Public recordGood
Software health reportschema 0.16.0 · metrics 1.13.0 · 2026-07-21 03:01 UTC
foundation-model-stack / fastsafetensors
High-performance safetensors model loader
foundation-model-stack/fastsafetensors holds a health index of 72 out of 100, placing it in the Good band. It scores highest on Engineering Quality (90/100) and lowest on AI Readiness (44/100). It was last updated 13 days ago. A single contributor accounts for most of its recent work.
72
overall / 100Software health index
Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At risk ceiling of 49. AI Readiness sits outside the overall score.
72
Excellent85-100Exemplary; meets essentially all checked criteria
Good70-84Healthy; minor gaps
Moderate50-69Acceptable with notable gaps; review recommended
At risk30-49Significant weaknesses; adoption warrants caution
Critical1-29Severe 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.
Ownership
Foundation Model StackOrganization
151 followers29 public repossince May 2022
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Package ecosystems
| Registry | Package | Version | Downloads / mo | Versions | Last publish | Tags |
|---|---|---|---|---|---|---|
| PyPI | fastsafetensors | 0.3.3 | - | 21 | 13 days ago | fastsafetensorssafetensorsgds |
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
79
Development activity
71Good
How it's scored
| 28.8/36 | Push recency — last push 13 days ago |
| 15.9/36 | Commit cadence — 23/52 weeks with commits |
| 16.7/18 | Commit volume — 71 commits in the last year |
| 10/10 | OpenSSF Scorecard: Maintained — 30 commit(s) and 8 issue activity found in the last 90 days -- score normalized to 10 |
Inputs used
| commits_last_year | 71 |
| human_commit_share | — |
| days_since_last_push | 13 |
| active_weeks_last_year | 23 |
Release discipline
92Excellent
How it's scored
| 27/27 | Ships releases — 9 releases published |
| 36/36 | Release recency — latest release 13 days ago |
| 19.8/27 | Release cadence — a release every ~47.4 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — no data |
Inputs used
| releases_count | 9 |
| latest_release_tag | 0.3.3 |
| releases_from_tags | no |
| days_since_latest_release | 13 |
| mean_days_between_releases | 47.4 |
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?
59
Popularity & adoption
53Moderate
How it's scored
| 35.5/60 | Stars — 156 stars |
| 12.7/25 | Forks — 34 forks |
| 5/15 | Watchers — 9 watchers |
Inputs used
| forks | 34 |
| stars | 156 |
| watchers | 9 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
65Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (Apache-2.0) |
| 0/18 | CONTRIBUTING guide |
| 13.5/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 0/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | yes |
| has_pull_request_template | no |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
70
Maintainer resilience (bus factor)
39At risk
How it's scored
| 9/54 | Bus factor — 1 contributor(s) cover half of all commits |
| 6.8/22.5 | Commit distribution — top contributor authored 70% of commits |
| 13.5/13.5 | Contributor breadth — 18 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
Inputs used
| bus_factor | 1 |
| contributors_sampled | 18 |
| top_contributor_share | 0.696 |
Issue & PR responsiveness
88Excellent
How it's scored
| 43.6/46.8 | Issue resolution — 93% of issues closed |
| 37/38.3 | PR acceptance — 59/61 decided PRs merged |
| 7.5/15 | OpenSSF Scorecard: Code-Review — Found 5/9 approved changesets -- score normalized to 5 |
Inputs used
| merged_prs | 59 |
| open_issues | 2 |
| closed_issues | 28 |
| issue_closed_ratio | 0.933 |
| closed_unmerged_prs | 2 |
Ownership & stewardship
65Moderate
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain |
| 15.7/25 | Owner reach — 151 followers of foundation-model-stack |
| 19.1/25 | Track record — 29 public repos, account ~4 yr old |
Inputs used
| followers | 151 |
| owner_type | Organization |
| is_verified | — |
| owner_login | foundation-model-stack |
| public_repos | 29 |
| account_age_days | 1,524 |
Package maintenance
100Excellent
How it's scored
| 25/25 | Published & resolvable — 1 package(s) on pypi |
| 35/35 | Publish recency — latest publish 13 days ago |
| 20/20 | Version history — 21 published versions |
| 20/20 | Not deprecated — active, not deprecated or yanked |
Inputs used
| packages | fastsafetensors |
| ecosystems | pypi |
| any_deprecated | no |
| min_days_since_publish | 13 |
Engineering Quality
Are baseline engineering and documentation practices in place?
