Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-08-29 14:07 UTC

in-toto / attestation

in-toto Attestation Framework

RustCustom license★ 369 stars⑂ 124 forkssince Apr 2021View on GitHub ↗

in-toto/attestation holds a health index of 92 out of 100, placing it in the Excellent band. It scores highest on Engineering Quality (90/100) and lowest on Community & Adoption (61/100). It was last updated 4 days ago. 3 contributors account for most of its recent work.

92
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.

92
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 78 is calibrated to 92 on the published index scale (record calibration 2026-08-02).

Ownership

in-totoOrganization
228 followers43 public repossince Oct 2016

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
Gogithub.com/in-toto/attestationv1.2.0-7163 days ago
crates.ioin_toto_attestation0.1.03251365 days ago
PyPIin-toto-attestation0.9.344,0404989 days agoin-totosecurityslsasoftware-supply-chain

Metrics by category

Vitality

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

82Excellent · 21% of overall
How it's scored
36/36Push recencylast push 4 days ago
24.2/36Commit cadence35/52 weeks with commits
18/18Commit volume124 commits in the last year
10/10OpenSSF Scorecard: Maintained30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year124
human_commit_share0.59
days_since_last_push4
active_weeks_last_year35
How it's scored
27/27Ships releases7 releases published
27/36Release recencylatest release 163 days ago
12.6/27Release cadencea release every ~182 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count7
latest_release_tagv1.2.0
releases_from_tagsno
days_since_latest_release163
mean_days_between_releases182
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?

61Moderate · 17% of overall
How it's scored
41.6/60Stars369 stars
17.4/25Forks124 forks
7/15Watchers19 watchers
Inputs used
forks124
stars369
watchers19
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
16.9/22.5Licenselicense file present, not a recognized license
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
How it's scored
62/80Monthly downloads44,365 downloads/month across crates, go, pypi
0/20Registry dependentsnot reported by this ecosystem
Inputs used
packagesgithub.com/in-toto/attestation, in_toto_attestation, in-toto-attestation
dependents
ecosystemscrates, go, pypi
total_downloads2,862
monthly_downloads44,365
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?

79Good · 23% of overall
How it's scored
36/54Bus factor3 contributor(s) cover half of all commits
17.3/22.5Commit distributiontop contributor authored 23% of commits
13.5/13.5Contributor breadth37 contributors
10/10OpenSSF Scorecard: Contributorsproject has 61 contributing companies or organizations
Inputs used
bus_factor3
contributors_sampled37
top_contributor_share0.23
How it's scored
26.1/42Issue resolution62% of issues closed
26.5/30PR acceptance366/415 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_prs366
open_issues59
closed_issues97
prs_merged_7d0
prs_decided_7d0
prs_merged_30d1
prs_decided_30d2
issue_closed_ratio0.622
closed_unmerged_prs49
first_time_authors_30d2
first_time_prs_merged_30d1
first_time_prs_decided_30d2
How it's scored
30/30Ownership backingorganization-owned
0/20Verified domain
17/25Owner reach228 followers of in-toto
24/25Track record43 public repos, account ~9 yr old
Inputs used
followers228
owner_typeOrganization
is_verifiedno
owner_loginin-toto
public_repos43
account_age_days3,602

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable3 package(s) on crates, go, pypi
35/35Publish recencylatest publish 163 days ago
20/20Version history7 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagesgithub.com/in-toto/attestation, in_toto_attestation, in-toto-attestation
ecosystemscrates, go, pypi
any_deprecatedno
min_days_since_publish163

Engineering Quality

Are baseline engineering and documentation practices in place?

90Excellent · 19% of overall
How it's scored
24/24CI workflows5 workflow(s)
24/24Tests present
16/16Linter configpython/pyproject.toml ([tool.ruff])
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests16 out of 16 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configyes
has_precommit_configno

Documentation

100Exceptional
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage sitehttps://in-toto.io
10/10Repository description
10/10Topics2 topics
10/10Wiki
Inputs used
topicssoftware-supply-chain-security, attestation
has_wikiyes
homepage
docs_sitehttps://in-toto.io
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

