Public recordModerate
Software health reportschema 0.27.0 · metrics 1.13.0 · 2026-07-22 23:50 UTC
matklad / once_cell
Rust library for single assignment cells and lazy statics without macros
matklad/once_cell holds a health index of 58 out of 100, placing it in the Moderate band. It scores highest on Community & Adoption (74/100) and lowest on Vitality (41/100). It was last updated 132 days ago. A single contributor accounts for most of its recent work.
58
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.
58
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe 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.
Ownership
Alex KladovPersonal account
7,023 followers506 public repossince May 2012@tigerbeetle
This repository is owned by a personal account. A single-owner project carries more continuity risk than an organization-backed one.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| crates.io | once_cell | 1.21.4 | 78,627,093 | 67 | 132 days ago | lazystaticmemory-managementrust-patterns |
| crates.io | xtaskpoints to another repo — not scored | 0.1.4 | 183 | 5 | 22 days ago | automationmacosreleasecodesignxtaskcommand-line-utilities |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
41
Development activity
21Critical
How it's scored
| 9.9/36 | Push recency — last push 132 days ago |
| 2.8/36 | Commit cadence — 4/52 weeks with commits |
| 8.6/18 | Commit volume — 8 commits in the last year |
| 0/10 | OpenSSF Scorecard: Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
Inputs used
| commits_last_year | 8 |
| human_commit_share | 0.87 |
| days_since_last_push | 132 |
| active_weeks_last_year | 4 |
Release discipline
70Good
How it's scored
| 16.2/27 | Ships releases — 55 version tags (no GitHub releases) |
| 27/36 | Release recency — latest release 132 days ago |
| 19.8/27 | Release cadence — a release every ~91.8 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 55 |
| latest_release_tag | v1.21.4 |
| releases_from_tags | yes |
| days_since_latest_release | 132 |
| mean_days_between_releases | 91.8 |
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?
74
Popularity & adoption
78Good
How it's scored
| 53.8/60 | Stars — 2,086 stars |
| 17.4/25 | Forks — 123 forks |
| 7/15 | Watchers — 19 watchers |
Inputs used
| forks | 123 |
| stars | 2,086 |
| watchers | 19 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
50Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
100Excellent
How it's scored
| 80/80 | Monthly downloads — 78,627,093 downloads/month across crates |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | once_cell |
| dependents | — |
| ecosystems | crates |
| total_downloads | 1,068,944,837 |
| monthly_downloads | 78,627,093 |
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?
73
Maintainer resilience (bus factor)
42At risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 9.9/22.5 | Commit distribution — top contributor authored 56% of commits |
| 13.5/13.5 | Contributor breadth — 56 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 34 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 56 |
| top_contributor_share | 0.562 |
Issue & PR responsiveness
86Excellent
How it's scored
| 43.9/46.8 | Issue resolution — 94% of issues closed |
| 31.5/38.3 | PR acceptance — 162/197 decided PRs merged |
| 10.5/15 | OpenSSF Scorecard: Code-Review — Found 11/15 approved changesets -- score normalized to 7 |
Inputs used
| merged_prs | 162 |
| open_issues | 6 |
| closed_issues | 92 |
| issue_closed_ratio | 0.939 |
| closed_unmerged_prs | 35 |
Ownership & stewardship
75Good
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 25/25 | Owner reach — 7,023 followers of matklad |
| 25/25 | Track record — 506 public repos, account ~14 yr old |
Inputs used
| followers | 7,023 |
| owner_type | User |
| is_verified | — |
| owner_login | matklad |
| public_repos | 506 |
| account_age_days | 5,190 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
100Excellent
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on crates |
| 35/35 | Publish recency — latest publish 132 days ago |
| 20/20 | Version history — 67 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | once_cell |
| ecosystems | crates |
| any_deprecated | no |
| min_days_since_publish | 132 |
Engineering Quality
Are baseline engineering and documentation practices in place?
56
Engineering practices
54Moderate
How it's scored
| 24/24 | CI workflows — 1 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 6/20 | OpenSSF Scorecard: CI-Tests — 4 out of 13 merged PRs checked by a CI test -- score normalized to 3 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
60Moderate
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 10/10 | Topics — 2 topics |
| 10/10 | Wiki |
Inputs used
| topics | rust, lazy-evaluation |
| has_wiki | yes |
| homepage | — |
| 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?
