Software health reportschema 0.31.0 · metrics 2.5.0 · 2026-08-08 20:03 UTC

rust-lang / rust-bindgen

Automatically generates Rust FFI bindings to C (and some C++) libraries.

RustBSD-3-Clause★ 5,260 stars⑂ 822 forkssince Jun 2016View on GitHub ↗

KindLibraryCommand-line toolhow this is determined

rust-lang/rust-bindgen holds a health index of 89 out of 100, placing it in the Excellent band. It scores highest on Community & Adoption (90/100) and lowest on AI Readiness (59/100). It was last updated 11 days ago. 3 contributors account for most of its recent work.

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.

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

Ownership

The Rust Programming LanguageOrganization

17,970 followers246 public repossince Sep 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
crates.io	bindgen	0.72.1	21,100,466	126	342 days ago	bindings ffi code-generation external-ffi-bindings
crates.io	bindgen-cli	0.72.1	78,628	22	342 days ago	bindings ffi code-generation external-ffi-bindings

Metrics by category

Vitality

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

70Good · 21% of overall

Development activity

75Good

How it's scored

28.8/36	Push recency — last push 11 days ago
19.4/36	Commit cadence — 28/52 weeks with commits
16.5/18	Commit volume — 68 commits in the last year
10/10	OpenSSF Scorecard: Maintained — 20 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10

Inputs used

commits_last_year	68
human_commit_share	1
days_since_last_push	11
active_weeks_last_year	28

Release discipline

63Moderate

How it's scored

27/27	Ships releases — 15 releases published
16.2/36	Release recency — latest release 342 days ago
19.8/27	Release cadence — a release every ~66.3 days
0/10	OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.

Inputs used

releases_count	15
latest_release_tag	v0.72.1
releases_from_tags	no
days_since_latest_release	342
mean_days_between_releases	66.3

Community & Adoption

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

90Excellent · 17% of overall

Popularity & adoption

94Exceptional

How it's scored

60/60	Stars — 5,260 stars
24.3/25	Forks — 822 forks
9.4/15	Watchers — 50 watchers

Inputs used

forks	822
stars	5,260
watchers	50
growth_state	unverified
growth_factor_pct	100
growth_unverified_reason	no_history

Community health

78Good

How it's scored

22.5/22.5	README
22.5/22.5	License — recognized license (BSD-3-Clause)
18/18	CONTRIBUTING guide
0/13.5	Code of conduct
7.2/7.2	Issue template
0/6.3	PR template

Inputs used

has_readme	yes
has_license	yes
readme_badges	1
has_contributing	yes
has_issue_template	yes
has_code_of_conduct	no
readme_badge_services	shields.io
has_pull_request_template	no

Ecosystem adoption (downloads)

100Exceptional

How it's scored

80/80	Monthly downloads — 21,179,094 downloads/month across crates
0/20	Registry dependents — not reported by this ecosystem

Inputs used

packages	bindgen, bindgen-cli
dependents	—
ecosystems	crates
total_downloads	355,898,440
monthly_downloads	21,179,094

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)

75Good

How it's scored

36/54	Bus factor — 3 contributor(s) cover half of all commits
15.3/22.5	Commit distribution — top contributor authored 32% of commits
13.5/13.5	Contributor breadth — 100 contributors
10/10	OpenSSF Scorecard: Contributors — project has 70 contributing companies or organizations

Inputs used

bus_factor	3
contributors_sampled	100
top_contributor_share	0.32

Issue & PR responsiveness

70Good

How it's scored

28.9/42	Issue resolution — 69% of issues closed
26.4/30	PR acceptance — 1,452/1,647 decided PRs merged
2.6/13	Newcomer PR acceptance — 1/5 first-time contributors' PRs merged in 30d
12/15	OpenSSF Scorecard: Code-Review — Found 18/21 approved changesets -- score normalized to 8

Inputs used

merged_prs	1,452
open_issues	516
closed_issues	1,133
prs_merged_7d	0
prs_decided_7d	0
prs_merged_30d	3
prs_decided_30d	7
issue_closed_ratio	0.687
closed_unmerged_prs	195
first_time_authors_30d	5
first_time_prs_merged_30d	1
first_time_prs_decided_30d	5

