Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-10 04:05 UTC

ChainSafe / ssz

Typescript implementation of Simple Serialize (SSZ)

TypeScript · WebAssemblyCustom license★ 61 stars⑂ 26 forkssince Feb 2020View on GitHub ↗

ChainSafe/ssz holds a health index of 84 out of 100, placing it in the Excellent band. It scores highest on Vitality (77/100) and lowest on AI Readiness (60/100). It was last updated 8 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

ChainSafeOrganization · verified domain
790 followers491 public repossince Apr 2017

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

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publishTags
npm@chainsafe/ssz1.7.0542,381918 days agoethereumserenitysimple-serializessz
npm@chainsafe/as-sha2561.2.5779,3282522 days ago—
npm@chainsafe/persistent-ts1.0.34,42111141 days agopersistentfunctionaltypescript
npm@chainsafe/persistent-merkle-tree1.3.1539,5873622 days agohashethereummerkletree

Metrics by category

Vitality

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

77Good · 21% of overall
How it's scored
28.8/36Push recency — last push 8 days ago
7.6/36Commit cadence — 11/52 weeks with commits
14.2/18Commit volume — 37 commits in the last year
10/10OpenSSF Scorecard: Maintained — 10 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year37
human_commit_share0.87
days_since_last_push8
active_weeks_last_year11

Release discipline

100Exceptional
How it's scored
27/27Ships releases — 83 releases published
36/36Release recency — latest release 8 days ago
27/27Release cadence — a release every ~14.8 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count83
latest_release_tagssz-v1.7.0
releases_from_tagsno
days_since_latest_release8
mean_days_between_releases14.8
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?

60Moderate · 17% of overall
How it's scored
28.8/60Stars — 61 stars
11.7/25Forks — 26 forks
3.9/15Watchers — 6 watchers
Inputs used
forks26
stars61
watchers6
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history
How it's scored
22.5/22.5README
16.9/22.5License — license file present, not a recognized license
0/18CONTRIBUTING guide
0/13.5Code of conduct
0/7.2Issue template
6.3/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges6
has_contributingno
has_issue_templateno
has_code_of_conductno
readme_badge_servicesshields.io
has_pull_request_templateyes
How it's scored
80/80Monthly downloads — 1,865,717 downloads/month across npm
0/20Registry dependents — not reported by this ecosystem
Inputs used
packages@chainsafe/ssz, @chainsafe/as-sha256, @chainsafe/persistent-ts, @chainsafe/persistent-merkle-tree
dependents—
ecosystemsnpm
total_downloads—
monthly_downloads1,865,717
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?

77Good · 23% of overall
How it's scored
9/54Bus factor — 1 contributor(s) cover half of all commits
9.9/22.5Commit distribution — top contributor authored 56% of commits
13.5/13.5Contributor breadth — 27 contributors
10/10OpenSSF Scorecard: Contributors — project has 23 contributing companies or organizations
Inputs used
bus_factor1
contributors_sampled27
top_contributor_share0.558
How it's scored
32.1/42Issue resolution — 76% of issues closed
24.4/30PR acceptance — 338/415 decided PRs merged
0/13Newcomer PR acceptance — no first-time contributor's PR decided in 30d
13.5/15OpenSSF Scorecard: Code-Review — Found 19/21 approved changesets -- score normalized to 9
Inputs used
merged_prs338
open_issues27
closed_issues88
prs_merged_7d0
prs_decided_7d0
prs_merged_30d2
prs_decided_30d2
issue_closed_ratio0.765
closed_unmerged_prs77
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.
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
20.8/25Owner reach — 790 followers of ChainSafe
25/25Track record — 491 public repos, account ~9 yr old
Inputs used
followers790
owner_typeOrganization
is_verifiedyes
owner_loginChainSafe
public_repos491
account_age_days3,435

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 4 package(s) on npm
35/35Publish recency — latest publish 8 days ago
20/20Version history — 91 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packages@chainsafe/ssz, @chainsafe/as-sha256, @chainsafe/persistent-ts, @chainsafe/persistent-merkle-tree
ecosystemsnpm
any_deprecatedno
min_days_since_publish8

Engineering Quality

Are baseline engineering and documentation practices in place?