43
Security posture
43At risk
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — branch protection not enabled on development/release branches |
| 0.8/2.5 | CI-Tests — 4 out of 13 merged PRs checked by a CI test -- score normalized to 3 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 5.2/7.5 | Code-Review — Found 11/15 approved changesets -- score normalized to 7 |
| 2.5/2.5 | Contributors — project has 34 contributing companies or organizations |
| 10/10 | Dangerous-Workflow — no dangerous workflow patterns detected |
| 0/7.5 | Dependency-Update-Tool — no update tool detected |
| 0/5 | Fuzzing — project is not fuzzed |
| 2.5/2.5 | License — license file detected |
| 0/7.5 | Maintained — 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
| 0/5 | Packaging — no data |
| 4/5 | Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 8 |
| 0/5 | SAST — SAST tool is not run on all commits -- score normalized to 0 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 4.3 |
Excluded from scoring (no data or not applicable): packaging, signed_releases. Remaining weights renormalized.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.
50
Agent context & guidance
25Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 25.1/40 | Legible commit history — 41 of 87 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| legible_history_share | 0.471 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Verify loop (build / test / typecheck)
54Moderate
How it's scored
| 12.6/18 | One-command bootstrap — Cargo.toml, xtask/Cargo.toml (toolchain convention, no task runner) |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — Rust (statically typed) |
| 0/10 | Reproducible environment |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 8/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 8 |
Inputs used
| has_nix | no |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | no |
| typed_language | yes |
| bootstrap_files | — |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | Cargo.toml, xtask/Cargo.toml |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Excellent
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 55/55 | Manageable file sizes — 0/20 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 47,322 |
| source_files_sampled | 20 |
| oversized_source_files | 0 |
Machine-readable interfaces
40At risk
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) |
| 0/20 | MCP server |
| 40/40 | Runnable examples — examples |
Inputs used
| example_dirs | examples |
| has_mcp_signal | no |
| api_schema_files | — |
Key facts
2,086GitHub stars
56contributors
8commits, last 12 months
132days since last push
55releases
1bus factor
6open issues
crates.iopackage ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
- crates package 'xtask' points at a different repository (https://github.com/arcboxlabs/xtask); excluded from ecosystem scoring
- No resolved dependencies carried a version and a supported ecosystem
More detail
Star and fork history 0 ★ / 123 ⇿
0Stars
123Forks
55Releases
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 1Minor 22Patch 28
Each point covers 8 days.
OpenSSF Scorecard 4.3 / 10
4.3aggregate
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).
| 10 | Binary-Artifacts | no binaries found in the repo |
| 0 | Branch-Protection | branch protection not enabled on development/release branches |
| 3 | CI-Tests | 4 out of 13 merged PRs checked by a CI test -- score normalized to 3 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 7 | Code-Review | Found 11/15 approved changesets -- score normalized to 7 |
| 10 | Contributors | project has 34 contributing companies or organizations |
| 10 | Dangerous-Workflow | no dangerous workflow patterns detected |
| 0 | Dependency-Update-Tool | no update tool detected |
| 0 | Fuzzing | project is not fuzzed |
| 10 | License | license file detected |
| 0 | Maintained | 0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0 |
| n/a | Packaging | packaging workflow not detected |
| 8 | Pinned-Dependencies | dependency not pinned by hash detected -- score normalized to 8 |
| 0 | SAST | SAST tool is not run on all commits -- score normalized to 0 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 4
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | parking_lot_core | 0.9.10 | Cargo.toml |
| crates.io | portable-atomic | 1.8 | Cargo.toml |
| crates.io | critical-section | 1.1.3 | Cargo.toml |
| crates.io | xshell | 0.2.2 | xtask/Cargo.toml |
All dependencies 5
Full resolved dependency set from the GitHub dependency graph: 4 direct and 1 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | critical-section | — | direct |
