Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-05 14:30 UTC

bytecodealliance / wit-bindgen

A language binding generator for WebAssembly interface types

RustApache-2.0★ 1,450 stars⑂ 287 forkssince Feb 2021View on GitHub ↗
KindCommand-line toolLibraryhow this is determined

bytecodealliance/wit-bindgen 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 7 days ago. 2 contributors account 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

Bytecode AllianceOrganization · verified domain
2,113 followers103 public repossince Aug 2019

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
crates.iowit-bindgen-cli0.61.13,7236910 days ago

Metrics by category

Vitality

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

93Exceptional · 21% of overall
How it's scored
36/36Push recencylast push 7 days ago
31.2/36Commit cadence45/52 weeks with commits
18/18Commit volume190 commits in the last year
10/10OpenSSF Scorecard: Maintained30 commit(s) and 15 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year190
human_commit_share0.89
days_since_last_push7
active_weeks_last_year45
How it's scored
27/27Ships releases67 releases published
36/36Release recencylatest release 10 days ago
27/27Release cadencea release every ~18 days
0/10OpenSSF Scorecard: Signed-ReleasesProject has not signed or included provenance with any releases.
Inputs used
releases_count67
latest_release_tagv0.61.1
releases_from_tagsno
days_since_latest_release10
mean_days_between_releases18

Community & Adoption

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

64Moderate · 17% of overall
How it's scored
51.3/60Stars1,450 stars
20.5/25Forks287 forks
8/15Watchers29 watchers
Inputs used
forks287
stars1,450
watchers29
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized license (Apache-2.0)
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
47.6/80Monthly downloads3,723 downloads/month across crates
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packageswit-bindgen-cli
dependents
ecosystemscrates
total_downloads191,740
monthly_downloads3,723
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?

83Excellent · 23% of overall
How it's scored
25.2/54Bus factor2 contributor(s) cover half of all commits
12.7/22.5Commit distributiontop contributor authored 43% of commits
13.5/13.5Contributor breadth99 contributors
10/10OpenSSF Scorecard: Contributorsproject has 41 contributing companies or organizations
Inputs used
bus_factor2
contributors_sampled99
top_contributor_share0.434
How it's scored
30.7/42Issue resolution73% of issues closed
27.9/30PR acceptance1,064/1,144 decided PRs merged
6.5/13Newcomer PR acceptance1/2 first-time contributors' PRs merged in 30d
15/15OpenSSF Scorecard: Code-Reviewall changesets reviewed
Inputs used
merged_prs1,064
open_issues139
closed_issues375
prs_merged_7d0
prs_decided_7d0
prs_merged_30d15
prs_decided_30d17
issue_closed_ratio0.73
closed_unmerged_prs80
first_time_authors_30d1
first_time_prs_merged_30d1
first_time_prs_decided_30d2
How it's scored
30/30Ownership backingorganization-owned
20/20Verified domain
23.9/25Owner reach2,113 followers of bytecodealliance
25/25Track record103 public repos, account ~7 yr old
Inputs used
followers2,113
owner_typeOrganization
is_verifiedyes
owner_loginbytecodealliance
public_repos103
account_age_days2,580

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable1 package(s) on crates
35/35Publish recencylatest publish 10 days ago
20/20Version history69 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packageswit-bindgen-cli
ecosystemscrates
any_deprecatedno
min_days_since_publish10

Engineering Quality

Are baseline engineering and documentation practices in place?

73Good · 19% of overall
How it's scored
24/24CI workflows3 workflow(s)
24/24Tests present
16/16Linter configCargo.toml ([lints], [workspace.lints])
0/9.6Pre-commit hooks
0/6.4.editorconfig
14/20OpenSSF Scorecard: CI-Tests22 out of 30 merged PRs checked by a CI test -- score normalized to 7
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage sitehttps://docs.rs/wit-bindgen-cli
10/10Repository description
10/10Topics6 topics
0/10Wiki
Inputs used
topicswebassembly, interface-types, wasi, rust, module-linking, wasmtime
has_wikino
homepage
docs_sitehttps://docs.rs/wit-bindgen-cli
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