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

75Good · 16% of overall
How it's scored
7.5/7.5Binary-Artifactsno binaries found in the repo
0/7.5Branch-Protectionno data
2.5/2.5CI-Tests16 out of 16 merged PRs checked by a CI test -- score normalized to 10
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 61 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
7.5/7.5Dependency-Update-Toolupdate tool detected
0/5Fuzzingproject is not fuzzed
2.2/2.5Licenselicense file detected
7.5/7.5Maintained30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
0/5Packagingno data
5/5Pinned-Dependenciesall dependencies are pinned
0/5SASTSAST tool is not run on all commits -- score normalized to 0
0/5Security-Policysecurity policy file not detected
0/7.5Signed-Releasesno data
0/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
6.8/7.5Vulnerabilities1 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate6.9
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisoriesno direct dependency carries a known advisory
0/25Indirect dependencies free of known advisoriestransitive set not separable from development and test dependencies in this scope
0/40No advisories left outstandingno advisory carries a publication date
Inputs used
sourceosv
advisories1
affected_packages1
assessed_packages130
unassessed_packages1
affected_by_severityunknown 1
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 130 resolved dependencies against OSV. 1 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.

77Good · 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 history50 of 59 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url
legible_history_share0.847
agent_instruction_files
agent_instruction_max_bytes
How it's scored
18/18One-command bootstrapMakefile, images/Makefile, protos/Makefile, python/Makefile
22/22Automated tests
11/11Lint / format configpython/pyproject.toml ([tool.ruff])
11/11Static type checkingRust (statically typed)
10/10Reproducible environmentlockfile
0/10Demonstrated agent practiceno agent-authored commits among the last 100
8/8Automated maintenance40 of the last 100 commits are automated dependency updates
10/10OpenSSF Scorecard: Pinned-Dependenciesall dependencies are pinned
Inputs used
has_nixno
has_testsyes
lockfilesCargo.lock, go.sum, package-lock.json
has_dockerfileno
typed_languageyes
bootstrap_filesMakefile, images/Makefile, protos/Makefile, python/Makefile
has_devcontainerno
has_linter_configyes
typecheck_configs
agent_commit_share0
toolchain_manifestsgo.mod, rust/Cargo.toml
dependency_bot_commit_share0.4
How it's scored
45/45Type-checkable codeRust (statically typed)
48.6/55Manageable file sizes13/112 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes289,335
source_files_sampled112
oversized_source_files13
How it's scored
40/40API schema (OpenAPI/GraphQL/proto)protos/in_toto_attestation/predicates/link/v0/link.proto, protos/in_toto_attestation/predicates/provenance/v0.1/provenance.proto, protos/in_toto_attestation/predicates/provenance/v0.2/provenance.proto, protos/in_toto_attestation/predicates/provenance/v1/provenance.proto, protos/in_toto_attestation/predicates/reference/v0/reference.proto, protos/in_toto_attestation/predicates/release/v0.1/release.proto, protos/in_toto_attestation/predicates/release/v0.2/release.proto, protos/in_toto_attestation/predicates/scai/v0/scai.proto, protos/in_toto_attestation/predicates/svr/v0.1/svr.proto, protos/in_toto_attestation/predicates/test_result/v0/test_result.proto, protos/in_toto_attestation/predicates/vsa/v0/vsa.proto, protos/in_toto_attestation/predicates/vsa/v1/vsa.proto, protos/in_toto_attestation/predicates/vulns/v0.1/vulns.proto, protos/in_toto_attestation/predicates/vulns/v0.2/vulns.proto, protos/in_toto_attestation/v1/resource_descriptor.proto, protos/in_toto_attestation/v1/statement.proto
0/20MCP servernot applicable to this kind of software
40/40Runnable examplesexamples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_filesprotos/in_toto_attestation/predicates/link/v0/link.proto, protos/in_toto_attestation/predicates/provenance/v0.1/provenance.proto, protos/in_toto_attestation/predicates/provenance/v0.2/provenance.proto, protos/in_toto_attestation/predicates/provenance/v1/provenance.proto, protos/in_toto_attestation/predicates/reference/v0/reference.proto, protos/in_toto_attestation/predicates/release/v0.1/release.proto, protos/in_toto_attestation/predicates/release/v0.2/release.proto, protos/in_toto_attestation/predicates/scai/v0/scai.proto, protos/in_toto_attestation/predicates/svr/v0.1/svr.proto, protos/in_toto_attestation/predicates/test_result/v0/test_result.proto, protos/in_toto_attestation/predicates/vsa/v0/vsa.proto, protos/in_toto_attestation/predicates/vsa/v1/vsa.proto, protos/in_toto_attestation/predicates/vulns/v0.1/vulns.proto, protos/in_toto_attestation/predicates/vulns/v0.2/vulns.proto, protos/in_toto_attestation/v1/resource_descriptor.proto, protos/in_toto_attestation/v1/statement.proto
interfaces_expected_of
Excluded from scoring (no data or not applicable): MCP server. Remaining weights renormalized.