Ownership & stewardship

80Excellent

How it's scored

30/30	Ownership backing — organization-owned
0/20	Verified domain
25/25	Owner reach — 17,970 followers of rust-lang
25/25	Track record — 246 public repos, account ~12 yr old

Inputs used

followers	17,970
owner_type	Organization
is_verified	—
owner_login	rust-lang
public_repos	246
account_age_days	4,714

Package maintenance

91Excellent

How it's scored

25/25	Published & resolvable — 2 package(s) on crates
26/35	Publish recency — latest publish 342 days ago
20/20	Version history — 126 published versions
20/20	Not deprecated — active, not deprecated or yanked

Inputs used

packages	bindgen, bindgen-cli
ecosystems	crates
any_deprecated	no
min_days_since_publish	342

Engineering Quality

Are baseline engineering and documentation practices in place?

71Good · 19% of overall

Engineering practices

68Good

How it's scored

24/24	CI workflows — 6 workflow(s)
24/24	Tests present
0/16	Linter config
0/9.6	Pre-commit hooks
0/6.4	.editorconfig
20/20	OpenSSF Scorecard: CI-Tests — 21 out of 21 merged PRs checked by a CI test -- score normalized to 10

Inputs used

has_ci	yes
has_tests	yes
has_editorconfig	no
has_linter_config	no
has_precommit_config	no

Documentation

75Good

How it's scored

30/30	README
0/25	Documentation directory
15/15	Documentation / homepage site — https://rust-lang.github.io/rust-bindgen/
10/10	Repository description
10/10	Topics — 3 topics
10/10	Wiki

Inputs used

topics	ffi, bindings, codegen
has_wiki	yes
homepage	https://rust-lang.github.io/rust-bindgen/
has_readme	yes
has_docs_dir	no
has_description	yes

Security

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

68Good · 16% of overall

Security posture

60Moderate

How it's scored

7.5/7.5	Binary-Artifacts — no binaries found in the repo
2.2/7.5	Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5	CI-Tests — 21 out of 21 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
6/7.5	Code-Review — Found 18/21 approved changesets -- score normalized to 8
2.5/2.5	Contributors — project has 70 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
2.5/2.5	License — license file detected
7.5/7.5	Maintained — 20 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
0/5	Packaging — no data
0/5	Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5	SAST — SAST tool is not run on all commits -- score normalized to 0
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
6.8/7.5	Vulnerabilities — 1 existing vulnerabilities detected

Inputs used

source	openssf_scorecard
checks_evaluated	17
scorecard_version	v5.5.0
checks_inconclusive	1
scorecard_aggregate	6

Excluded from scoring (no data or not applicable): packaging. Remaining weights renormalized.

Dependency advisories

100Exceptional

How it's scored

35/35	Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25	Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40	No advisories left outstanding — no advisory carries a publication date

Inputs used

source	osv
advisories	2
affected_packages	1
assessed_packages	79
unassessed_packages	0
affected_by_severity	low 1
direct_affected_packages	0

Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 79 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.

59Moderate · 4% of overall

Agent context & guidance

35Weak

How it's scored

0/45	Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15	Machine-readable docs (llms.txt)
34.7/40	Legible commit history — 65 of 100 human commits state their intent (structured subject or explanatory body)

Inputs used

has_llms_txt	no
legible_history_share	0.65
agent_instruction_files	—
agent_instruction_max_bytes	—

Verify loop (build / test / typecheck)

62Moderate

How it's scored

12.6/18	One-command bootstrap — Cargo.toml, bindgen-cli/Cargo.toml, bindgen-integration/Cargo.toml (toolchain convention, no task runner)
22/22	Automated tests
0/11	Lint / format config
11/11	Static type checking — Rust (statically typed)
10/10	Reproducible environment — lockfile
6/10	Demonstrated agent practice — 3 of the last 100 commits agent-authored or agent-credited
0/8	Automated maintenance — no automated dependency updates observed
0/10	OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0

Inputs used

has_nix	no
has_tests	yes
lockfiles	Cargo.lock
has_dockerfile	no
typed_language	yes
bootstrap_files	—
has_devcontainer	no
has_linter_config	no
typecheck_configs	—
agent_commit_share	0.03
toolchain_manifests	Cargo.toml, bindgen-cli/Cargo.toml, bindgen-integration/Cargo.toml, bindgen-tests/Cargo.toml, bindgen-tests/tests/expectations/Cargo.toml, bindgen-tests/tests/quickchecking/Cargo.toml, bindgen/Cargo.toml
dependency_bot_commit_share	0

