Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-13 16:50 UTC

LabOverWire / mqtt-lib

MQTT v5.0 full in Rust

RustApache-2.0★ 59 stars⑂ 6 forkssince Nov 2025View on GitHub ↗
KindLibraryCommand-line toolhow this is determined

LabOverWire/mqtt-lib holds a health index of 77 out of 100, placing it in the Good band. It scores highest on Vitality (91/100) and lowest on Sustainability & Governance (53/100). It was last updated 2 days ago. A single contributor accounts for most of its recent work.

77
overall / 100
Good

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.

77
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 66 is calibrated to 77 on the published index scale (record calibration 2026-08-02).

Ownership

LabOverWireOrganization
3 followers5 public repossince Nov 2025

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
crates.iomqtt50.40.04,485723 days agoasyncbrokerclientiotmqttasynchronousnetwork-programming
crates.iomqtt5-wasm1.4.6108383 days agoiotmqttpubsubwasmwebassemblynetwork-programming
crates.iomqttv5-cli0.28.797503 days agobrokercliclientiotmqttcommand-line-utilitiesnetwork-programming
crates.iomqtt5-protocol0.15.14,439303 days agocodeciotmqttpacketprotocolencodingnetwork-programmingparsing

Metrics by category

Vitality

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

91Excellent · 21% of overall

Development activity

91Excellent
How it's scored
36/36Push recency — last push 2 days ago
27/36Commit cadence — 39/52 weeks with commits
18/18Commit volume — 163 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year163
human_commit_share1
days_since_last_push2
active_weeks_last_year39

Release discipline

90Excellent
How it's scored
27/27Ships releases — 65 releases published
36/36Release recency — latest release 3 days ago
27/27Release cadence — a release every ~5.2 days
0/10OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases.
Inputs used
releases_count65
latest_release_tagv0.40.0
releases_from_tagsno
days_since_latest_release3
mean_days_between_releases5.2

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

62Moderate · 17% of overall

Popularity & adoption

34At Risk
How it's scored
28.6/60Stars — 59 stars
5.8/25Forks — 6 forks
0/15Watchers — 1 watchers
Inputs used
forks6
stars59
watchers1
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

92Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
6.3/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges3
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_servicesgithub.com, shields.io
has_pull_request_templateyes

Ecosystem adoption (downloads)

66Good
How it's scored
52.8/80Monthly downloads — 9,129 downloads/month across crates
0/20Registry dependents — not reported by this ecosystem
Inputs used
packagesmqtt5, mqtt5-wasm, mqttv5-cli, mqtt5-protocol
dependents—
ecosystemscrates
total_downloads41,518
monthly_downloads9,129
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?

53Moderate · 23% of overall

Maintainer resilience (bus factor)

14Critical
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
0.4/22.5Commit distribution — top contributor authored 98% of commits
4.1/13.5Contributor breadth — 3 contributors
0/10OpenSSF Scorecard: Contributors — project has 0 contributing companies or organizations -- score normalized to 0
Inputs used
bus_factor1
contributors_sampled3
top_contributor_share0.982

Issue & PR responsiveness

72Good
How it's scored
34.1/42Issue resolution — 81% of issues closed
28.7/30PR acceptance — 108/113 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_prs108
open_issues7
closed_issues30
prs_merged_7d9
prs_decided_7d9
prs_merged_30d13
prs_decided_30d14
issue_closed_ratio0.811
closed_unmerged_prs5
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

42Weak
How it's scored
30/30Ownership backing — organization-owned
0/20Verified domain
4.3/25Owner reach — 3 followers of LabOverWire
7.3/25Track record — 5 public repos, account ~0 yr old
Inputs used
followers3
owner_typeOrganization
is_verifiedno
owner_loginLabOverWire
public_repos5
account_age_days299

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 4 package(s) on crates
35/35Publish recency — latest publish 3 days ago
20/20Version history — 72 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesmqtt5, mqtt5-wasm, mqttv5-cli, mqtt5-protocol
ecosystemscrates
any_deprecatedno
min_days_since_publish3

Engineering Quality

Are baseline engineering and documentation practices in place?

