Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-10-20 16:14 UTC

stalwartlabs / calcard

iCalendar/JSCalendar and vCard/JSContact parsing, building and conversion library for Rust

RustCustom license★ 75 stars⑂ 6 forkssince Jan 2025View on GitHub ↗
KindLibraryhow this is determined
#exporter#generator#ical#icalendar#vcard#parser#jscalendar#jscontact

stalwartlabs/calcard holds a health index of 53 out of 100, placing it in the Moderate band. It scores highest on Engineering Quality (62/100) and lowest on Vitality (38/100). It was last updated 14 days ago. A single contributor accounts for most of its recent work.

53
overall / 100
Moderate

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.

53
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 52 is calibrated to 53 on the published index scale (record calibration 2026-08-02).

Ownership

Stalwart LabsOrganization · verified domain
968 followers30 public repossince Dec 2020

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.iocalcard0.3.1410,3972035 days agoparsericalendarvcardjscontactjscalendardate-and-timeemailparser-implementations

Metrics by category

Vitality

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

38Weak · 21% of overall

Development activity

62Moderate
How it's scored
28.8/36Push recency — last push 14 days ago
9.7/36Commit cadence — 14/52 weeks with commits
13.5/18Commit volume — 31 commits in the last year
10/10OpenSSF Scorecard: Maintained — 19 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year31
human_commit_share1
days_since_last_push14
active_weeks_last_year14

Release discipline

1Critical
How it's scored
0/27Ships releases — no releases published
0/36Release recency — no releases
0/27Release cadence — no releases
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count0
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?

52Moderate · 17% of overall

Popularity & adoption

36Weak
How it's scored
30.3/60Stars — 75 stars
5.8/25Forks — 6 forks
0/15Watchers — 1 watchers
Inputs used
forks6
stars75
watchers1
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

59Moderate
How it's scored
22.5/22.5README
16.9/22.5License — license file present, not a recognized license
0/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseno
readme_badges4
has_contributingno
has_issue_templateno
has_code_of_conductyes
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateno

Ecosystem adoption (downloads)

67Good
How it's scored
53.6/80Monthly downloads — 10,397 downloads/month across crates
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagescalcard
dependents—
ecosystemscrates
total_downloads70,759
monthly_downloads10,397
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?

59Moderate · 23% of overall

Maintainer resilience (bus factor)

16Critical
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
0/22.5Commit distribution — top contributor authored 100% of commits
1.4/13.5Contributor breadth — 1 contributors
6/10OpenSSF Scorecard: Contributors — project has 2 contributing companies or organizations -- score normalized to 6
Inputs used
bus_factor1
contributors_sampled1
top_contributor_share1

Issue & PR responsiveness

43Weak
How it's scored
37.2/42Issue resolution — 88% of issues closed
0/30PR acceptance — 0/1 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
0/15OpenSSF Scorecard: Code-Review — Found 0/30 approved changesets -- score normalized to 0
Inputs used
merged_prs0
open_issues3
closed_issues23
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.885
closed_unmerged_prs1
first_time_authors_30d0
first_time_prs_merged_30d0
first_time_prs_decided_30d0
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.

Ownership & stewardship

94Exceptional
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
21.5/25Owner reach — 968 followers of stalwartlabs
22.5/25Track record — 30 public repos, account ~5 yr old
Inputs used
followers968
owner_typeOrganization
is_verifiedyes
owner_loginstalwartlabs
public_repos30
account_age_days2,124

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on crates
35/35Publish recency — latest publish 35 days ago
20/20Version history — 20 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagescalcard
ecosystemscrates
any_deprecatedno
min_days_since_publish35

Engineering Quality

Are baseline engineering and documentation practices in place?

62Moderate · 19% of overall

Engineering practices

60Moderate
How it's scored
24/24CI workflows — 2 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
0/20OpenSSF Scorecard: CI-Tests — no data
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: CI-Tests. Remaining weights renormalized.

Documentation

65Good
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://docs.rs/calcard
10/10Repository description
10/10Topics — 8 topics
0/10Wiki
Inputs used
topicsexporter, generator, ical, icalendar, vcard, parser, jscalendar, jscontact
has_wikino
homepage—
docs_sitehttps://docs.rs/calcard
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

52Moderate · 16% of overall

Security posture

52Moderate
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — branch protection not enabled on development/release branches
0/2.5CI-Tests — no data
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
0/7.5Code-Review — Found 0/30 approved changesets -- score normalized to 0
1.5/2.5Contributors — project has 2 contributing companies or organizations -- score normalized to 6
10/10Dangerous-Workflow — no dangerous workflow patterns detected
0/7.5Dependency-Update-Tool — no update tool detected
5/5Fuzzing — project is fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 19 commit(s) and 4 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
0/5SAST — no SAST tool detected
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate5.2
Excluded from scoring (no data or not applicable): CI-Tests, Packaging, Signed-Releases. Remaining weights renormalized.