54Moderate · 16% of overall
How it's scored
3/7.5Binary-Artifactsbinaries present in source code
0/7.5Branch-Protectionno data
1.8/2.5CI-Tests22 out of 30 merged PRs checked by a CI test -- score normalized to 7
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
7.5/7.5Code-Reviewall changesets reviewed
2.5/2.5Contributorsproject has 41 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
0/7.5Dependency-Update-Toolno update tool detected
0/5Fuzzingproject is not fuzzed
2.5/2.5Licenselicense file detected
7.5/7.5Maintained30 commit(s) and 15 issue activity found in the last 90 days -- score normalized to 10
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-ReleasesProject has not signed or included provenance with any releases.
0/7.5Token-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): Branch-Protection, Packaging. Remaining weights renormalized.
How it's scored
26.6/35Direct dependencies free of known advisories1 affected: anyhow 1.0.102 (unknown)
0/25Indirect dependencies free of known advisoriestransitive set not separable from development and test dependencies in this scope
40/40No advisories left outstandingno advisory has been public longer than 90 days
Inputs used
sourceosv
advisories1
affected_packages1
assessed_packages159
unassessed_packages15
affected_by_severityunknown 1
direct_affected_packages1
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories. Remaining weights renormalized. Matched 159 resolved dependencies against OSV. 15 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. 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.

69Good · 4% of overall
How it's scored
0/45Agent instructionsno CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history89 of 89 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share1
agent_instruction_files
agent_instruction_max_bytes
How it's scored
12.6/18One-command bootstrapCargo.toml, crates/c/Cargo.toml, crates/core/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format configCargo.toml ([lints], [workspace.lints])
11/11Static type checkingRust (statically typed)
10/10Reproducible environmentdevcontainer, Dockerfile, lockfile
0/10Demonstrated agent practiceno agent-authored commits among the last 100
0/8Automated maintenanceno automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfilesCargo.lock
has_dockerfileyes
typed_languageyes
bootstrap_files
has_devcontaineryes
has_linter_configyes
typecheck_configs
agent_commit_share0
toolchain_manifestsCargo.toml, crates/c/Cargo.toml, crates/core/Cargo.toml, crates/cpp/Cargo.toml, crates/csharp/Cargo.toml, crates/d/Cargo.toml, crates/go/Cargo.toml, crates/guest-rust/Cargo.toml, crates/guest-rust/macro/Cargo.toml, crates/markdown/Cargo.toml, crates/moonbit/Cargo.toml, crates/rust/Cargo.toml, crates/test-helpers/Cargo.toml, crates/test-helpers/codegen-macro/Cargo.toml, crates/test/Cargo.toml
dependency_bot_commit_share0
How it's scored
45/45Type-checkable codeRust (statically typed)
53.6/55Manageable file sizes12/470 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes160,815
source_files_sampled470
oversized_source_files12
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 examplesexamples
Inputs used
example_dirsexamples
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

1,450GitHub stars
99contributors
190commits, last 12 months
7days since last push
67releases
2bus factor
139open issues
crates.iopackage ecosystems

Data collection warnings

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

More detail

Star and fork history 0 ★ / 287 ⇿
0Stars
287Forks
67Releases

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.

05010015020025030025842021-052024-012026-09
Major 0Minor 43Patch 8

Each point covers 5 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 · 2026-09-05 14:29 UTC

4Binary-Artifactsbinaries present in source code
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
7CI-Tests22 out of 30 merged PRs checked by a CI test -- score normalized to 7
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
10Code-Reviewall changesets reviewed
10Contributorsproject has 41 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 15 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
0Signed-ReleasesProject has not signed or included provenance with any releases.
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
9Vulnerabilities1 existing vulnerabilities detected
Direct dependencies 15
RegistryPackageVersion constraintManifest
crates.ioanyhowCargo.toml
crates.ioclapCargo.toml
crates.iowit-bindgen-coreCargo.toml
crates.iowit-bindgen-rustCargo.toml
crates.iowit-bindgen-cCargo.toml
crates.iowit-bindgen-cppCargo.toml
crates.iowit-bindgen-markdownCargo.toml
crates.iowit-bindgen-moonbitCargo.toml
crates.iowit-bindgen-csharpCargo.toml
crates.iowit-bindgen-goCargo.toml
crates.iowit-bindgen-dCargo.toml
crates.iowit-bindgen-testCargo.toml
crates.iowit-componentCargo.toml
crates.iowasm-encoderCargo.toml
crates.ioenv_logger0.11.7Cargo.toml
All dependencies 174