| crates.io | parking_lot_core | — | direct |
| crates.io | portable-atomic | — | direct |
| crates.io | xshell | — | direct |
| crates.io | regex | — | indirect |
Dependency advisories not assessed
Advisory matching could not run for this report: No resolved dependencies carried a version and a supported ecosystem
Raw JSON report machine-readable
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"headline": "Merge pull request #295 from matklad/matklad/plfix",
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"body": "…-features\n\nmake the command 'cargo test --no-default-features' work",
"is_bot": false,
"headline": "Merge pull request #290 from alexanderkjall/run-tests-with-no-default…",
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"body": "Fix: `sync::OnceCell::try_insert` docs should import `sync` variant",
"is_bot": false,
"headline": "Merge pull request #292 from phil-opp/doc-fix",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"body": "Closes #295",
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"headline": "fix OnceCell::wait with features=parking_lot",
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"body": "The doc example (i.e. doctest) imported the `unsync` variant of `OnceCell`.",
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"headline": "Fix: `sync::OnceCell::try_insert` docs should import `sync` variant",
"author_name": "Philipp Oppermann",
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"body": null,
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"headline": "make the command 'cargo test --no-default-features' work",
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"body": "Add tests for OnceRef",
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"headline": "Merge pull request #287 from AbeZbm/add-tests",
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"body": "DRY `race::OnceRef::{get_or_try_init, set}`.",
"is_bot": false,
"headline": "Merge pull request #286 from briansmith/b/once-ref-dry",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"headline": "Prepare for 1.21.3 release.",
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"body": "Centralize all the pointer type casting and RMW into a new\n`compare_exchange` function as was done in other types in the module.\nLeave the dereferencing of the pointer in `init()` as `set()` doesn't\never use the old value.",
"is_bot": false,
"headline": "DRY `race::OnceRef::{get_or_try_init, set}`.",
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"body": "Mark initialization of `OnceRef::get_or_try_init` cold.",
"is_bot": false,
"headline": "Merge pull request #285 from briansmith/b/once-ref-cold",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"oid": "a851cc4788eadb2534bc0e3e7468091e0bc795f3",
"body": "Use `Self::get()` instead of directly loading the value, which is a\nDRY improvement in its own right.\n\nThen it is trivial to split out the initialization into a `#[cold]`\nfunction, matching the other implementations in the module.\n\nThis is the `OnceRef` analog of\ncommit 90da60ba44553d893068f42155ba6778dbcf49fb.",
"is_bot": false,
"headline": "Mark initialization of `OnceRef::get_or_try_init` cold.",
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"body": "race: DRY `OnceNonZeroUsize::{init, set}` and `OnceNonZeroUsize::{get, get_or_try_init}`.",
"is_bot": false,
"headline": "Merge pull request #281 from briansmith/b/init-inner",
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"author_login": "matklad",
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"oid": "c294d64f9c52239713e8ee67ab42766066c2d437",
"body": "race: Use `Self` ubiquitously.",
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"headline": "Merge pull request #280 from briansmith/b/self",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"body": "Use `<*const T>::cast_mut()` now that we have MSRV 1.65.",
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"headline": "Merge pull request #283 from briansmith/b/cast_mut",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"body": "Mark initialization of `OnceBox::get_or_try_init` cold.",
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"headline": "Merge pull request #284 from briansmith/b/dry-get",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"body": "Use `Self::get()` instead of directly loading the value, which is a\nDRY improvement in its own right.\n\nThen it is trivial to split out the initialization into a `#[cold]`\nfunction, matching `OnceNonZeroUsize`.",
"is_bot": false,
"headline": "Mark initialization of `OnceBox::get_or_try_init` cold.",
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"body": "Do what the TODO says.\n\nThe awkward construct is to avoid an `as *const T` cast.",