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.

49Weak · 4% of overall

Agent context & guidance

4Critical
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
3.7/40Legible commit history — 7 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.07
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

46Weak
How it's scored
12.6/18One-command bootstrap — Cargo.toml, fuzz/Cargo.toml, web/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checking — Rust (statically typed)
0/10Reproducible environment
0/10Demonstrated agent practice — no agent-authored commits among the last 100
0/8Automated maintenance — no automated dependency updates observed
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share0
toolchain_manifestsCargo.toml, fuzz/Cargo.toml, web/Cargo.toml
dependency_bot_commit_share0

Code legibility for models

94Exceptional
How it's scored
45/45Type-checkable code — Rust (statically typed)
48.8/55Manageable file sizes — 12/107 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes246,494
source_files_sampled107
oversized_source_files12

Machine-readable interfaces

100Exceptional
How it's scored
0/40API schema (OpenAPI/GraphQL/proto) — not applicable to this kind of software
0/20MCP server — not applicable to this kind of software
40/40Runnable examples — samples
Inputs used
example_dirssamples
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

75GitHub stars
1contributors
31commits, last 12 months
14days since last push
0releases
1bus factor
3open issues
crates.iopackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch crates package 'calcard-web' from its registry
  • No resolved dependencies carried a version and a supported ecosystem

More detail

Star and fork history 0 ★ / 6 ⇿
0Stars
6Forks

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.

123456612025-052026-012026-08

Each point covers 2 days.

OpenSSF Scorecard 5.2 / 10
5.2aggregate

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 · 2026-10-20 16:14 UTC

10Binary-Artifactsno binaries found in the repo
0Branch-Protectionbranch protection not enabled on development/release branches
n/aCI-Testsno pull request found
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/30 approved changesets -- score normalized to 0
6Contributorsproject has 2 contributing companies or organizations -- score normalized to 6
10Dangerous-Workflowno dangerous workflow patterns detected
0Dependency-Update-Toolno update tool detected
10Fuzzingproject is fuzzed
10Licenselicense file detected
10Maintained19 commit(s) and 4 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
0SASTno SAST tool detected
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 20
RegistryPackageVersion constraintManifest
crates.iojmap-tools0.1.9Cargo.toml
crates.ioahash0.8.11Cargo.toml
crates.iojiff0.2.37Cargo.toml
crates.iohashify0.3Cargo.toml
crates.iomemchr2.7Cargo.toml
crates.ioencodify1.0Cargo.toml
crates.iomail-parser1.0Cargo.toml
crates.iosimdutf80.1.5Cargo.toml
crates.iosmallvec1.16Cargo.toml
crates.iouuid1.26Cargo.toml
crates.iosha10.11Cargo.toml
crates.iorkyv0.8Cargo.toml
crates.ioserde1.0Cargo.toml
crates.ioserde_json1.0Cargo.toml
crates.iocalcard—web/Cargo.toml
crates.iowasm-bindgen0.2web/Cargo.toml
crates.ioserde1web/Cargo.toml
crates.ioserde-wasm-bindgen0.6web/Cargo.toml
crates.ioconsole_error_panic_hook0.1web/Cargo.toml
crates.iogetrandom0.3web/Cargo.toml
All dependencies 21

Full resolved dependency set from the GitHub dependency graph: 18 direct and 3 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioahash—direct
crates.ioconsole_error_panic_hook—direct
crates.ioencodify—direct
crates.iogetrandom—direct
crates.iohashify—direct
crates.iojiff—direct
crates.iojmap-tools—direct
crates.iomail-parser—direct
crates.iomemchr—direct
crates.iorkyv—direct
crates.ioserde—direct
crates.ioserde-wasm-bindgen—direct
crates.ioserde_json—direct
crates.iosha1—direct
crates.iosimdutf8—direct
crates.iosmallvec—direct
crates.iouuid—direct
crates.iowasm-bindgen—direct
crates.ioarbitrary—indirect
crates.ioinsta—indirect
crates.iolibfuzzer-sys—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

Feedback

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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 statistics — crates.io.