90
Engineering practices
94Excellent
How it's scored
| 24/24 | CI workflows — 5 workflow(s) |
| 24/24 | Tests present |
| 16/16 | Linter config |
| 9.6/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 20/20 | OpenSSF Scorecard: CI-Tests — 9 out of 9 merged PRs checked by a CI test -- score normalized to 10 |
Inputs used
| has_ci | yes |
| has_tests | yes |
| has_editorconfig | no |
| has_linter_config | yes |
| has_precommit_config | yes |
Documentation
85Excellent
How it's scored
| 30/30 | README |
| 25/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 10/10 | Topics — 3 topics |
| 10/10 | Wiki |
Inputs used
| topics | pytorch, safetensors, python |
| has_wiki | yes |
| homepage | — |
| has_readme | yes |
| has_docs_dir | yes |
| has_description | yes |
Security
Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?
58
Security posture
47At risk
How it's scored
| 7.5/7.5 | Binary-Artifacts — no binaries found in the repo |
| 0/7.5 | Branch-Protection — branch protection not enabled on development/release branches |
| 2.5/2.5 | CI-Tests — 9 out of 9 merged PRs checked by a CI test -- score normalized to 10 |
| 0/2.5 | CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected |
| 3.8/7.5 | Code-Review — Found 5/9 approved changesets -- score normalized to 5 |
| 2.5/2.5 | Contributors — project has 3 contributing companies or organizations -- score normalized to 10 |
| 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 |
| 7.5/7.5 | Maintained — 30 commit(s) and 8 issue activity found in the last 90 days -- score normalized to 10 |
| 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 |
| 0/7.5 | Token-Permissions — detected GitHub workflow tokens with excessive permissions |
| 7.5/7.5 | Vulnerabilities — 0 existing vulnerabilities detected |
Inputs used
| source | openssf_scorecard |
| checks_evaluated | 16 |
| scorecard_version | v5.5.0 |
| checks_inconclusive | 2 |
| scorecard_aggregate | 4.7 |
Excluded from scoring (no data or not applicable): packaging, signed_releases. Remaining weights renormalized.
Dependency advisories
100Excellent
How it's scored
| 35/35 | Direct dependencies free of known advisories — no direct dependency carries a known advisory |
| 25/25 | Indirect dependencies free of known advisories — no indirect dependency carries a known advisory |
| 0/40 | No advisories left outstanding — no advisory carries a publication date |
Inputs used
| source | osv |
| advisories | 0 |
| affected_packages | 0 |
| assessed_packages | 7 |
| unassessed_packages | 0 |
| affected_by_severity | none |
| direct_affected_packages | 0 |
Excluded from scoring (no data or not applicable): No advisories left outstanding. Remaining weights renormalized. Matched the pypi:fastsafetensors@0.3.3 runtime dependency closure — what installing the published package pulls in — 7 packages. Reachability is not analyzed.
AI Readiness
How well is the repo equipped to be developed and maintained with AI coding agents? An independent, experimental badge — weight 0.0, so it is surfaced on its own and does not affect the overall health score.
44
Agent context & guidance
1Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 0/40 | Legible commit history — no data |
Inputs used
| has_llms_txt | no |
| legible_history_share | — |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Excluded from scoring (no data or not applicable): Legible commit history. Remaining weights renormalized.
How it's scored
| 18/18 | One-command bootstrap — Makefile |
| 22/22 | Automated tests |
| 11/11 | Lint / format config |
| 0/11 | Static type checking |
| 10/10 | Reproducible environment — Dockerfile |
| 0/10 | Demonstrated agent practice — no data |
| 0/8 | Automated maintenance — no data |
| 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 | yes |
| typed_language | no |
| bootstrap_files | Makefile |
| has_devcontainer | no |
| has_linter_config | yes |
| typecheck_configs | — |
| agent_commit_share | — |
| toolchain_manifests | — |
| dependency_bot_commit_share | — |
Excluded from scoring (no data or not applicable): Demonstrated agent practice, Automated maintenance. Remaining weights renormalized.