Full resolved dependency set from the GitHub dependency graph: 6 direct and 168 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioanyhow1.0.102direct
crates.ioclap4.6.1direct
crates.ioenv_logger0.11.10direct
crates.iowasm-encoder0.247.0direct
crates.iowasm-encoder0.258.0direct
crates.iowit-component0.258.0direct
crates.ioadler22.0.1indirect
crates.ioahash0.8.12indirect
crates.ioaho-corasick1.1.4indirect
crates.ioallocator-api20.2.21indirect
crates.ioanstream1.0.0indirect
crates.ioanstyle1.0.14indirect
crates.ioanstyle-parse1.0.0indirect
crates.ioanstyle-query1.1.5indirect
crates.ioanstyle-wincon3.0.11indirect
crates.ioarraydeque0.5.1indirect
crates.ioauditable-serde0.9.0indirect
crates.iobeef0.5.2indirect
crates.iobitflags2.13.0indirect
crates.iobumpalo3.20.3indirect
crates.iobytesindirect
crates.iobytes1.11.1indirect
crates.iocfg-if1.0.4indirect
crates.ioclap_builder4.6.0indirect
crates.ioclap_derive4.6.1indirect
crates.ioclap_lex1.1.0indirect
crates.iocolorchoice1.0.5indirect
crates.iocrc32fast1.5.0indirect
crates.iodisplaydoc0.2.6indirect
crates.ioencoding_rs0.8.35indirect
crates.ioenv_filter1.0.1indirect
crates.ioequivalent1.0.2indirect
crates.ioerrno0.3.14indirect
crates.ioescape82590.5.3indirect
crates.iofixedbitset0.4.2indirect
crates.ioflate21.1.9indirect
crates.iofnv1.0.7indirect
crates.iofoldhash0.2.0indirect
crates.ioform_urlencoded1.2.2indirect
crates.iofuturesindirect
crates.iofutures0.3.32indirect
crates.iofutures-channel0.3.32indirect
crates.iofutures-core0.3.32indirect
crates.iofutures-executor0.3.32indirect
crates.iofutures-io0.3.32indirect
crates.iofutures-macro0.3.32indirect
crates.iofutures-sink0.3.32indirect
crates.iofutures-task0.3.32indirect
crates.iofutures-util0.3.32indirect
crates.iohashbrown0.14.5indirect
crates.iohashbrown0.17.1indirect
crates.iohashlink0.8.4indirect
crates.ioheck0.5.0indirect
crates.ioicu_collections2.2.0indirect
crates.ioicu_locale_core2.2.0indirect
crates.ioicu_normalizer2.2.0indirect
crates.ioicu_normalizer_data2.2.0indirect
crates.ioicu_properties2.2.0indirect
crates.ioicu_properties_data2.2.0indirect
crates.ioicu_provider2.2.0indirect
crates.ioid-arena2.3.0indirect
crates.ioidna1.1.0indirect
crates.ioidna_adapter1.2.2indirect
crates.ioindexmap2.14.0indirect
crates.iois_terminal_polyfill1.70.2indirect
crates.ioitoa1.0.18indirect
crates.iojiff0.2.28indirect
crates.iojiff-static0.2.28indirect
crates.iolazy_static1.5.0indirect
crates.ioleb128fmt0.1.0indirect
crates.iolibc0.2.186indirect
crates.iolibtest-mimicindirect
crates.iolibtest-mimic0.8.2indirect
crates.iolinux-raw-sys0.12.1indirect
crates.iolitemap0.8.2indirect
crates.iologindirect
crates.iolog0.4.32indirect
crates.iologos0.14.4indirect
crates.iologos-codegen0.14.4indirect
crates.iologos-derive0.14.4indirect
crates.iomacro-string0.2.0indirect
crates.iomemchr2.8.1indirect
crates.iomiette7.6.0indirect
crates.iomiette-derive7.6.0indirect
crates.iominiz_oxide0.8.9indirect
crates.ioonce_cell1.21.4indirect
crates.ioonce_cell_polyfill1.70.2indirect
crates.iopercent-encoding2.3.2indirect
crates.iopetgraph0.6.5indirect
crates.iopin-project-lite0.2.17indirect
crates.ioportable-atomic1.13.1indirect
crates.ioportable-atomic-util0.2.7indirect
crates.iopotential_utf0.1.5indirect
crates.ioprettyplease0.2.37indirect
