFound 5/9 approved changesets -- score normalized to 5
10Contributorsproject has 18 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained13 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
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
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
8Vulnerabilities2 existing vulnerabilities detected
Direct dependencies 3
RegistryPackageVersion constraintManifest
crates.iolibmimalloc-sys20.1.61Cargo.toml
crates.iocty0.2libmimalloc-sys/Cargo.toml
crates.iolibc0.2libmimalloc-sys/Cargo.toml
All dependencies 126

Full resolved dependency set from the GitHub dependency graph: 3 direct and 123 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.iocty—direct
crates.iolibc—direct
crates.iolibmimalloc-sys2—direct
crates.iocc—indirect
crates.iocmake—indirect
crates.ioctest2—indirect
crates.ionapi—indirect
crates.ionapi-build—indirect
crates.ionapi-derive—indirect
npm@emnapi/core1.5.0indirect
npm@emnapi/core1.9.2indirect
npm@emnapi/core2.0.0-alpha.4indirect
npm@emnapi/runtime1.5.0indirect
npm@emnapi/runtime1.9.2indirect
npm@emnapi/runtime2.0.0-alpha.4indirect
npm@emnapi/wasi-threads1.1.0indirect
npm@emnapi/wasi-threads1.2.1indirect
npm@emnapi/wasi-threads2.0.1indirect
npm@inquirer/ansi2.0.7indirect
npm@inquirer/checkbox5.2.1indirect
npm@inquirer/confirm6.1.1indirect
npm@inquirer/core11.2.1indirect
npm@inquirer/editor5.2.2indirect
npm@inquirer/expand5.1.1indirect
npm@inquirer/external-editor3.0.3indirect
npm@inquirer/figures2.0.7indirect
npm@inquirer/input5.1.2indirect
npm@inquirer/number4.1.1indirect
npm@inquirer/password5.1.1indirect
npm@inquirer/prompts8.5.2indirect
npm@inquirer/rawlist5.3.1indirect
npm@inquirer/search4.2.1indirect
npm@inquirer/select5.2.1indirect
npm@inquirer/type4.0.7indirect
npm@napi-rs/cli3.8.6indirect
npm@napi-rs/cross-toolchain1.0.3indirect
npm@napi-rs/lzma1.4.5indirect
npm@napi-rs/lzma-android-arm-eabi1.4.5indirect
npm@napi-rs/lzma-android-arm641.4.5indirect
npm@napi-rs/lzma-darwin-arm641.4.5indirect
npm@napi-rs/lzma-darwin-x641.4.5indirect
npm@napi-rs/lzma-freebsd-x641.4.5indirect
npm@napi-rs/lzma-linux-arm-gnueabihf1.4.5indirect
npm@napi-rs/lzma-linux-arm64-gnu1.4.5indirect
npm@napi-rs/lzma-linux-arm64-musl1.4.5indirect
npm@napi-rs/lzma-linux-ppc64-gnu1.4.5indirect
npm@napi-rs/lzma-linux-riscv64-gnu1.4.5indirect
npm@napi-rs/lzma-linux-s390x-gnu1.4.5indirect
npm@napi-rs/lzma-linux-x64-gnu1.4.5indirect
npm@napi-rs/lzma-linux-x64-musl1.4.5indirect
npm@napi-rs/lzma-wasm32-wasi1.4.5indirect
npm@napi-rs/lzma-win32-arm64-msvc1.4.5indirect
npm@napi-rs/lzma-win32-ia32-msvc1.4.5indirect
npm@napi-rs/lzma-win32-x64-msvc1.4.5indirect
npm@napi-rs/tar1.1.0indirect
npm@napi-rs/tar-android-arm-eabi1.1.0indirect
npm@napi-rs/tar-android-arm641.1.0indirect
npm@napi-rs/tar-darwin-arm641.1.0indirect