Code legibility for models
55Moderate
How it's scored
| 0/45 | Type-checkable code — Python without a type-check config |
| 55/55 | Manageable file sizes — 0/58 source files over 60KB |
Inputs used
| primary_language | Python |
| largest_source_bytes | 53,636 |
| source_files_sampled | 58 |
| oversized_source_files | 0 |
Machine-readable interfaces
40At risk
How it's scored
| 0/40 | API schema (OpenAPI/GraphQL/proto) |
| 0/20 | MCP server |
| 40/40 | Runnable examples — examples |
Inputs used
| example_dirs | examples |
| has_mcp_signal | no |
| api_schema_files | — |
Key facts
156GitHub stars
18contributors
71commits, last 12 months
13days since last push
9releases
1bus factor
2open issues
PyPIpackage ecosystems
Data collection warnings
- Could not fetch pypi package 'fastsafetensors.cpp' from its registry
- Could not fetch pypi package 'fastsafetensors_perf' from its registry
More detail
OpenSSF Scorecard 4.7 / 10
4.7aggregate
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 |
| 0 | Branch-Protection | branch protection not enabled on development/release branches |
| 10 | CI-Tests | 9 out of 9 merged PRs checked by a CI test -- score normalized to 10 |
| 0 | CII-Best-Practices | no effort to earn an OpenSSF best practices badge detected |
| 5 | Code-Review | Found 5/9 approved changesets -- score normalized to 5 |
| 10 | Contributors | project has 3 contributing companies or organizations -- score normalized to 10 |
| 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 |
| 10 | Maintained | 30 commit(s) and 8 issue activity found in the last 90 days -- score normalized to 10 |
| 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 |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
Direct dependencies 5
| Registry | Package | Version constraint | Manifest |
|---|---|---|---|
| PyPI | fastsafetensors | >=0.1.0 | perf/pyproject.toml |
| PyPI | typer | >0.9.0 | perf/pyproject.toml |
| PyPI | torch | >2.1.0 | perf/pyproject.toml |
| PyPI | safetensors | ^0.4.3 | perf/pyproject.toml |
| PyPI | typer | >=0.9.0 | pyproject.toml |
All dependencies 54
Full resolved dependency set from the GitHub dependency graph: 7 direct and 47 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|---|---|---|
| PyPI | fastsafetensors | 0.3.1 | direct |
| PyPI | safetensors | — | direct |
| PyPI | safetensors | 0.4.5 | direct |
| PyPI | torch | — | direct |
| PyPI | torch | 2.11.0 | direct |
| PyPI | typer | — | direct |
| PyPI | typer | 0.25.1 | direct |
| PyPI | annotated-doc | 0.0.4 | indirect |
| PyPI | black | 26.3.1 | indirect |
| PyPI | click | 8.3.3 | indirect |
| PyPI | colorama | 0.4.6 | indirect |
| PyPI | cuda-bindings | 13.2.0 | indirect |
| PyPI | cuda-pathfinder | 1.5.4 | indirect |
| PyPI | cuda-toolkit | 13.0.2 | indirect |
| PyPI | fastsafetensor-3fs-reader | — | indirect |
| PyPI | filelock | 3.29.0 | indirect |
| PyPI | flake8 | 7.3.0 | indirect |
| PyPI | fsspec | 2026.4.0 | indirect |
| PyPI | isort | 6.1.0 | indirect |
| PyPI | jinja2 | 3.1.6 | indirect |
| PyPI | markdown-it-py | 4.2.0 | indirect |
| PyPI | markupsafe | 3.0.3 | indirect |
| PyPI | mdurl | 0.1.2 | indirect |
| PyPI | mpmath | 1.3.0 | indirect |
| PyPI | mypy | 1.19.1 | indirect |
| PyPI | networkx | 3.4.2 | indirect |
| PyPI | nvidia-cublas | 13.1.0.3 | indirect |
| PyPI | nvidia-cuda-cupti | 13.0.85 | indirect |
| PyPI | nvidia-cuda-nvrtc | 13.0.88 | indirect |
| PyPI | nvidia-cuda-runtime | 13.0.96 | indirect |
| PyPI | nvidia-cudnn-cu13 | 9.19.0.56 | indirect |
| PyPI | nvidia-cufft | 12.0.0.61 | indirect |
| PyPI | nvidia-cufile | 1.15.1.6 | indirect |
| PyPI | nvidia-curand | 10.4.0.35 | indirect |
| PyPI | nvidia-cusolver | 12.0.4.66 | indirect |
| PyPI | nvidia-cusparse | 12.6.3.3 | indirect |
| PyPI | nvidia-cusparselt-cu13 | 0.8.0 | indirect |
| PyPI | nvidia-nccl-cu13 | 2.28.9 | indirect |
| PyPI | nvidia-nvjitlink | 13.0.88 | indirect |
| PyPI | nvidia-nvshmem-cu13 | 3.4.5 | indirect |
| PyPI | nvidia-nvtx | 13.0.85 | indirect |
| PyPI | pre-commit | — | indirect |
| PyPI | pygments | 2.20.0 | indirect |
| PyPI | pytest | — | indirect |
| PyPI | pytest-cov | — | indirect |
| PyPI | rich | 15.0.0 | indirect |
| PyPI | setuptools | — | indirect |
| PyPI | setuptools | 81.0.0 | indirect |
| PyPI | shellingham | 1.5.4 | indirect |
| PyPI | sympy | 1.14.0 | indirect |
| PyPI | tqdm | — | indirect |
| PyPI | transformers | — | indirect |
| PyPI | triton | 3.6.0 | indirect |
| PyPI | typing-extensions | 4.15.0 | indirect |
Dependency advisories 0
Installing pypi:fastsafetensors@0.3.3 pulls in 7 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
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{
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{
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{
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"points": 0,
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{
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{
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"points": 19.1,
"status": "partial",
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{
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{
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{
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"note": null,
"notes": [],
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{
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"points": 35,
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"details": [
{
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{
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"details": [
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{
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"points": 20,
"status": "met",
"details": [
{
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{
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"weight": 0.2,
"metrics": [
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"notes": [],
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"components": [
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"details": [
{
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{
"key": "tests_present",
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{
"key": "linter_config",
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"details": [],
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{
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"points": 9.6,
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"details": [],
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{
"key": "editorconfig",
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"points": 0,
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"details": [],
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{
"key": "openssf_scorecard_ci_tests",
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]
},
{
"key": "documentation",
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"note": null,
"notes": [],
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"inputs": {
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{
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"points": 25,
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"details": [],
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{
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"points": 0,
"status": "missed",
"details": [],
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{
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"points": 10,
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{
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{
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"details": [],