Key facts

369GitHub stars
37contributors
124commits, last 12 months
4days since last push
7releases
3bus factor
59open issues
crates.io, Go, npm, PyPIpackage ecosystems

Data collection warnings

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

More detail

Star and fork history 0 ★ / 124 ⇿
0Stars
124Forks
7Releases

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.

025507510012512132021-042023-122026-08
Major 0Minor 2Patch 4

Each point covers 5 days.

OpenSSF Scorecard 6.9 / 10
6.9aggregate

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 · 2026-08-29 14:07 UTC

10Binary-Artifactsno binaries found in the repo
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
10CI-Tests16 out of 16 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
10Code-Reviewall changesets reviewed
10Contributorsproject has 61 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
9Licenselicense file detected
10Maintained30 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
10Pinned-Dependenciesall dependencies are pinned
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
9Vulnerabilities1 existing vulnerabilities detected
Direct dependencies 8
RegistryPackageVersion constraintManifest
Gogithub.com/stretchr/testifyv1.12.1go.mod
Gogoogle.golang.org/protobufv1.36.12go.mod
npmmarkdownlint-cli^0.49.1package.json
PyPIprotobufpython/pyproject.toml
crates.iohex0.4.3rust/Cargo.toml
crates.ioprotobuf3.7.2rust/Cargo.toml
crates.ioprotobuf-json-mapping3.7.2rust/Cargo.toml
crates.iothiserror2.0.12rust/Cargo.toml
All dependencies 131

