Public recordGood
Software health reportschema 0.27.0 · metrics 1.13.0 · 2026-07-26 00:42 UTC
stan-dev / stanc3
The Stan transpiler (from Stan to C++ and beyond).
stan-dev/stanc3 holds a health index of 71 out of 100, placing it in the Good band. It scores highest on Vitality (90/100) and lowest on Security (48/100). It was last updated 1 day ago. 3 contributors account for most of its recent work.
71
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.
71
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
StanOrganization
542 followers52 public repossince Jan 2013
This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.
Metrics by category
Vitality
Is the project alive — is code being written and are releases shipping?
90
Development activity
94Excellent
How it's scored
| 36/36 | Push recency — last push 1 days ago |
| 29.8/36 | Commit cadence — 43/52 weeks with commits |
| 18/18 | Commit volume — 345 commits in the last year |
| 10/10 | OpenSSF Scorecard: Maintained — 30 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10 |
Inputs used
| commits_last_year | 345 |
| human_commit_share | 1 |
| days_since_last_push | 1 |
| active_weeks_last_year | 43 |
Release discipline
83Good
How it's scored
| 27/27 | Ships releases — 56 releases published |
| 36/36 | Release recency — latest release 1 days ago |
| 19.8/27 | Release cadence — a release every ~46 days |
| 0/10 | OpenSSF Scorecard: Signed-Releases — Project has not signed or included provenance with any releases. |
Inputs used
| releases_count | 56 |
| latest_release_tag | nightly |
| releases_from_tags | no |
| days_since_latest_release | 1 |
| mean_days_between_releases | 46 |
Community & Adoption
Does the project have users, downloads, attention, and a welcoming setup for contributors?
58
Popularity & adoption
58Moderate
How it's scored
| 35.8/60 | Stars — 161 stars |
| 14.4/25 | Forks — 54 forks |
| 7.8/15 | Watchers — 26 watchers |
Inputs used
| forks | 54 |
| stars | 161 |
| watchers | 26 |
| growth_state | unverified |
| growth_factor_pct | 100 |
| growth_unverified_reason | no_history |
Community health
57Moderate
How it's scored
| 22.5/22.5 | README |
| 22.5/22.5 | License — recognized license (BSD-3-Clause) |
| 0/18 | CONTRIBUTING guide |
| 0/13.5 | Code of conduct |
| 0/7.2 | Issue template |
| 6.3/6.3 | PR template |
Inputs used
| has_readme | yes |
| has_license | yes |
| has_contributing | no |
| has_issue_template | no |
| has_code_of_conduct | no |
| has_pull_request_template | yes |
Sustainability & Governance
Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?
78
How it's scored
| 36/54 | Bus factor — 3 contributor(s) cover half of all commits |
| 16.7/22.5 | Commit distribution — top contributor authored 26% of commits |
| 13.5/13.5 | Contributor breadth — 30 contributors |
| 10/10 | OpenSSF Scorecard: Contributors — project has 24 contributing companies or organizations |
Inputs used
| bus_factor | 3 |
| contributors_sampled | 30 |
| top_contributor_share | 0.258 |
Issue & PR responsiveness
85Excellent
How it's scored
| 40.8/46.8 | Issue resolution — 87% of issues closed |
| 33.6/38.3 | PR acceptance — 830/944 decided PRs merged |
| 10.5/15 | OpenSSF Scorecard: Code-Review — Found 6/8 approved changesets -- score normalized to 7 |
Inputs used
| merged_prs | 830 |
| open_issues | 82 |
| closed_issues | 561 |
| issue_closed_ratio | 0.872 |
| closed_unmerged_prs | 114 |
Ownership & stewardship
74Good
How it's scored
| 30/30 | Ownership backing — organization-owned |
| 0/20 | Verified domain |
| 19.7/25 | Owner reach — 542 followers of stan-dev |
| 24.6/25 | Track record — 52 public repos, account ~13 yr old |
Inputs used
| followers | 542 |
| owner_type | Organization |
| is_verified | — |
| owner_login | stan-dev |
| public_repos | 52 |
| account_age_days | 4,930 |
Engineering Quality
Are baseline engineering and documentation practices in place?
71
Engineering practices
68Moderate
How it's scored
| 24/24 | CI workflows — 1 workflow(s) |
| 24/24 | Tests present |
| 0/16 | Linter config |
| 0/9.6 | Pre-commit hooks |
| 0/6.4 | .editorconfig |
| 20/20 | OpenSSF Scorecard: CI-Tests — 8 out of 8 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 | no |
| has_precommit_config | no |
Documentation
75Good
How it's scored
| 30/30 | README |
| 25/25 | Documentation directory |
| 0/15 | Documentation / homepage site |
| 10/10 | Repository description |
| 0/10 | Topics |
| 10/10 | Wiki |
Inputs used
| topics | — |
| 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?