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]
}
],
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{
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"weight": 0.16,
"metrics": [
{
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{
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"inputs": {
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"components": [
{
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"points": 7.5,
"status": "met",
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{
"key": "branch_protection",
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"points": 0,
"status": "missed",
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{
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{
"key": "cii_best_practices",
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"detail": "no effort to earn an OpenSSF best practices badge detected",
"points": 0,
"status": "missed",
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{
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{
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"points": 10,
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},
{
"key": "dependency_update_tool",
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"details": [],
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{
"key": "fuzzing",
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"status": "missed",
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{
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{
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{
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{
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"status": "missed",
"details": [],
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},
{
"key": "vulnerabilities",
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]
},
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"notes": [
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"components": [
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{
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{
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"points": 0,
"status": "excluded",
"details": [
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"code": "advisories_no_publication_date",
"params": {}
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],
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]
},
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"inputs": {
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"direct_malicious_packages": 0,
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"installable_malicious_packages": 0
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"components": [
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"details": [
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"max_points": 100
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{
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"notes": [
{
"code": "jurisdiction_evidence_limits",
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}
],
"value": 100,
"inputs": {
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"exposures": [],
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"review_only_matches": 0,
"assessed_self_published_locations": 8
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"components": [
{
"key": "policy_exposure_multiplier",
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"status": "met",
"details": [
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"code": "jurisdiction_no_match",
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],
"max_points": 100
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]
}
],
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{
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"name": "AI Readiness",
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"weight": 0,
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"params": {
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"components": [
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"status": "missed",
"details": [
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"max_points": 45
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{
"key": "machine_readable_docs_llms_txt",
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"points": 0,
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"status": "excluded",
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"code": "excluded_no_data",
"params": {
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{
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"components": [
{
"key": "one_command_bootstrap",
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"points": 18,
"status": "met",
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"points": 22,
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{
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"status": "met",
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{
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"points": 0,
"status": "missed",
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{
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{
"key": "demonstrated_agent_practice",
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"points": 0,
"status": "excluded",
"details": [
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],
"max_points": 10
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{
"key": "automated_maintenance",
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"points": 0,
"status": "excluded",
"details": [
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"max_points": 8
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{
"key": "openssf_scorecard_pinned_dependencies",
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{
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"notes": [],
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"source_files_sampled": 58,
"oversized_source_files": 0
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"components": [
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"status": "missed",
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{
"key": "manageable_file_sizes",
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"points": 55,
"status": "met",
"details": [
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],
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]
},
{
"key": "ai_interfaces",
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"notes": [],
"value": 40,
"inputs": {
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"api_schema_files": []
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"components": [
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"points": 0,
"status": "missed",
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{
"key": "mcp_server",
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"points": 0,
"status": "missed",
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{
"key": "runnable_examples",
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"status": "met",
"details": [
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"warnings": [
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"schema_version": "0.16.0",
"badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/f/foundation-model-stack/fastsafetensors.svg",
"full_name": "foundation-model-stack/fastsafetensors",
"license_state": "standard",
"license_spdx": "Apache-2.0"
}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 v1.13.0, schema v0.16.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics — PyPI.