Public recordGood
Software health reportschema 0.31.0 · metrics 2.10.0 · 2026-08-11 07:58 UTC
jamesmunns / postcard
A no_std + serde compatible message library for Rust
jamesmunns/postcard holds a health index of 75 out of 100, placing it in the Good band. It scores highest on Community & Adoption (72/100) and lowest on AI Readiness (48/100). It was last updated 21 days ago. A single contributor accounts for most of its recent work.
75
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.
75
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
Score profile
Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.
The weighted overall 65 is calibrated to 75 on the published index scale (record calibration 2026-08-02).
Ownership
James MunnsPersonal account
1,164 followers349 public repossince Aug 2012@oxidecomputer
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 | postcard | 1.1.3 | 6,379,754 | 40 | 382 days ago | cobsframingserdeembeddedno-std |
| crates.io | postcard2 | 0.2.1 | 13,672 | 3 | 226 days ago | serdeembeddedno-std |
| crates.io | postcard-dyn | 0.2.1 | 1,117 | 3 | 382 days ago | cobsframingserdeembeddedno-std |
| crates.io | postcard-core | 0.1.0 | 4,211 | 1 | 225 days ago | embeddedno-std |
| crates.io | postcard2-eio | 0.2.0 | 2 | 1 | 226 days ago | serdeembeddedno-std |
| crates.io | postcard-derive | 0.2.2 | 454,727 | 6 | 382 days ago | cobsframingserdeembeddedno-std |
| crates.io | postcard-dyn-ng | 0.3.0 | 5 | 1 | 417 days ago | cobsframingserdeembeddedno-std |
| crates.io | postcard-schema | 0.2.5 | 39,556 | 7 | 352 days ago | serdeembeddedno-std |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
62
Development activity
51Moderate
How it's scored
| 28.8/36 | Push recency — last push 21 days ago |
| 6.9/36 | Commit cadence — 10/52 weeks with commits |
| 12.9/18 | Commit volume — 26 commits in the last year |
| 2/10 | OpenSSF Scorecard: Maintained — 3 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 2 |
Inputs used
| commits_last_year | 26 |
| human_commit_share | 1 |
| days_since_last_push | 21 |
| active_weeks_last_year | 10 |
Release discipline
78Good
How it's scored
| 27/27 | Ships releases — 27 releases published |
| 16.2/36 | Release recency — latest release 226 days ago |
| 27/27 | Release cadence — a release every ~21.2 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 27 |
| latest_release_tag | postcard2/v0.2.0 |
| releases_from_tags | no |
| days_since_latest_release | 226 |
| mean_days_between_releases | 21.2 |
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?
72
Popularity & adoption
75Good
How it's scored
| 51.4/60 | Stars — 1,486 stars |
| 17.9/25 | Forks — 140 forks |
| 5.3/15 | Watchers — 10 watchers |
Inputs used
| forks | 140 |
| stars | 1,486 |
| watchers | 10 |
| 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 |
| readme_badges | 0 |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| readme_badge_services | — |
| has_pull_request_template | no |
Ecosystem adoption (downloads)
100Exceptional
How it's scored
| 80/80 | Monthly downloads — 6,893,044 downloads/month across crates |
| 0/20 | Registry dependents — not reported by this ecosystem |
Inputs used
| packages | postcard, postcard2, postcard-dyn, postcard-core, postcard2-eio, postcard-derive, postcard-dyn-ng, postcard-schema |
| dependents | — |
| ecosystems | crates |
| total_downloads | 55,074,772 |
| monthly_downloads | 6,893,044 |
| 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?
