Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-15 08:08 UTC

sabre-io / dav

sabre/dav is a CalDAV, CardDAV and WebDAV framework for PHP

PHPBSD-3-Clause★ 1,721 stars⑂ 372 forkssince Oct 2011View on GitHub ↗
KindLibraryCommand-line toolhow this is determined

sabre-io/dav holds a health index of 84 out of 100, placing it in the Excellent band. It scores highest on Community & Adoption (80/100) and lowest on AI Readiness (53/100). It was last updated 43 days ago. A single contributor accounts for most of its recent work.

84
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.

84
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 71 is calibrated to 84 on the published index scale (record calibration 2026-08-02).

Ownership

sabre.ioOrganization
153 followers20 public repossince May 2017

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
Packagistsabre/dav4.7.1406,37612569 days agoframeworkwebdavcaldavcarddavicalendar

Metrics by category

Vitality

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

69Good · 21% of overall

Development activity

59Moderate
How it's scored
18/36Push recency — last push 43 days ago
13.8/36Commit cadence — 20/52 weeks with commits
16.9/18Commit volume — 75 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year75
human_commit_share0.91
days_since_last_push43
active_weeks_last_year20

Release discipline

84Excellent
How it's scored
27/27Ships releases — 100 releases published
36/36Release recency — latest release 69 days ago
12.6/27Release cadence — a release every ~185.7 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count100
latest_release_tag4.7.1
releases_from_tagsno
days_since_latest_release69
mean_days_between_releases185.7
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?

80Excellent · 17% of overall

Popularity & adoption

84Excellent
How it's scored
52.5/60Stars — 1,721 stars
21.4/25Forks — 372 forks
10.1/15Watchers — 67 watchers
Inputs used
forks372
stars1,721
watchers67
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

70Good
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (BSD-3-Clause)
18/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges1
has_contributingyes
has_issue_templateno
has_code_of_conductno
readme_badge_servicesgithub.com
has_pull_request_templateno

Ecosystem adoption (downloads)

88Excellent
How it's scored
74.8/80Monthly downloads — 406,376 downloads/month across packagist
12.7/20Registry dependents — 79 packages depend on it
Inputs used
packagessabre/dav
dependents79
ecosystemspackagist
total_downloads16,694,661
monthly_downloads406,376
unverified_packages_excluded—

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

68Good · 23% of overall

Maintainer resilience (bus factor)

36Weak
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
3.4/22.5Commit distribution — top contributor authored 85% of commits
13.5/13.5Contributor breadth — 99 contributors
10/10OpenSSF Scorecard: Contributors — project has 68 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled99
top_contributor_share0.849

Issue & PR responsiveness

80Excellent
How it's scored
35/42Issue resolution — 83% of issues closed
22.7/30PR acceptance — 495/655 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
12/15OpenSSF Scorecard: Code-Review — Found 6/7 approved changesets -- score normalized to 8
Inputs used
merged_prs495
open_issues161
closed_issues808
prs_merged_7d0
prs_decided_7d0
prs_merged_30d0
prs_decided_30d0
issue_closed_ratio0.834
closed_unmerged_prs160
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

67Good
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
15.7/25Owner reach — 153 followers of sabre-io
21.6/25Track record — 20 public repos, account ~9 yr old
Inputs used
followers153
owner_typeOrganization
is_verifiedno
owner_loginsabre-io
public_repos20
account_age_days3,417

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on packagist
35/35Publish recency — latest publish 69 days ago
20/20Version history — 125 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagessabre/dav
ecosystemspackagist
any_deprecatedno
min_days_since_publish69

Engineering Quality

Are baseline engineering and documentation practices in place?