"is_bot": false,
"headline": "Use `<*const T>::cast_mut()` now that we have MSRV 1.65.",
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"body": "The ordering must always be `Acquire`. Make this clearer.",
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"headline": "race: DRY `OnceNonZeroUsize::{get,get_or_try_init}`.",
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"author_login": "briansmith",
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"body": "The `current` value must always be zero and the orderings must always\nbe `Release`/`Acquire`. Make this clearer.",
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"headline": "race: DRY `OnceNonZeroUsize::{init, set}`.",
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"oid": "9df68c0a533dfc0b0886ca140e949b3c9d053f33",
"body": "Avoid repeating type parameters and otherwise make it easier to see\nwhere a function is a constructor.",
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"headline": "race: Use `Self` ubiquitously.",
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"headline": "Merge pull request #278 from briansmith/b/weaken-release",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"oid": "2a707eedb459369687ffdb2183ee82fabaa5d97a",
"body": "…ease`.\n\nSee the analogous change in\nhttps://github.com/rust-lang/rust/pull/131746 and the discussion in\nhttps://github.com/matklad/once_cell/issues/220.\n\nWhat is the effect of this change? Not much, because before we ever\nexecute the `compare_exchange`, we do a load with `Ordering::Acquire`;\nthe `c\n[…]\n:\n- mov r0, #0\n clrex\n-.LBB0_5:\n+ mov r0, #0\n dmb ish\n bx lr\n .LCPI0_0:\n@@ -54,4 +53,3 @@\n\n example::X::h47e2038445e1c648:\n .zero 4\n```",
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"body": "Reduce MSRV to 1.65 by polyfilling `AtomicUsize::as_ptr()`.",
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"headline": "Merge pull request #277 from briansmith/b/as-ptr",
"author_name": "Alex Kladov",
"author_login": "matklad",
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"body": "Potentially the MSRV could be reduced further as `cargo +1.63.0 check`\npasses, but `cargo +1.63.0 test` fails:\n\n```\n$ cargo +1.63.0 test\nerror: package `regex-syntax v0.8.5` cannot be built because it requires\nrustc 1.65 or newer, while the currently active rustc version is 1.63.0\n```",
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"headline": "Reduce MSRV to 1.65 by polyfilling `AtomicUsize::as_ptr()`.",
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"headline": "v1.21.0",
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"body": "feat: impl `Clone for OnceBox` and `OnceBox::with_value`",
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"headline": "Merge pull request #275 from klkvr/klkvr/once-box-helpers",
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"headline": "Merge pull request #274 from briansmith/b/get_unchecked",
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"body": "Each call to `OnceNonZeroUsize::get()` results in an atomic load as the\ncompiler will not cache and reuse the result of an atomic load.\n\nProvide an analogous `get_unchecked()` that uses a non-atomic load. The\ncompiler will be able to cache and reuse the result to avoid redundant\nloads.",
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"headline": "Add `OnceNonZeroUsize::get_unchecked`.",
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"headline": "feat: add helpers for OnceBox",
"author_name": "Arsenii Kulikov",
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"body": "Make initialization in `OnceNonZeroUsize::get_or_try_init` `#[cold]`.",
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"headline": "Merge pull request #273 from briansmith/b/cold",
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"body": "In typical use, the Some branch is going to be taken extremely\nfrequently but the None branch is only going to be taken once (or a\nvery small number of times) at startup. If `get_or_try_init` is in a\nperformance-sensitive segment of code, then it is important that\n`get_or_try_init` be inlined and th\n[…]\n a function that is marked\nbecause some post-inlining optimization passes in the compiler seem to\nnot understand `#[cold]`, and because we don't want any part of that\nbranch to be in the calling code.",
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"headline": "Make initialization in `OnceNonZeroUsize::get_or_try_init` `#[cold]`.",
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"body": "Remove \"portable-atomic?/require-cas\" from race feature",