67Good · 19% of overall

Engineering practices

68Good
How it's scored
24/24CI workflows — 5 workflow(s)
24/24Tests present
0/16Linter config
0/9.6Pre-commit hooks
0/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 21 out of 21 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno

Documentation

65Good
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://docs.rs/mqtt5
10/10Repository description
0/10Topics
10/10Wiki
Inputs used
topics—
has_wikiyes
homepage—
docs_sitehttps://docs.rs/mqtt5
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

56Moderate · 16% of overall

Security posture

56Moderate
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
3.8/7.5Branch-Protection — branch protection is not maximal on development and all release branches
2.5/2.5CI-Tests — 21 out of 21 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
0/7.5Code-Review — Found 0/30 approved changesets -- score normalized to 0
0/2.5Contributors — project has 0 contributing companies or organizations -- score normalized to 0
10/10Dangerous-Workflow — no dangerous workflow patterns detected
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 0 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
0/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
5/5SAST — SAST tool is run on all commits
0/5Security-Policy — security policy file not detected
0/7.5Signed-Releases — Project has not signed or included provenance with any releases.
0/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated18
scorecard_versionv5.5.0
checks_inconclusive0
scorecard_aggregate5.6

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.

66Good · 4% of overall

Agent context & guidance

34At Risk
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
33.6/40Legible commit history — 63 of 100 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share0.63
agent_instruction_files—
agent_instruction_max_bytes—

Verify loop (build / test / typecheck)

65Good
How it's scored
12.6/18One-command bootstrap — Cargo.toml, crates/mqtt5-conformance-cli/Cargo.toml, crates/mqtt5-conformance-macros/Cargo.toml (toolchain convention, no task runner)
22/22Automated tests
0/11Lint / format config
11/11Static type checking — Rust (statically typed)
10/10Reproducible environment — Dockerfile
4/10Demonstrated agent practice — 2 of the last 100 commits agent-authored or agent-credited
5/8Automated maintenance — dependency automation configured, none observed in the sampled commits
0/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0
Inputs used
has_nixno
has_testsyes
lockfiles—
has_dockerfileyes
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configs—
agent_commit_share0.02
toolchain_manifestsCargo.toml, crates/mqtt5-conformance-cli/Cargo.toml, crates/mqtt5-conformance-macros/Cargo.toml, crates/mqtt5-conformance/Cargo.toml, crates/mqtt5-protocol/Cargo.toml, crates/mqtt5-wasm/Cargo.toml, crates/mqtt5/Cargo.toml, crates/mqttv5-cli/Cargo.toml
dependency_bot_commit_share0

Code legibility for models

99Exceptional
How it's scored
45/45Type-checkable code — Rust (statically typed)
54.3/55Manageable file sizes — 5/388 source files over 60KB
Inputs used
primary_languageRust
largest_source_bytes85,342
source_files_sampled388
oversized_source_files5

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

59GitHub stars
3contributors
163commits, last 12 months
2days since last push
65releases
1bus factor
7open 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 'mqtt5-conformance' from its registry
  • Could not fetch crates package 'mqtt5-conformance-cli' from its registry
  • Could not fetch crates package 'mqtt5-conformance-macros' from its registry
  • No resolved dependencies carried a version and a supported ecosystem

More detail

Star and fork history 0 ★ / 6 ⇿
0Stars
6Forks
24Releases

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.

123456612026-032026-062026-08
Major 0Minor 11Patch 13
OpenSSF Scorecard 5.6 / 10
5.6aggregate