Full resolved dependency set from the GitHub dependency graph: 10 direct and 121 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.iohex0.4.3direct
crates.ioprotobuf3.7.2direct
crates.ioprotobuf-json-mapping3.7.2direct
crates.iothiserror1.0.69direct
crates.iothiserror2.0.12direct
Gogithub.com/stretchr/testifyv1.12.1direct
Gogoogle.golang.org/protobufv1.36.12direct
npmmarkdownlint-cli0.49.1direct
PyPIprotobufdirect
PyPIprotobuf5.29.6direct
crates.ioaho-corasick1.1.3indirect
crates.ioanyhow1.0.98indirect
crates.iobitflags2.9.1indirect
crates.iocfg-if1.0.0indirect
crates.ioeither1.15.0indirect
crates.ioequivalent1.0.2indirect
crates.ioerrno0.3.12indirect
crates.iofastrand2.3.0indirect
crates.iogetrandom0.3.3indirect
crates.iohashbrown0.15.3indirect
crates.iohome0.5.11indirect
crates.ioindexmap2.9.0indirect
crates.iolibc0.2.172indirect
crates.iolinux-raw-sys0.4.15indirect
crates.iolinux-raw-sys0.9.4indirect
crates.iolog0.4.27indirect
crates.iomemchr2.7.4indirect
crates.ioonce_cell1.21.3indirect
crates.ioproc-macro21.0.95indirect
crates.ioprotobuf-codegen3.7.2indirect
crates.ioprotobuf-parse3.7.2indirect
crates.ioprotobuf-support3.7.2indirect
crates.ioquote1.0.40indirect
crates.ior-efi5.2.0indirect
crates.ioregex1.11.1indirect
crates.ioregex-automata0.4.9indirect
crates.ioregex-syntax0.8.5indirect
crates.iorustix0.38.44indirect
crates.iorustix1.0.7indirect
crates.iosyn2.0.101indirect
crates.iotempfile3.20.0indirect
crates.iothiserror-impl1.0.69indirect
crates.iothiserror-impl2.0.12indirect
crates.iounicode-ident1.0.18indirect
crates.iowasi0.14.2+wasi-0.2.4indirect
crates.iowhich4.4.2indirect
crates.iowindows-sys0.59.0indirect
crates.iowindows-targets0.52.6indirect
crates.iowindows_aarch64_gnullvm0.52.6indirect
crates.iowindows_aarch64_msvc0.52.6indirect
crates.iowindows_i686_gnu0.52.6indirect
crates.iowindows_i686_gnullvm0.52.6indirect
crates.iowindows_i686_msvc0.52.6indirect
crates.iowindows_x86_64_gnu0.52.6indirect
crates.iowindows_x86_64_gnullvm0.52.6indirect
crates.iowindows_x86_64_msvc0.52.6indirect
crates.iowit-bindgen-rt0.39.0indirect
Gogo.yaml.in/yaml/v3v3.0.5indirect
npm@types/debug4.1.13indirect
npm@types/katex0.16.8indirect
npm@types/ms2.1.0indirect
npm@types/unist2.0.11indirect
npmansi-regex6.2.2indirect
npmargparse2.0.1indirect
npmbalanced-match4.0.4indirect
npmbrace-expansion5.0.9indirect
npmcharacter-entities2.0.2indirect
npmcharacter-entities-legacy3.0.0indirect
npmcharacter-reference-invalid2.0.1indirect
npmcommander15.0.0indirect
npmcommander8.3.0indirect
npmdebug4.4.3indirect
npmdecode-named-character-reference1.3.0indirect
npmdeep-extend0.6.0indirect
npmdequal2.0.3indirect
npmdevlop1.1.0indirect
npmentities4.5.0indirect
npmfdir6.5.0indirect
npmget-east-asian-width1.6.0indirect
npmignore7.0.6indirect
npmini7.0.0indirect
npmis-alphabetical2.0.1indirect
npmis-alphanumerical2.0.1indirect
npmis-decimal2.0.1indirect
npmis-hexadecimal2.0.1indirect
npmjs-yaml5.2.2indirect
npmjsonc-parser3.3.1indirect
npmjsonpointer5.0.1indirect
npmkatex0.16.47indirect
npmlinkify-it5.0.2indirect
npmmarkdown-it14.3.0indirect
npmmarkdownlint0.41.1indirect
npmmdurl2.0.0indirect
npmmicromark4.0.2indirect
npmmicromark-core-commonmark2.0.3indirect
npmmicromark-extension-directive4.0.0indirect
npmmicromark-extension-gfm-autolink-literal2.1.0indirect
npmmicromark-extension-gfm-footnote2.1.0indirect
npmmicromark-extension-gfm-table2.1.1indirect
npmmicromark-extension-math3.1.0indirect
npmmicromark-factory-destination2.0.1indirect
npmmicromark-factory-label2.0.1indirect
npmmicromark-factory-space2.0.1indirect
npmmicromark-factory-title2.0.1indirect
npmmicromark-factory-whitespace2.0.1indirect
npmmicromark-util-character2.1.1indirect
npmmicromark-util-chunked2.0.1indirect
npmmicromark-util-classify-character2.0.1indirect
npmmicromark-util-combine-extensions2.0.1indirect
npmmicromark-util-decode-numeric-character-reference2.0.2indirect
npmmicromark-util-encode2.0.1indirect
npmmicromark-util-html-tag-name2.0.1indirect
npmmicromark-util-normalize-identifier2.0.1indirect
npmmicromark-util-resolve-all2.0.1indirect
npmmicromark-util-sanitize-uri2.0.1indirect
npmmicromark-util-subtokenize2.1.0indirect
npmmicromark-util-symbol2.0.1indirect
npmmicromark-util-types2.0.2indirect
npmminimatch10.2.5indirect
npmminimist1.2.8indirect
npmms2.1.3indirect
npmparse-entities4.0.2indirect
npmpicomatch4.0.4indirect
npmpunycode.js2.3.1indirect
npmrun-con1.3.3indirect
npmsmol-toml1.7.0indirect
npmstring-width8.2.1indirect
npmstrip-ansi7.2.0indirect
npmstrip-json-comments3.1.1indirect
npmtinyglobby0.2.17indirect
npmuc.micro2.1.0indirect
Dependency advisories 1

This repository publishes no package the index resolves, so its own dependency graph was assessed — 130 packages, which also include development and test pins that never ship: 1 carry known advisories, of which 0 are direct. 1 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

PackageVersionRelationSeverityAdvisoriesFixed in
anyhow1.0.98indirectunknown11.0.103

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 statisticsGo, crates.io, PyPI.