48
Security posture
48At risk
How it's scored
| 6.8/7.5 | Binary-Artifacts — binaries present in source code |
| 0/7.5 | Branch-Protection — no data |
| 2.5/2.5 | CI-Tests — 8 out of 8 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 |
| 5.2/7.5 | Code-Review — Found 6/8 approved changesets -- score normalized to 7 |
| 2.5/2.5 | Contributors — project has 24 contributing companies or organizations |
| 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 3 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 — Project has not signed or included provenance with any releases. |
| 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 | 4.8 |
Excluded from scoring (no data or not applicable): branch_protection, packaging. Remaining weights renormalized.
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.
53
Agent context & guidance
20Critical
How it's scored
| 0/45 | Agent instructions — no CLAUDE.md / AGENTS.md / editor rules |
| 0/15 | Machine-readable docs (llms.txt) |
| 19.7/40 | Legible commit history — 37 of 100 human commits state their intent (structured subject or explanatory body) |
Inputs used
| has_llms_txt | no |
| legible_history_share | 0.37 |
| agent_instruction_files | — |
| agent_instruction_max_bytes | — |
Verify loop (build / test / typecheck)
61Moderate
How it's scored
| 18/18 | One-command bootstrap — Makefile |
| 22/22 | Automated tests |
| 0/11 | Lint / format config |
| 11/11 | Static type checking — OCaml (statically typed) |
| 10/10 | Reproducible environment — Dockerfile, Nix |
| 0/10 | Demonstrated agent practice — no agent-authored commits among the last 100 |
| 0/8 | Automated maintenance — no automated dependency updates observed |
| 0/10 | OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 0 |
Inputs used
| has_nix | yes |
| has_tests | yes |
| lockfiles | — |
| has_dockerfile | yes |
| typed_language | yes |
| bootstrap_files | Makefile |
| has_devcontainer | no |
| has_linter_config | no |
| typecheck_configs | — |
| agent_commit_share | 0 |
| toolchain_manifests | — |
| dependency_bot_commit_share | 0 |
Code legibility for models
100Excellent
How it's scored
| 45/45 | Type-checkable code — OCaml (statically typed) |
| 55/55 | Manageable file sizes — 0/21 source files over 60KB |
Inputs used
| primary_language | OCaml |
| largest_source_bytes | 2,881 |
| source_files_sampled | 21 |
| oversized_source_files | 0 |
Key facts
161GitHub stars
30contributors
345commits, last 12 months
1days since last push
56releases
3bus factor
82open issues
—package ecosystems
Data collection warnings
- Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
More detail
Star and fork history 0 ★ / 54 ⇿
0Stars
54Forks
55Releases
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.
Major 0Minor 18Patch 12
Each point covers 7 days.
OpenSSF Scorecard 4.8 / 10
4.8aggregate
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).
| 9 | Binary-Artifacts | binaries present in source code |
| n/a | Branch-Protection | internal 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 |
| 10 | CI-Tests | 8 out of 8 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 |
| 7 | Code-Review | Found 6/8 approved changesets -- score normalized to 7 |
| 10 | Contributors | project has 24 contributing companies or organizations |
| 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 3 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 |
| 0 | Signed-Releases | Project has not signed or included provenance with any releases. |
| 0 | Token-Permissions | detected GitHub workflow tokens with excessive permissions |
| 10 | Vulnerabilities | 0 existing vulnerabilities detected |
All dependencies 0
Full resolved dependency set from the GitHub dependency graph: 0 direct and 0 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.