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 · 2026-09-13 16:50 UTC

10Binary-Artifactsno binaries found in the repo
5Branch-Protectionbranch protection is not maximal on development and all release branches
10CI-Tests21 out of 21 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
0Code-ReviewFound 0/30 approved changesets -- score normalized to 0
0Contributorsproject has 0 contributing companies or organizations -- score normalized to 0
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
0Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 0
10SASTSAST tool is run on all commits
0Security-Policysecurity policy file not detected
0Signed-ReleasesProject has not signed or included provenance with any releases.
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 87
RegistryPackageVersion constraintManifest
crates.iofutures-util0.3.32crates/mqtt5-conformance-cli/Cargo.toml
crates.iolibtest-mimic0.8.2crates/mqtt5-conformance-cli/Cargo.toml
crates.iomqtt5-conformance0.1.0crates/mqtt5-conformance-cli/Cargo.toml
crates.ioserde_json1.0.149crates/mqtt5-conformance-cli/Cargo.toml
crates.iotokio1.51.1crates/mqtt5-conformance-cli/Cargo.toml
crates.ioproc-macro21.0.106crates/mqtt5-conformance-macros/Cargo.toml
crates.ioquote1.0.46crates/mqtt5-conformance-macros/Cargo.toml
crates.iosyn2.0.118crates/mqtt5-conformance-macros/Cargo.toml
crates.iomqtt5—crates/mqtt5-conformance/Cargo.toml
crates.iomqtt5-protocol—crates/mqtt5-conformance/Cargo.toml
crates.iotokio1.47crates/mqtt5-conformance/Cargo.toml
crates.iotracing0.1crates/mqtt5-conformance/Cargo.toml
crates.iotracing-subscriber0.3crates/mqtt5-conformance/Cargo.toml
crates.ioserde1.0crates/mqtt5-conformance/Cargo.toml
crates.ioserde_json1.0crates/mqtt5-conformance/Cargo.toml
crates.iotoml1crates/mqtt5-conformance/Cargo.toml
crates.iobytes1.12.0crates/mqtt5-conformance/Cargo.toml
crates.ioulid1.2.1crates/mqtt5-conformance/Cargo.toml
crates.iolinkme0.3.35crates/mqtt5-conformance/Cargo.toml
crates.iomqtt5-conformance-macros0.1.0crates/mqtt5-conformance/Cargo.toml
crates.iotokio-tungstenite0.29crates/mqtt5-conformance/Cargo.toml
crates.iofutures-util0.3crates/mqtt5-conformance/Cargo.toml
crates.iohttp1.4.0crates/mqtt5-conformance/Cargo.toml
crates.iobebytes3.0.2crates/mqtt5-protocol/Cargo.toml
crates.iobytes1.12crates/mqtt5-protocol/Cargo.toml
crates.iothiserror2.0crates/mqtt5-protocol/Cargo.toml
crates.ioserde1.0crates/mqtt5-protocol/Cargo.toml
crates.iotracing0.1.41crates/mqtt5-protocol/Cargo.toml
crates.iohashbrown0.17crates/mqtt5-protocol/Cargo.toml
crates.ioportable-atomic1.12crates/mqtt5-protocol/Cargo.toml
crates.ioportable-atomic-util0.2.4crates/mqtt5-protocol/Cargo.toml
crates.iomqtt5-protocol0.15.1crates/mqtt5-wasm/Cargo.toml
crates.iomqtt50.40crates/mqtt5-wasm/Cargo.toml
crates.iowasm-bindgen0.2.126crates/mqtt5-wasm/Cargo.toml
crates.iowasm-bindgen-futures0.4.76crates/mqtt5-wasm/Cargo.toml
crates.iojs-sys0.3.103crates/mqtt5-wasm/Cargo.toml
crates.ioconsole_error_panic_hook0.1crates/mqtt5-wasm/Cargo.toml
crates.iogetrandom0.4.3crates/mqtt5-wasm/Cargo.toml
crates.iobytes1.12.0crates/mqtt5-wasm/Cargo.toml
crates.iofutures0.3crates/mqtt5-wasm/Cargo.toml
crates.iofutures-util0.3crates/mqtt5-wasm/Cargo.toml
crates.iotracing0.1.41crates/mqtt5-wasm/Cargo.toml
crates.iogloo-timers0.4crates/mqtt5-wasm/Cargo.toml
crates.ioflume0.12.0crates/mqtt5-wasm/Cargo.toml
crates.iominiz_oxide0.9crates/mqtt5-wasm/Cargo.toml
crates.iosha20.11crates/mqtt5-wasm/Cargo.toml
crates.ioweb-sys0.3.103crates/mqtt5-wasm/Cargo.toml
crates.iobase640.22crates/mqtt5/Cargo.toml
crates.iobytes1.12.0crates/mqtt5/Cargo.toml
crates.iofutures0.3crates/mqtt5/Cargo.toml
crates.iofutures-util0.3crates/mqtt5/Cargo.toml
crates.iohex0.4crates/mqtt5/Cargo.toml
crates.iorand0.10.2crates/mqtt5/Cargo.toml
crates.ioserde1.0crates/mqtt5/Cargo.toml
crates.ioserde_json1.0crates/mqtt5/Cargo.toml
crates.iosha20.11crates/mqtt5/Cargo.toml
crates.iothiserror2.0crates/mqtt5/Cargo.toml
crates.iotoml1crates/mqtt5/Cargo.toml
crates.iotracing0.1crates/mqtt5/Cargo.toml
crates.iourl2.5crates/mqtt5/Cargo.toml
crates.iotracing-subscriber0.3crates/mqtt5/Cargo.toml
crates.ioturmoil0.7crates/mqtt5/Cargo.toml
crates.ioopentelemetry_sdk0.32crates/mqtt5/Cargo.toml
crates.ioopentelemetry-otlp0.32crates/mqtt5/Cargo.toml
crates.iotracing-opentelemetry0.33crates/mqtt5/Cargo.toml
crates.ioopentelemetry0.32crates/mqtt5/Cargo.toml
crates.iomqtt5-protocol0.15.1crates/mqtt5/Cargo.toml
crates.ioargon20.5crates/mqtt5/Cargo.toml
crates.iogetrandom0.4.3crates/mqtt5/Cargo.toml
crates.iobebytes3.0crates/mqtt5/Cargo.toml
crates.ioregex1.12.2crates/mqtt5/Cargo.toml
crates.ioflume0.12.0crates/mqtt5/Cargo.toml
crates.ioparking_lot0.12.5crates/mqtt5/Cargo.toml
crates.ioflate21.1.8crates/mqtt5/Cargo.toml
crates.iozeroize1.8.2crates/mqtt5/Cargo.toml
crates.iomqtt50.40crates/mqttv5-cli/Cargo.toml
crates.ioanyhow1.0.103crates/mqttv5-cli/Cargo.toml
crates.iotracing0.1crates/mqttv5-cli/Cargo.toml
crates.ioserde1.0crates/mqttv5-cli/Cargo.toml
crates.ioserde_json1.0.145crates/mqttv5-cli/Cargo.toml
crates.iohex0.4.3crates/mqttv5-cli/Cargo.toml
crates.iogetrandom0.4.3crates/mqttv5-cli/Cargo.toml
crates.iohumantime2.4.0crates/mqttv5-cli/Cargo.toml
crates.iotime0.3.53crates/mqttv5-cli/Cargo.toml
crates.iobebytes3.0.2crates/mqttv5-cli/Cargo.toml
crates.ioflate21.1.9crates/mqttv5-cli/Cargo.toml
crates.ioquinn0.11.11crates/mqttv5-cli/Cargo.toml
All dependencies 73