70Good · 19% of overall
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
18/20OpenSSF Scorecard: CI-Tests — 27 out of 30 merged PRs checked by a CI test -- score normalized to 9
Inputs used
has_ciyes
has_testsyes
has_editorconfigno
has_linter_configno
has_precommit_configno
How it's scored
30/30README
0/25Documentation directory
15/15Documentation / homepage site — https://simpleserialize.com/
10/10Repository description
10/10Topics — 5 topics
10/10Wiki
Inputs used
topicssimple-serialize, eth2, merkle-tree, ssz, typescript
has_wikiyes
homepagehttps://simpleserialize.com/
docs_sitehttps://simpleserialize.com/
has_readmeyes
has_docs_dirno
has_descriptionyes

Security

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

69Good · 16% of overall
How it's scored
4.5/7.5Binary-Artifacts — binaries present in source code
0/7.5Branch-Protection — no data
2.2/2.5CI-Tests — 27 out of 30 merged PRs checked by a CI test -- score normalized to 9
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
6.8/7.5Code-Review — Found 19/21 approved changesets -- score normalized to 9
2.5/2.5Contributors — project has 23 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
5/5Fuzzing — project is fuzzed
2.2/2.5License — license file detected
7.5/7.5Maintained — 10 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
5/5Packaging — packaging workflow detected
1.5/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
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 — detected GitHub workflow tokens with excessive permissions
0/7.5Vulnerabilities — 114 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated16
scorecard_versionv5.5.0
checks_inconclusive2
scorecard_aggregate6.1
Excluded from scoring (no data or not applicable): Branch-Protection, Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
25/25Indirect dependencies free of known advisories — no indirect dependency carries a known advisory
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages10
unassessed_packages0
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the npm:@chainsafe/ssz@1.7.0 runtime dependency closure — what installing the published package pulls in — 10 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.

60Moderate · 4% of overall
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 87 of 87 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share1
agent_instruction_files—
agent_instruction_max_bytes—
How it's scored
0/18One-command bootstrap
22/22Automated tests
0/11Lint / format config
11/11Static type checking — packages/as-sha256/assembly/tsconfig.json, packages/as-sha256/tsconfig.json, packages/persistent-merkle-tree/tsconfig.json, packages/persistent-ts/tsconfig.json, packages/ssz/tsconfig.json, tsconfig.json
10/10Reproducible environment — lockfile
6/10Demonstrated agent practice — 3 of the last 100 commits agent-authored or agent-credited
8/8Automated maintenance — 4 of the last 100 commits are automated dependency updates
3/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 3
Inputs used
has_nixno
has_testsyes
lockfilespnpm-lock.yaml
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configno
typecheck_configspackages/as-sha256/assembly/tsconfig.json, packages/as-sha256/tsconfig.json, packages/persistent-merkle-tree/tsconfig.json, packages/persistent-ts/tsconfig.json, packages/ssz/tsconfig.json, tsconfig.json
agent_commit_share0.03
toolchain_manifests—
dependency_bot_commit_share0.04
How it's scored
45/45Type-checkable code — TypeScript (statically typed)
55/55Manageable file sizes — 0/320 source files over 60KB
Inputs used
primary_languageTypeScript
largest_source_bytes55,687
source_files_sampled320
oversized_source_files0

Key facts

61GitHub stars
27contributors
37commits, last 12 months
8days since last push
83releases
1bus factor
27open issues
npmpackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token

More detail

Star and fork history 0 ★ / 26 ⇿
0Stars
26Forks
83Releases

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.

0510152025302612020-062023-082026-09
Major 0Minor 0Patch 1

Each point covers 6 days.

OpenSSF Scorecard 6.1 / 10
6.1aggregate

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 · 2026-09-10 04:04 UTC

6Binary-Artifactsbinaries present in source code
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
9CI-Tests27 out of 30 merged PRs checked by a CI test -- score normalized to 9
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
9Code-ReviewFound 19/21 approved changesets -- score normalized to 9
10Contributorsproject has 23 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
10Fuzzingproject is fuzzed
9Licenselicense file detected
10Maintained10 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
10Packagingpackaging workflow detected
3Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 3
0SASTSAST tool is not run on all commits -- score normalized to 0
0Security-Policysecurity policy file not detected
n/aSigned-Releasesno releases found
0Token-Permissionsdetected GitHub workflow tokens with excessive permissions
0Vulnerabilities114 existing vulnerabilities detected
Direct dependencies 5
RegistryPackageVersion constraintManifest
npm@chainsafe/as-sha256workspace:packages/persistent-merkle-tree/package.json
npm@chainsafe/hashtree1.0.2packages/persistent-merkle-tree/package.json
npm@noble/hashes^1.3.0packages/persistent-merkle-tree/package.json
npm@chainsafe/as-sha256workspace:packages/ssz/package.json
npm@chainsafe/persistent-merkle-treeworkspace:packages/ssz/package.json
All dependencies 682

Full resolved dependency set from the GitHub dependency graph: 5 direct and 677 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
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Dependency advisories 0

Installing npm:@chainsafe/ssz@1.7.0 pulls in 10 packages, direct and transitive: 0 carry known advisories, of which 0 are direct dependencies.

No known advisories affect the assessed dependencies.

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.

The message is kept through sign-in.

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 — npm.