| Registry | Package | Version | Relation |
|---|
Dependency advisories not assessed
Advisory matching could not run for this report: No resolved dependencies to assess
Raw JSON report machine-readable
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"name": "Engineering practices",
"note": null,
"notes": [],
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{
"key": "tests_present",
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{
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{
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},
{
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{
"key": "openssf_scorecard_ci_tests",
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}
]
},
{
"key": "documentation",
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{
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},
{
"key": "documentation_homepage_site",
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},
{
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},
{
"key": "topics",
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},
{
"key": "wiki",
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}
]
}
],
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},
{
"key": "security",
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"name": "Security",
"value": 48,
"weight": 0.16,
"metrics": [
{
"key": "security_posture",
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"notes": [
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}
},
{
"code": "weights_renormalized",
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}
],
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"scorecard_version": "v5.5.0",
"checks_inconclusive": 2,
"scorecard_aggregate": 4.8
},
"components": [
{
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"points": 6.8,
"status": "partial",
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},
{
"key": "branch_protection",
"name": "Branch-Protection",
"detail": "internal 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",
"points": 0,
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}
],
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},
{
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},
{
"key": "cii_best_practices",
"name": "CII-Best-Practices",
"detail": "no effort to earn an OpenSSF best practices badge detected",
"points": 0,
"status": "missed",
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},
{
"key": "code_review",
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"points": 5.2,
"status": "partial",
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},
{
"key": "contributors",
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"points": 2.5,
"status": "met",
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},
{
"key": "dangerous_workflow",
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"points": 10,
"status": "met",
"details": [],
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},
{
"key": "dependency_update_tool",
"name": "Dependency-Update-Tool",
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"points": 0,
"status": "missed",
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},
{
"key": "fuzzing",
"name": "Fuzzing",
"detail": "project is not fuzzed",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "license",
"name": "License",
"detail": "license file detected",
"points": 2.5,
"status": "met",
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"max_points": 2.5
},
{
"key": "maintained",
"name": "Maintained",
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"points": 7.5,
"status": "met",
"details": [],
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},
{
"key": "packaging",
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"detail": "packaging workflow not detected",
"points": 0,
"status": "excluded",
"details": [
{
"code": "no_data",
"params": {}
}
],
"max_points": 5
},
{
"key": "pinned_dependencies",
"name": "Pinned-Dependencies",
"detail": "dependency not pinned by hash detected -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "sast",
"name": "SAST",
"detail": "SAST tool is not run on all commits -- score normalized to 0",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "security_policy",
"name": "Security-Policy",
"detail": "security policy file not detected",
"points": 0,
"status": "missed",
"details": [],
"max_points": 5
},
{
"key": "signed_releases",
"name": "Signed-Releases",
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"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "token_permissions",
"name": "Token-Permissions",
"detail": "detected GitHub workflow tokens with excessive permissions",
"points": 0,
"status": "missed",
"details": [],
"max_points": 7.5
},
{
"key": "vulnerabilities",
"name": "Vulnerabilities",
"detail": "0 existing vulnerabilities detected",
"points": 7.5,
"status": "met",
"details": [],
"max_points": 7.5
}
]
},
{
"key": "high_risk_jurisdiction_exposure",
"band": "excellent",
"name": "High-Risk Jurisdiction Exposure",
"note": "Only high-confidence self-published location evidence affects this multiplier. Ambiguous matches are review-only; country evidence is not proof of nationality, citizenship, legal registration, malicious intent, or sanctions status.",
"notes": [
{
"code": "jurisdiction_evidence_limits",
"params": {}
}
],
"value": 100,
"inputs": {
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"red_flag": false,
"exposures": [],
"policy_countries": [
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"Iran",
"North Korea"
],
"review_only_matches": 0,
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},
"components": [
{
"key": "policy_exposure_multiplier",
"name": "Policy exposure multiplier",
"detail": "no confirmed policy-scope location match",
"points": 100,
"status": "met",
"details": [
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"code": "jurisdiction_no_match",
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}
],
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}
]
}
],
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},
{
"key": "ai_readiness",
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"name": "AI Readiness",
"value": 53,
"weight": 0,
"metrics": [
{
"key": "ai_agent_context",
"band": "critical",
"name": "Agent context & guidance",
"note": null,
"notes": [],
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"inputs": {
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"legible_history_share": 0.37,
"agent_instruction_files": [],
"agent_instruction_max_bytes": null
},
"components": [
{
"key": "agent_instructions",
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"points": 0,
"status": "missed",
"details": [
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"code": "no_agent_instructions",
"params": {}
}
],
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},
{
"key": "machine_readable_docs_llms_txt",
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"points": 0,
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},
{
"key": "legible_commit_history",
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"points": 19.7,
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"code": "legible_history",
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}
}
],
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}
]
},
{
"key": "ai_verify_loop",
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"note": null,
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},
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"code": "file_list",
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},
{
"key": "automated_tests",
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},
{
"key": "lint_format_config",
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},
{
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{
"key": "reproducible_environment",
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],
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},
{
"key": "demonstrated_agent_practice",
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],
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},
{
"key": "automated_maintenance",
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},
{
"key": "openssf_scorecard_pinned_dependencies",
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}
]
},
{
"key": "ai_code_legibility",
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"note": null,
"notes": [],
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},
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"key": "type_checkable_code",
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"code": "statically_typed_language",
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],
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},
{
"key": "manageable_file_sizes",
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}
}
],
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}
]
}
],
"description": "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."
}
],
"metrics_version": "1.13.0"
},
"warnings": [
"Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token"
],
"report_type": "repository",
"generated_at": "2026-07-26T00:42:59.144738Z",
"schema_version": "0.27.0",
"badge_url": "https://raw.githubusercontent.com/inspect-software/badges/main/v1/s/stan-dev/stanc3.svg",
"full_name": "stan-dev/stanc3",
"license_state": "standard",
"license_spdx": "BSD-3-Clause"
}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 v0.27.0 — full methodology · metrics wiki.
How one result sits in the wider record: aggregate statistics.