67
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 11.1/22.5 | Commit distribution — top contributor authored 51% of commits |
| 13.5/13.5 | Contributor breadth — 66 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 11 contributing companies or organizations |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 66 |
| top_contributor_share | 0.506 |
How it's scored
| 25.7/42 | Issue resolution — 61% of issues closed |
| 26/30 | PR acceptance — 129/149 decided PRs merged |
| 13/13 | Newcomer PR acceptance — 1/1 first-time contributors' PRs merged in 30d |
| 7.5/15 | OpenSSF Scorecard: Code-Review — Found 8/15 approved changesets -- score normalized to 5 |
Inputs used
| merged_prs | 129 |
| open_issues | 50 |
| closed_issues | 79 |
| prs_merged_7d | 0 |
| prs_decided_7d | 0 |
| prs_merged_30d | 1 |
| prs_decided_30d | 1 |
| issue_closed_ratio | 0.612 |
| closed_unmerged_prs | 20 |
| first_time_authors_30d | 1 |
| first_time_prs_merged_30d | 1 |
| first_time_prs_decided_30d | 1 |
Ownership & stewardship
71Good
How it's scored
| 10/30 | Ownership backing — personal (user) account |
| 0/20 | Verified domain — not applicable to user accounts |
| 22/25 | Owner reach — 1,164 followers of jamesmunns |
| 25/25 | Track record — 349 public repos, account ~14 yr old |
Inputs used
| followers | 1,164 |
| owner_type | User |
| is_verified | — |
| owner_login | jamesmunns |
| public_repos | 349 |
| account_age_days | 5,118 |
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.
Package maintenance
91Excellent
How it's scored
| 25/25 | Published & resolvable — 8 package(s) on crates |
| 26/35 | Publish recency — latest publish 225 days ago |
| 20/20 | Version history — 40 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | postcard, postcard2, postcard-dyn, postcard-core, postcard2-eio, postcard-derive, postcard-dyn-ng, postcard-schema |
| ecosystems | crates |
| any_deprecated | no |
| min_days_since_publish | 225 |
Engineering Quality
Are baseline engineering and documentation practices in place?
66
Engineering practices
66Good
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 |
| 18/20 | OpenSSF Scorecard: CI-Tests — 14 out of 15 merged PRs checked by a CI test -- score normalized to 9 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | no |
| has_precommit_config | no |
Documentation
65Good
How it's scored
| 30/30 | README |
| 0/25 | Documentation directory |
| 15/15 | Documentation / homepage site — https://docs.rs/postcard |
| 10/10 | Repository description |
| 0/10 | Topics |
| 10/10 | Wiki |
Inputs used
| topics | — |
| has_wiki | yes |
| homepage | — |
| docs_site | https://docs.rs/postcard |
| 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?
60
Security posture
53Moderate
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — no data |
| 2.2/2.5 | CI-Tests — 14 out of 15 merged PRs checked by a CI test -- score normalized to 9 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 3.8/7.5 | Code-Review — Found 8/15 approved changesets -- score normalized to 5 |
| 2.5/2.5 | Contributors — project has 11 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 |
| 1.5/7.5 | Maintained — 3 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 2 |
| 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 |
| 0/5 | Security-Policy — security policy file not detected |
| 0/7.5 | Signed-Releases — no data |
| 7.5/7.5 | Token-Permissions — GitHub workflow tokens follow principle of least privilege |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 15 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 3 |
| scorecard_aggregate | 5.3 |
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.
Dependency advisories
88Excellent
How it's scored
| 35/35 | Direct dependencies free of known advisories — no direct dependency carries a known advisory |
| 17.7/25 | Indirect dependencies free of known advisories — 2 affected: atomic-polyfill 1.0.3 (unknown), paste 1.0.15 (unknown) |
| 34.8/40 | No advisories left outstanding — 2 advisory-carrying package(s) unaddressed past 90 days; oldest published 1,126 days ago |
Inputs used
| source | osv |
| advisories | 2 |
| affected_packages | 2 |
| assessed_packages | 40 |
| unassessed_packages | 0 |
| affected_by_severity | unknown 2 |
| direct_affected_packages | 0 |
Matched the crates:postcard@1.1.3 runtime dependency closure — what installing the published package pulls in — 40 packages. Reachability is not analyzed.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.
48
Agent context & guidance
26At Risk
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 26.1/40 | Legible commit history — 49 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| llms_txt_url | — |
| legible_history_share | 0.49 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
How it's scored
| 12.6/18 | One-command bootstrap — Cargo.toml, source/postcard-core/Cargo.toml, source/postcard-derive-ng/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 |
| 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 | — |
| 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, source/postcard-core/Cargo.toml, source/postcard-derive-ng/Cargo.toml, source/postcard-derive/Cargo.toml, source/postcard-dyn-ng/Cargo.toml, source/postcard-dyn/Cargo.toml, source/postcard-schema-ng/Cargo.toml, source/postcard-schema/Cargo.toml, source/postcard/Cargo.toml, source/postcard2-eio/Cargo.toml, source/postcard2-heapless/Cargo.toml, source/postcard2/Cargo.toml |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Exceptional
How it's scored
| 45/45 | Type-checkable code — Rust (statically typed) |
| 55/55 | Manageable file sizes — 0/88 source files over 60KB |
Inputs used
| primary_language | Rust |
| largest_source_bytes | 29,106 |
| source_files_sampled | 88 |
| oversized_source_files | 0 |
Key facts
1,486GitHub stars
66contributors
26commits, last 12 months
21days since last push
27releases
1bus factor
50open 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 ★ / 140 ⇿
0Stars
140Forks
27Releases
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 0Patch 10
Each point covers 7 days.