npm@napi-rs/tar-darwin-x641.1.0indirect
npm@napi-rs/tar-freebsd-x641.1.0indirect
npm@napi-rs/tar-linux-arm-gnueabihf1.1.0indirect
npm@napi-rs/tar-linux-arm64-gnu1.1.0indirect
npm@napi-rs/tar-linux-arm64-musl1.1.0indirect
npm@napi-rs/tar-linux-ppc64-gnu1.1.0indirect
npm@napi-rs/tar-linux-s390x-gnu1.1.0indirect
npm@napi-rs/tar-linux-x64-gnu1.1.0indirect
npm@napi-rs/tar-linux-x64-musl1.1.0indirect
npm@napi-rs/tar-wasm32-wasi1.1.0indirect
npm@napi-rs/tar-win32-arm64-msvc1.1.0indirect
npm@napi-rs/tar-win32-ia32-msvc1.1.0indirect
npm@napi-rs/tar-win32-x64-msvc1.1.0indirect
npm@napi-rs/wasm-runtime1.0.4indirect
npm@napi-rs/wasm-runtime1.2.3indirect
npm@napi-rs/wasm-tools1.1.0indirect
npm@napi-rs/wasm-tools-android-arm-eabi1.1.0indirect
npm@napi-rs/wasm-tools-android-arm641.1.0indirect
npm@napi-rs/wasm-tools-darwin-arm641.1.0indirect
npm@napi-rs/wasm-tools-darwin-x641.1.0indirect
npm@napi-rs/wasm-tools-freebsd-x641.1.0indirect
npm@napi-rs/wasm-tools-linux-arm64-gnu1.1.0indirect
npm@napi-rs/wasm-tools-linux-arm64-musl1.1.0indirect
npm@napi-rs/wasm-tools-linux-x64-gnu1.1.0indirect
npm@napi-rs/wasm-tools-linux-x64-musl1.1.0indirect
npm@napi-rs/wasm-tools-wasm32-wasi1.1.0indirect
npm@napi-rs/wasm-tools-win32-arm64-msvc1.1.0indirect
npm@napi-rs/wasm-tools-win32-ia32-msvc1.1.0indirect
npm@napi-rs/wasm-tools-win32-x64-msvc1.1.0indirect
npm@octokit/auth-token6.0.0indirect
npm@octokit/core7.0.6indirect
npm@octokit/endpoint11.0.2indirect
npm@octokit/graphql9.0.3indirect
npm@octokit/openapi-types27.0.0indirect
npm@octokit/plugin-paginate-rest14.0.0indirect
npm@octokit/plugin-request-log6.0.0indirect
npm@octokit/plugin-rest-endpoint-methods17.0.0indirect
npm@octokit/request10.0.7indirect
npm@octokit/request-error7.1.0indirect
npm@octokit/rest22.0.1indirect
npm@octokit/types16.0.0indirect
npm@tybys/wasm-util0.10.0indirect
npm@tybys/wasm-util0.10.3indirect
npmargparse2.0.1indirect
npmbefore-after-hook4.0.0indirect
npmchardet2.1.1indirect
npmcli-width4.1.0indirect
npmclipanion4.0.0-rc.4indirect
npmcolorette2.0.20indirect
npmdebug4.4.1indirect
npmemnapi2.0.0-alpha.4indirect
npmes-toolkit1.47.1indirect
npmfast-content-type-parse3.0.0indirect
npmfast-string-truncated-width3.0.3indirect
npmfast-string-width3.0.2indirect
npmfast-wrap-ansi0.2.2indirect
npmiconv-lite0.7.2indirect
npmjs-yaml4.2.0indirect
npmms2.1.3indirect
npmmute-stream3.0.0indirect
npmobug2.1.3indirect
npmsafer-buffer2.1.2indirect
npmsemver7.8.4indirect
npmsignal-exit4.1.0indirect
npmtslib2.8.1indirect
npmtypanion3.14.0indirect
npmtypescript6.0.3indirect
npmuniversal-user-agent7.0.3indirect
Dependency advisories 0

Installing crates:mimalloc-safe@0.1.65 pulls in 6 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

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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 — crates.io.