Code legibility for models

100Exceptional

How it's scored

45/45	Type-checkable code — Rust (statically typed)
54.6/55	Manageable file sizes — 10/1,316 source files over 60KB

Inputs used

primary_language	Rust
largest_source_bytes	4,601,670
source_files_sampled	1,316
oversized_source_files	10

Key facts

5,260GitHub stars

100contributors

68commits, last 12 months

11days since last push

15releases

3bus factor

516open issues

crates.iopackage ecosystems

Data collection warnings

Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
Could not fetch crates package 'bindgen-tests' from its registry
Could not fetch crates package 'bindgen-integration' from its registry

More detail

Star and fork history 0 ★ / 822 ⇿

0Stars

822Forks

15Releases

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 5Patch 10

Each point covers 14 days.

OpenSSF Scorecard 6.0 / 10

6.0aggregate

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 · 2026-08-08 20:02 UTC

10	Binary-Artifacts	no binaries found in the repo
3	Branch-Protection	branch protection is not maximal on development and all release branches
10	CI-Tests	21 out of 21 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
8	Code-Review	Found 18/21 approved changesets -- score normalized to 8
10	Contributors	project has 70 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
10	License	license file detected
10	Maintained	20 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
n/a	Packaging	packaging workflow not detected
0	Pinned-Dependencies	dependency not pinned by hash detected -- score normalized to 0
0	SAST	SAST tool is not run on all commits -- score normalized to 0
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
9	Vulnerabilities	1 existing vulnerabilities detected

Direct dependencies 19

Registry	Package	Version constraint	Manifest
crates.io	bindgen	`—`	bindgen-cli/Cargo.toml
crates.io	env_logger	`—`	bindgen-cli/Cargo.toml
crates.io	log	`—`	bindgen-cli/Cargo.toml
crates.io	proc-macro2	`—`	bindgen-cli/Cargo.toml
crates.io	shlex	`—`	bindgen-cli/Cargo.toml
crates.io	annotate-snippets	`—`	bindgen/Cargo.toml
crates.io	bitflags	`—`	bindgen/Cargo.toml
crates.io	cexpr	`—`	bindgen/Cargo.toml
crates.io	clang-sys	`—`	bindgen/Cargo.toml
crates.io	clap	`—`	bindgen/Cargo.toml
crates.io	clap_complete	`—`	bindgen/Cargo.toml
crates.io	log	`—`	bindgen/Cargo.toml
crates.io	prettyplease	`—`	bindgen/Cargo.toml
crates.io	proc-macro2	`—`	bindgen/Cargo.toml
crates.io	quote	`—`	bindgen/Cargo.toml
crates.io	regex	`—`	bindgen/Cargo.toml
crates.io	rustc-hash	`—`	bindgen/Cargo.toml
crates.io	shlex	`—`	bindgen/Cargo.toml
crates.io	syn	`—`	bindgen/Cargo.toml

All dependencies 79

Full resolved dependency set from the GitHub dependency graph: 16 direct and 63 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