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"headline": "Merge pull request #267 from taiki-e/portable-atomic",
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"headline": "Merge pull request #265 from taiki-e/portable-atomic",
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"headline": "Merge pull request #260 from brodycj/propagate-critical-section-to-po…",
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"headline": "v1.20.0",
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"body": "Use `portable_atomic` instead of `atomic-polyfill`",
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"headline": "Merge pull request #251 from taks/portable-atomic",
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"body": "warning: redundant pattern matching, consider using `is_err()`\n --> src/race.rs:354:20\n |\n354 | if let Err(_) = exchange {\n | -------^^^^^^----------- help: try this: `if exchange.is_err()`\n |\n = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching\n = note: `#[warn(clippy::redundant_pattern_matching)]` on by default",
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"body": "warning: this expression creates a reference which is immediately dereferenced by the compiler\n --> src/imp_std.rs:212:22\n |\n212 | wait(&queue, curr_queue);\n | ^^^^^^ help: change this to: `queue`\n |\n = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow\n = note: `#[warn(clippy::needless_borrow)]` on by default",
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"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "license",
"name": "License",
"detail": "license file detected",
"points": 2.5,
"status": "met",
"details": [],
"max_points": 2.5
},
{
"key": "maintained",
"name": "Maintained",
"detail": "0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "packaging",
"name": "Packaging",
"detail": "packaging workflow not detected",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 5
},
{
"key": "pinned_dependencies",
"name": "Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 8",
"points": 4,
"status": "partial",
"details": [],
"max_points": 5
},
{
"key": "sast",
"name": "SAST",
"detail": "SAST tool is not run on all commits -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "security_policy",
"name": "Security-Policy",
"detail": "security policy file not detected",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "signed_releases",
"name": "Signed-Releases",
"detail": "no releases found",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 7.5
},
{
"key": "token_permissions",
"name": "Token-Permissions",
"detail": "detected GitHub workflow tokens with excessive permissions",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "vulnerabilities",
"name": "Vulnerabilities",
"detail": "0 existing vulnerabilities detected",
"points": 7.5,
"status": "met",
"details": [],
"max_points": 7.5
}
]
},
{
"key": "high_risk_jurisdiction_exposure",
"band": "excellent",
"name": "High-Risk Jurisdiction Exposure",
"note": "Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.",
"notes": [
{
"code": "jurisdiction_evidence_limits",
"params": {}
}
],
"value": 100,
"inputs": {
"meaning": "self-published location evidence; not nationality or citizenship",
"red_flag": false,
"exposures": [],
"policy_countries": [
"Russia",
"Iran",
"North Korea"
],
"review_only_matches": 0,
"assessed_self_published_locations": 14
},
"components": [
{
"key": "policy_exposure_multiplier",
"name": "Policy exposure multiplier",
"detail": "no confirmed policy-scope location match",
"points": 100,
"status": "met",
"details": [
{
"code": "jurisdiction_no_match",
"params": {}
}
],
"max_points": 100
}
]
}
],
"description": "Are visible security and supply-chain practices strong, with no malicious dependency and no unresolved high-risk jurisdiction exposure?"
},
{
"key": "ai_readiness",
"band": "moderate",
"name": "AI Readiness",
"value": 50,
"weight": 0,
"metrics": [
{
"key": "ai_agent_context",
"band": "critical",
"name": "Agent context & guidance",
"note": null,
"notes": [],
"value": 25,
"inputs": {
"has_llms_txt": false,
"legible_history_share": 0.471,
"agent_instruction_files": [],
"agent_instruction_max_bytes": null
},
"components": [
{
"key": "agent_instructions",
"name": "Agent instructions",
"detail": "no CLAUDE.md / AGENTS.md / editor rules",
"points": 0,
"status": "missed",
"details": [
{
"code": "no_agent_instructions",
"params": {}
}
],
"max_points": 45
},
{
"key": "machine_readable_docs_llms_txt",
"name": "Machine-readable docs (llms.txt)",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 15
},
{
"key": "legible_commit_history",
"name": "Legible commit history",