72Good · 19% of overall

Engineering practices

84Excellent
How it's scored
24/24CI workflows — 1 workflow(s)
24/24Tests present
16/16Linter config — .php-cs-fixer.dist.php, phpstan.neon
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 8 out of 8 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

55Moderate
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — http://sabre.io
10/10Repository description
0/10Topics
0/10Wiki
Inputs used
topics—
has_wikino
homepagehttp://sabre.io
docs_sitehttp://sabre.io
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

70Good · 16% of overall

Security posture

70Good
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 8 out of 8 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
6/7.5Code-Review — Found 6/7 approved changesets -- score normalized to 8
2.5/2.5Contributors — project has 68 contributing companies or organizations
0/10Dangerous-Workflow — no data
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
0/5Pinned-Dependencies — no data
0/5SAST — SAST tool is not run on all commits -- score normalized to 0
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — no data
0/7.5Token-Permissions — no data
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated12
scorecard_versionv5.5.0
checks_inconclusive6
scorecard_aggregate7
Excluded from scoring (no data or not applicable): Branch-Protection, Dangerous-Workflow, Packaging, Pinned-Dependencies, Signed-Releases, Token-Permissions. 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.

53Moderate · 4% of overall

Agent context & guidance

39Weak
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
38.7/40Legible commit history — 66 of 91 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.725
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

46Weak
How it's scored
0/18One-command bootstrap
22/22Automated tests
11/11Lint / format config — .php-cs-fixer.dist.php, phpstan.neon
0/11Static type checking
0/10Reproducible environment
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 9 of the last 100 commits are automated dependency updates
0/10OpenSSF Scorecard: Pinned-Dependencies — no data
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileno
typed_languageno
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share0
toolchain_manifests—
dependency_bot_commit_share0.09
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Pinned-Dependencies. Remaining weights renormalized.

Code legibility for models

55Moderate
How it's scored
0/45Type-checkable code — PHP without a type-check config
55/55Manageable file sizes — 0/486 source files over 60KB
Inputs used
primary_languagePHP
largest_source_bytes57,729
source_files_sampled486
oversized_source_files0

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 — examples
Inputs used
example_dirsexamples
has_mcp_signalno
api_schema_files—
interfaces_expected_of—
Excluded from scoring (no data or not applicable): API schema (OpenAPI/GraphQL/proto), MCP server. Remaining weights renormalized.

Key facts

1,721GitHub stars
99contributors
75commits, last 12 months
43days since last push
100releases
1bus factor
161open issues
Packagistpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • No resolved dependencies carried a version and a supported ecosystem

More detail

Star and fork history 0 ★ / 372 ⇿
0Stars
372Forks
100Releases

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.

012525037536342011-112019-042026-09
Major 3Minor 10Patch 64

Each point covers 14 days.

OpenSSF Scorecard 7.0 / 10
7.0aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-09-15 08:07 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-Tests8 out of 8 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
8Code-ReviewFound 6/7 approved changesets -- score normalized to 8
10Contributorsproject has 68 contributing companies or organizations
n/aDangerous-Workflowno workflows found
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
n/aPinned-Dependenciesno dependencies found
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
n/aToken-PermissionsNo tokens found
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 4
RegistryPackageVersion constraintManifest
Packagistpsr/log^1.0 || ^2.0 || ^3.0composer.json
Packagistsabre/event^6.0composer.json
Packagistsabre/http^7.0composer.json
Packagistsabre/vobject^4.5composer.json
All dependencies 21

Full resolved dependency set from the GitHub dependency graph: 4 direct and 17 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
Packagistpsr/log—direct
Packagistsabre/event—direct
Packagistsabre/http—direct
Packagistsabre/vobject—direct
Packagistext-ctype—indirect
Packagistext-date—indirect
Packagistext-dom—indirect
Packagistext-iconv—indirect
Packagistext-json—indirect
Packagistext-mbstring—indirect
Packagistext-pcre—indirect
Packagistext-simplexml—indirect
Packagistext-spl—indirect
Packagistext-sqlite3—indirect
Packagistfriendsofphp/php-cs-fixer—indirect
Packagistlib-libxml—indirect
Packagistmonolog/monolog—indirect
Packagistphp—indirect
Packagistphpstan/phpstan—indirect
Packagistphpstan/phpstan-phpunit—indirect
Packagistphpunit/phpunit—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

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.

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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 — Packagist.