Full resolved dependency set from the GitHub dependency graph: 54 direct and 19 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
crates.ioanyhow—direct
crates.ioargon2—direct
crates.iobase64—direct
crates.iobebytes—direct
crates.iobytes—direct
crates.ioconsole_error_panic_hook—direct
crates.ioflate2—direct
crates.ioflume—direct
crates.iofutures—direct
crates.iofutures-util—direct
crates.iogetrandom—direct
crates.iogloo-timers—direct
crates.iohashbrown—direct
crates.iohex—direct
crates.iohttp—direct
crates.iohumantime—direct
crates.iojs-sys—direct
crates.iolibtest-mimic—direct
crates.iolinkme—direct
crates.iominiz_oxide—direct
crates.iomqtt5—direct
crates.iomqtt5-conformance—direct
crates.iomqtt5-conformance-macros—direct
crates.iomqtt5-protocol—direct
crates.ioopentelemetry—direct
crates.ioopentelemetry-otlp—direct
crates.ioopentelemetry_sdk—direct
crates.ioparking_lot—direct
crates.ioportable-atomic—direct
crates.ioportable-atomic-util—direct
crates.ioproc-macro2—direct
crates.ioquinn—direct
crates.ioquote—direct
crates.iorand—direct
crates.ioregex—direct
crates.ioserde—direct
crates.ioserde_json—direct
crates.iosha2—direct
crates.iosyn—direct
crates.iothiserror—direct
crates.iotime—direct
crates.iotokio—direct
crates.iotokio-tungstenite—direct
crates.iotoml—direct
crates.iotracing—direct
crates.iotracing-opentelemetry—direct
crates.iotracing-subscriber—direct
crates.ioturmoil—direct
crates.ioulid—direct
crates.iourl—direct
crates.iowasm-bindgen—direct
crates.iowasm-bindgen-futures—direct
crates.ioweb-sys—direct
crates.iozeroize—direct
crates.ioclap—indirect
crates.iodialoguer—indirect
crates.iohttp-body-util—indirect
crates.iohumantime-serde—indirect
crates.iohyper—indirect
crates.iohyper-rustls—indirect
crates.iohyper-util—indirect
crates.ioproptest—indirect
crates.iorcgen—indirect
crates.ioring—indirect
crates.iorpassword—indirect
crates.iorustls—indirect
crates.iorustls-pki-types—indirect
crates.iotempfile—indirect
crates.iotokio-rustls—indirect
crates.iotokio-test—indirect
crates.iowasm-bindgen-test—indirect
crates.ioweb-time—indirect
crates.iowebpki-roots—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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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.