"detail": "41 of 87 human commits state their intent (structured subject or explanatory body)",
"points": 25.1,
"status": "partial",
"details": [
{
"code": "legible_history",
"params": {
"legible": 41,
"sampled": 87
}
}
],
"max_points": 40
}
]
},
{
"key": "ai_verify_loop",
"band": "moderate",
"name": "Verify loop (build / test / typecheck)",
"note": null,
"notes": [],
"value": 54,
"inputs": {
"has_nix": false,
"has_tests": true,
"lockfiles": [],
"has_dockerfile": false,
"typed_language": true,
"bootstrap_files": [],
"has_devcontainer": false,
"has_linter_config": false,
"typecheck_configs": [],
"agent_commit_share": 0,
"toolchain_manifests": [
"Cargo.toml",
"xtask/Cargo.toml"
],
"dependency_bot_commit_share": 0
},
"components": [
{
"key": "one_command_bootstrap",
"name": "One-command bootstrap",
"detail": "Cargo.toml, xtask/Cargo.toml (toolchain convention, no task runner)",
"points": 12.6,
"status": "partial",
"details": [
{
"code": "toolchain_convention",
"params": {
"files": "Cargo.toml, xtask/Cargo.toml"
}
}
],
"max_points": 18
},
{
"key": "automated_tests",
"name": "Automated tests",
"detail": null,
"points": 22,
"status": "met",
"details": [],
"max_points": 22
},
{
"key": "lint_format_config",
"name": "Lint / format config",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 11
},
{
"key": "static_type_checking",
"name": "Static type checking",
"detail": "Rust (statically typed)",
"points": 11,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Rust"
}
}
],
"max_points": 11
},
{
"key": "reproducible_environment",
"name": "Reproducible environment",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 10
},
{
"key": "demonstrated_agent_practice",
"name": "Demonstrated agent practice",
"detail": "no agent-authored commits among the last 100",
"points": 0,
"status": "missed",
"details": [
{
"code": "no_agent_authored_commits",
"params": {
"sampled": 100
}
}
],
"max_points": 10
},
{
"key": "automated_maintenance",
"name": "Automated maintenance",
"detail": "no automated dependency updates observed",
"points": 0,
"status": "missed",
"details": [
{
"code": "no_dependency_automation",
"params": {}
}
],
"max_points": 8
},
{
"key": "openssf_scorecard_pinned_dependencies",
"name": "OpenSSF Scorecard: Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 8",
"points": 8,
"status": "partial",
"details": [],
"max_points": 10
}
]
},
{
"key": "ai_code_legibility",
"band": "excellent",
"name": "Code legibility for models",
"note": null,
"notes": [],
"value": 100,
"inputs": {
"primary_language": "Rust",
"largest_source_bytes": 47322,
"source_files_sampled": 20,
"oversized_source_files": 0
},
"components": [
{
"key": "type_checkable_code",
"name": "Type-checkable code",
"detail": "Rust (statically typed)",
"points": 45,
"status": "met",
"details": [
{
"code": "statically_typed_language",
"params": {
"language": "Rust"
}
}
],
"max_points": 45
},
{
"key": "manageable_file_sizes",
"name": "Manageable file sizes",
"detail": "0/20 source files over 60KB",
"points": 55,
"status": "met",
"details": [
{
"code": "oversized_source_files",
"params": {
"kb": 60,
"sampled": 20,
"oversized": 0
}
}
],
"max_points": 55
}
]
},
{
"key": "ai_interfaces",
"band": "at_risk",
"name": "Machine-readable interfaces",
"note": null,
"notes": [],
"value": 40,
"inputs": {
"example_dirs": [
"examples"
],
"has_mcp_signal": false,
"api_schema_files": []
},
"components": [
{
"key": "api_schema_openapi_graphql_proto",
"name": "API schema (OpenAPI/GraphQL/proto)",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 40
},
{
"key": "mcp_server",
"name": "MCP server",
"detail": null,
"points": 0,
"status": "missed",
"details": [],
"max_points": 20
},
{
"key": "runnable_examples",
"name": "Runnable examples",
"detail": "examples",
"points": 40,
"status": "met",
"details": [
{
"code": "file_list",
"params": {
"files": "examples"
}
}
],
"max_points": 40
}
]
}
],
"description": "How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score."
}
],
"metrics_version": "1.13.0"
},
"warnings": [
"Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token",
"crates package 'xtask' points at a different repository (https://github.com/arcboxlabs/xtask); excluded from ecosystem scoring",
"No resolved dependencies carried a version and a supported ecosystem"
],
"report_type": "repository",
"generated_at": "2026-07-22T23:50:34.538920Z",
"schema_version": "0.27.0",
"badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/m/matklad/once_cell.svg",
"full_name": "matklad/once_cell",
"license_state": "standard",
"license_spdx": "Apache-2.0"
}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 v1.13.0, schema v0.27.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.