Registry	Package	Version	Relation
crates.io	annotate-snippets	`0.11.5`	direct
crates.io	bitflags	`2.9.1`	direct
crates.io	cexpr	`0.6.0`	direct
crates.io	clang-sys	`1.8.1`	direct
crates.io	clap	`4.4.18`	direct
crates.io	clap_complete	`4.4.10`	direct
crates.io	env_logger	`0.10.2`	direct
crates.io	env_logger	`0.8.4`	direct
crates.io	log	`0.4.27`	direct
crates.io	prettyplease	`0.2.35`	direct
crates.io	proc-macro2	`1.0.95`	direct
crates.io	quote	`1.0.40`	direct
crates.io	regex	`1.11.1`	direct
crates.io	rustc-hash	`2.1.1`	direct
crates.io	shlex	`2.0.1`	direct
crates.io	syn	`2.0.104`	direct
crates.io	aho-corasick	`1.1.3`	indirect
crates.io	anstream	`0.6.19`	indirect
crates.io	anstyle	`1.0.11`	indirect
crates.io	anstyle-parse	`0.2.7`	indirect
crates.io	anstyle-query	`1.1.3`	indirect
crates.io	anstyle-wincon	`3.0.9`	indirect
crates.io	block	`0.1.6`	indirect
crates.io	cc	`1.2.63`	indirect
crates.io	cfg-if	`1.0.1`	indirect
crates.io	clap_builder	`4.4.18`	indirect
crates.io	clap_derive	`4.4.7`	indirect
crates.io	clap_lex	`0.6.0`	indirect
crates.io	colorchoice	`1.0.4`	indirect
crates.io	errno	`0.3.13`	indirect
crates.io	fastrand	`2.3.0`	indirect
crates.io	find-msvc-tools	`0.1.9`	indirect
crates.io	getrandom	`0.2.16`	indirect
crates.io	getrandom	`0.3.3`	indirect
crates.io	glob	`0.3.2`	indirect
crates.io	heck	`0.4.1`	indirect
crates.io	hermit-abi	`0.5.2`	indirect
crates.io	humantime	`2.2.0`	indirect
crates.io	is-terminal	`0.4.16`	indirect
crates.io	is_terminal_polyfill	`1.70.1`	indirect
crates.io	libc	`0.2.186`	indirect
crates.io	libloading	`0.8.8`	indirect
crates.io	linux-raw-sys	`0.12.1`	indirect
crates.io	malloc_buf	`0.0.6`	indirect
crates.io	memchr	`2.7.5`	indirect
crates.io	minimal-lexical	`0.2.1`	indirect
crates.io	nom	`7.1.3`	indirect
crates.io	objc	`0.2.7`	indirect
crates.io	once_cell	`1.21.3`	indirect
crates.io	once_cell_polyfill	`1.70.1`	indirect
crates.io	owo-colors	`4.2.2`	indirect
crates.io	quickcheck	`1.0.3`	indirect
crates.io	r-efi	`5.3.0`	indirect
crates.io	rand	`0.8.5`	indirect
crates.io	rand_core	`0.6.4`	indirect
crates.io	regex-automata	`0.4.9`	indirect
crates.io	regex-syntax	`0.8.5`	indirect
crates.io	rustix	`1.1.4`	indirect
crates.io	similar	`2.7.0`	indirect
crates.io	strsim	`0.10.0`	indirect
crates.io	tempfile	`3.27.0`	indirect
crates.io	termcolor	`1.4.1`	indirect
crates.io	unicode-ident	`1.0.18`	indirect
crates.io	unicode-width	`0.2.1`	indirect
crates.io	utf8parse	`0.2.2`	indirect
crates.io	wasi	`0.11.1+wasi-snapshot-preview1`	indirect
crates.io	wasi	`0.14.2+wasi-0.2.4`	indirect
crates.io	winapi-util	`0.1.9`	indirect
crates.io	windows-sys	`0.59.0`	indirect
crates.io	windows-targets	`0.52.6`	indirect
crates.io	windows_aarch64_gnullvm	`0.52.6`	indirect
crates.io	windows_aarch64_msvc	`0.52.6`	indirect
crates.io	windows_i686_gnu	`0.52.6`	indirect
crates.io	windows_i686_gnullvm	`0.52.6`	indirect
crates.io	windows_i686_msvc	`0.52.6`	indirect
crates.io	windows_x86_64_gnu	`0.52.6`	indirect
crates.io	windows_x86_64_gnullvm	`0.52.6`	indirect
crates.io	windows_x86_64_msvc	`0.52.6`	indirect
crates.io	wit-bindgen-rt	`0.39.0`	indirect

Dependency advisories 1

This repository publishes no package the index resolves, so its own dependency graph was assessed — 79 packages, which also include development and test pins that never ship: 1 carry known advisories, of which 0 are direct.

Package	Version	Relation	Severity	Advisories	Fixed in
rand	`0.8.5`	indirect	low	2	`0.10.1`

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

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 v2.5.0, schema v0.31.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — crates.io.

Software health index

Score profile

Ownership

Package ecosystems

Metrics by category

Key facts

Data collection warnings

More detail

Related records