crates.ioproc-macro2indirect
crates.ioproc-macro21.0.106indirect
crates.iopulldown-cmark0.13.4indirect
crates.iopulldown-cmark-escape0.11.0indirect
crates.ioquoteindirect
crates.ioquote1.0.45indirect
crates.ioregexindirect
crates.ioregex1.12.3indirect
crates.ioregex-automata0.4.14indirect
crates.ioregex-syntax0.8.10indirect
crates.iorustc-std-workspace-allocindirect
crates.iorustc-std-workspace-alloc1.0.1indirect
crates.iorustc-std-workspace-coreindirect
crates.iorustc-std-workspace-core1.0.1indirect
crates.iorustix1.1.4indirect
crates.iosemver1.0.28indirect
crates.ioserde1.0.228indirect
crates.ioserde_core1.0.228indirect
crates.ioserde_derive1.0.228indirect
crates.ioserde_json1.0.150indirect
crates.ioserde_spanned1.1.1indirect
crates.ioserde_yaml20.1.3indirect
crates.iosimd-adler320.3.9indirect
crates.ioslab0.4.12indirect
crates.iosmallvec1.15.1indirect
crates.iospdx0.13.4indirect
crates.iostable_deref_trait1.2.1indirect
crates.iostrsim0.11.1indirect
crates.iosyn2.0.117indirect
crates.iosynstructure0.13.2indirect
crates.ioterminal_size0.4.4indirect
crates.iothiserror1.0.69indirect
crates.iothiserror-impl1.0.69indirect
crates.iotinystr0.8.3indirect
crates.iotomlindirect
crates.iotoml1.1.2+spec-1.1.0indirect
crates.iotoml_datetime1.1.1+spec-1.1.0indirect
crates.iotoml_parser1.1.2+spec-1.1.0indirect
crates.iotoml_writer1.1.1+spec-1.1.0indirect
crates.iotopological-sort0.2.2indirect
crates.iounicase2.9.0indirect
crates.iounicode-ident1.0.24indirect
crates.iounicode-width0.1.14indirect
crates.iounicode-width0.2.2indirect
crates.iourl2.5.8indirect
crates.ioutf8_iter1.0.4indirect
crates.ioutf8parse0.2.2indirect
crates.ioversion_check0.9.5indirect
crates.iowac-graphindirect
crates.iowac-graph0.10.0indirect
crates.iowac-parserindirect
crates.iowac-parser0.10.0indirect
crates.iowac-typesindirect
crates.iowac-types0.10.0indirect
crates.iowasi-preview1-component-adapter-providerindirect
crates.iowasi-preview1-component-adapter-provider46.0.1indirect
crates.iowasm-compose0.258.0indirect
crates.iowasm-metadata0.247.0indirect
crates.iowasm-metadata0.258.0indirect
crates.iowasmparser0.247.0indirect
crates.iowasmparser0.258.0indirect
crates.iowast258.0.0indirect
crates.iowat1.258.0indirect
crates.iowindows-link0.2.1indirect
crates.iowindows-sys0.61.2indirect
crates.iowinnow1.0.3indirect
crates.iowit-bindgen-rust-macroindirect
crates.iowit-parser0.258.0indirect
crates.iowriteable0.6.3indirect
crates.ioyaml-rust20.8.1indirect
crates.ioyoke0.8.3indirect
crates.ioyoke-derive0.8.2indirect
crates.iozerocopy0.8.50indirect
crates.iozerocopy-derive0.8.50indirect
crates.iozerofrom0.1.8indirect
crates.iozerofrom-derive0.1.7indirect
crates.iozerotrie0.2.4indirect
crates.iozerovec0.11.6indirect
crates.iozerovec-derive0.11.3indirect
crates.iozmij1.0.21indirect
Dependency advisories 1

This repository publishes no package the index resolves, so its own dependency graph was assessed — 159 packages, which also include development and test pins that never ship: 1 carry known advisories, of which 1 are direct. 15 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

PackageVersionRelationSeverityAdvisoriesFixed in
anyhow1.0.102directunknown11.0.103

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 v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticscrates.io.