OpenSSF Scorecard 5.3 / 10
5.3aggregate
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 |
| n/a | Branch-Protection | internal 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 |
| 9 | CI-Tests | 14 out of 15 merged PRs checked by a CI test -- score normalized to 9 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 5 | Code-Review | Found 8/15 approved changesets -- score normalized to 5 |
| 10 | Contributors | project has 11 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 |
| 2 | Maintained | 3 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 2 |
| 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 |
| 0 | Security-Policy | security policy file not detected |
| n/a | Signed-Releases | no releases found |
| 10 | Token-Permissions | GitHub workflow tokens follow principle of least privilege |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 62
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| crates.io | syn | 2.0 | source/postcard-derive-ng/Cargo.toml |
| crates.io | quote | 1.0 | source/postcard-derive-ng/Cargo.toml |
| crates.io | proc-macro2 | 1.0 | source/postcard-derive-ng/Cargo.toml |
| crates.io | syn | 2.0 | source/postcard-derive/Cargo.toml |
| crates.io | quote | 1.0 | source/postcard-derive/Cargo.toml |
| crates.io | proc-macro2 | 1.0 | source/postcard-derive/Cargo.toml |
| crates.io | serde | 1.0.202 | source/postcard-dyn-ng/Cargo.toml |
| crates.io | serde_json | 1.0.117 | source/postcard-dyn-ng/Cargo.toml |
| crates.io | postcard | 1.0.10 | source/postcard-dyn-ng/Cargo.toml |
| crates.io | postcard-schema-ng | 0.3 | source/postcard-dyn-ng/Cargo.toml |
| crates.io | serde | 1.0.202 | source/postcard-dyn/Cargo.toml |
| crates.io | serde_json | 1.0.117 | source/postcard-dyn/Cargo.toml |
| crates.io | postcard | 1.0.10 | source/postcard-dyn/Cargo.toml |
| crates.io | postcard-schema | 0.2 | source/postcard-dyn/Cargo.toml |
| crates.io | serde | 1.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | uuid_v1_0 | 1.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | chrono_v0_4 | 0.4 | source/postcard-schema-ng/Cargo.toml |
| crates.io | heapless_v0_7 | 0.7 | source/postcard-schema-ng/Cargo.toml |
| crates.io | heapless_v0_8 | 0.8 | source/postcard-schema-ng/Cargo.toml |
| crates.io | heapless_v0_9 | 0.9 | source/postcard-schema-ng/Cargo.toml |
| crates.io | nalgebra_v0_33 | 0.33.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | fixed_v1_0 | 1.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | postcard-derive-ng | 0.3.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | defmt_v0_3 | 0.3.5 | source/postcard-schema-ng/Cargo.toml |
| crates.io | serde-big-array_v0_5 | 0.5.1 | source/postcard-schema-ng/Cargo.toml |
| crates.io | enum-map_v3_0 | 3.0.0 | source/postcard-schema-ng/Cargo.toml |
| crates.io | serde | 1.0 | source/postcard-schema/Cargo.toml |
| crates.io | uuid_v1_0 | 1.0 | source/postcard-schema/Cargo.toml |
| crates.io | chrono_v0_4 | 0.4 | source/postcard-schema/Cargo.toml |
| crates.io | heapless_v0_7 | 0.7 | source/postcard-schema/Cargo.toml |
| crates.io | heapless_v0_8 | 0.8 | source/postcard-schema/Cargo.toml |
| crates.io | heapless_v0_9 | 0.9 | source/postcard-schema/Cargo.toml |
| crates.io | nalgebra_v0_33 | 0.33.0 | source/postcard-schema/Cargo.toml |
| crates.io | nalgebra_v0_34 | 0.34.1 | source/postcard-schema/Cargo.toml |
| crates.io | fixed_v1_0 | 1.0 | source/postcard-schema/Cargo.toml |
| crates.io | postcard-derive | 0.2.0 | source/postcard-schema/Cargo.toml |
| crates.io | defmt_v0_3 | 0.3.5 | source/postcard-schema/Cargo.toml |
| crates.io | serde-big-array_v0_5 | 0.5.1 | source/postcard-schema/Cargo.toml |
| crates.io | heapless | 0.7.0 | source/postcard/Cargo.toml |
| crates.io | heapless-v0_8 | 0.8.0 | source/postcard/Cargo.toml |
| crates.io | heapless-v0_9 | 0.9.1 | source/postcard/Cargo.toml |
| crates.io | serde | 1.0.100 | source/postcard/Cargo.toml |
| crates.io | cobs | 0.3.0 | source/postcard/Cargo.toml |
| crates.io | defmt | 1 | source/postcard/Cargo.toml |
| crates.io | embedded-io-04 | 0.4 | source/postcard/Cargo.toml |
| crates.io | embedded-io-06 | 0.6 | source/postcard/Cargo.toml |
| crates.io | postcard-derive | 0.2.0 | source/postcard/Cargo.toml |
| crates.io | crc | 3.0.1 | source/postcard/Cargo.toml |
| crates.io | nalgebra_v0_33 | 0.33.0 | source/postcard/Cargo.toml |
| crates.io | enum-map-v3_0 | 3.0.0 | source/postcard/Cargo.toml |
| crates.io | postcard2 | 0.2.0 | source/postcard2-eio/Cargo.toml |
| crates.io | serde_core | 1.0.228 | source/postcard2-eio/Cargo.toml |
| crates.io | embedded_io_v0_7 | 0.7.1 | source/postcard2-eio/Cargo.toml |
| crates.io | postcard2 | 0.2.0 | source/postcard2-heapless/Cargo.toml |
| crates.io | serde_core | 1.0.228 | source/postcard2-heapless/Cargo.toml |
| crates.io | heapless_v0_9 | 0.9.1 | source/postcard2-heapless/Cargo.toml |
| crates.io | postcard-core | 0.1.0 | source/postcard2/Cargo.toml |
| crates.io | serde_core | 1.0.228 | source/postcard2/Cargo.toml |
| crates.io | defmt | 1 | source/postcard2/Cargo.toml |
| crates.io | postcard-derive-ng | 0.3.0 | source/postcard2/Cargo.toml |
| crates.io | serde_derive | 1.0.228 | source/postcard2/Cargo.toml |
| crates.io | serde | 1.0.228 | source/postcard2/Cargo.toml |
All dependencies 26
Full resolved dependency set from the GitHub dependency graph: 18 direct and 8 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| crates.io | cobs | — | direct |
| crates.io | crc | — | direct |
| crates.io | defmt | — | direct |
| crates.io | heapless | — | direct |
| crates.io | postcard | — | direct |
| crates.io | postcard-core | — | direct |
| crates.io | postcard-derive | — | direct |
| crates.io | postcard-derive-ng | — | direct |
| crates.io | postcard-schema | — | direct |
| crates.io | postcard-schema-ng | — | direct |
| crates.io | postcard2 | — | direct |
| crates.io | proc-macro2 | — | direct |
| crates.io | quote | — | direct |
| crates.io | serde | — | direct |
| crates.io | serde_core | — | direct |
| crates.io | serde_derive | — | direct |
| crates.io | serde_json | — | direct |
| crates.io | syn | — | direct |
| crates.io | chrono | — | indirect |
| crates.io | criterion | — | indirect |
| crates.io | embedded-io | — | indirect |
| crates.io | enum-map | — | indirect |
| crates.io | fixed | — | indirect |
| crates.io | nalgebra | — | indirect |
| crates.io | serde-big-array | — | indirect |
| crates.io | uuid | — | indirect |
Dependency advisories 2
Installing crates:postcard@1.1.3 pulls in 40 packages, direct and transitive: 2 carry known advisories, of which 0 are direct dependencies.
| Package | Version | Relation | Severity | Advisories | Fixed in |
|---|---|---|---|---|---|
| atomic-polyfill | 1.0.3 | indirect | unknown | 1 | — |
| paste | 1.0.15 | indirect | unknown | 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
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.
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 v0.31.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — crates.io.