Executive summary
Read through the Production lens — the standard calibration. *Green* means good enough to run in production. The score is absolute and comparable across repos.
fscheck/FsCheck is sound in substance but carries real gaps (63%). It is not in crisis, but the issues below raise the cost of changing it — friction its consumers ultimately inherit.
It is strongest in Architecture (97%) — the structure is clean and changes stay contained. Security (85%) is solid too.
The area that most needs attention is Maturity (56%) — onboarding is slow — key decisions and the architecture aren't written down, so contributors have to reverse-engineer the intent. Readiness (59%) is the next concern — releases are harder to depend on — versioning, release notes and dependency hygiene are thin, so consumers can't easily tell what changed or trust an upgrade.
Leadership focus, highest impact first: Record significant decisions one document per decision (Architecture documentation); build/run (quick start) section to the root README (Documentation (README)); 1 redundant comment finding(s) (Comment Value).
For scale: Hobby (~179 production lines); rebuilding it from scratch would take roughly ~0.1 person-years (~1 engineer). Approximate, ±~30%.
Encouragingly, the gaps are in documentation and release process — not in the code's correctness, structure or security, which are strong. They're low-risk to close, and doing so would lift the grade without re-engineering anything that already works.
Raise Maturity 56 → 70 (the Healthy floor) ⇒ headline 63 → ~68.
Rebuild cost & value ~ Modeled — €1,700–€8,600
| Cost to rebuild | €1,700–€8,600 |
| Domain complexity | Low |
| Quality factor | 0.9× (at 63% quality) |
| Size & shape | Hobby · 18% boilerplate · 74% straight-line · 7% branching logic |
Top priorities
Diagnosis — what's actually going on
At a glance — Code Health
At a glance — Architecture
At a glance — Maturity
At a glance — Readiness
At a glance — Security
Security & Compliance — OWASP Top-10 mapping
| OWASP category | Findings | Severity |
|---|---|---|
| A06:2021 — Vulnerable & Outdated Components | 2 | High / Critical |
| A02:2021 — Cryptographic Failures | 1 | Medium |
Roadmap
Begin by establishing a centralized repository for architecture decisions, ensuring all significant design choices are documented with their context and consequences. Simultaneously, update the root README to include a quick-start section that guides new contributors through the build and run process. Next, address technical debt by resolving redundant comments in Properties.cs and enabling nullable reference types across all projects to eliminate warnings. Finally, strengthen the CI/CD pipeline by running the test suite on every merge to ensure code quality and stability.
| Do this | Helps | Effort | Dimension |
|---|---|---|---|
| Resolve the 1 redundant comment finding(s) in Comment Value — start with Properties.cs. | +5.0 pts | Low | Comment Value |
| Record significant decisions one document per decision — dated, stating the context, the decision and its consequences — and keep them together wherever your design docs already live (a conventional `docs/adr/` tree with `NNNN-title.md` names is the most discoverable form). | +7.8 pts | Medium | Architecture documentation |
| Add a build/run (quick start) section to the root README — the first thing a newcomer needs. | +7.7 pts | Medium | Documentation (README) |
| Resolve the 2 Low XML-doc coverage finding(s) in Documentation Quality — start with FsCheck.CSharpExamples.csproj, CSharp.DocSnippets.csproj. | +2.4 pts | Low | Documentation Quality |
| Resolve the 1 Further orphaned files (smaller) finding(s) in Knowledge Freshness. | +1.9 pts | Low | Knowledge Freshness |
| Run the test suite in CI via an explicit runner step for your stack, and gate merges on it. | +3.7 pts | Medium | CI/CD gates |
| Enable <Nullable>enable</Nullable> across all projects and resolve warnings rather than suppressing with `!`. | +2.8 pts | Medium | Nullable reference types |
| Resolve the 1 Scanner output unparseable finding(s) in Secrets (history). | +0.8 pts | Low | Secrets (history) |
File quality
| File | Score | Band | Worst signal |
|---|---|---|---|
| src/FsCheck.NUnit/FsCheckPropertyAttribute.fs | 7.2 | Mixed | Code Duplication: Duplicated block (17 lines × 3) |
| examples/FsCheck.CSharpExamples/Program.cs | 7.3 | Mixed | Code Duplication: Duplicated block (8 lines × 4) |
| src/FsCheck.Xunit.v3/PropertyAttribute.fs | 7.4 | Mixed | Code Duplication: Duplicated block (13 lines × 2) |
| src/FsCheck/Internals.DefaultArbs.fs | 7.8 | Mixed | God Classes: FileTooLong: FsCheck/Internals.DefaultArbs.fs |
| src/FsCheck/Runner.fs | 7.8 | Mixed | God Classes: FileTooLong: FsCheck/Runner.fs |
| examples/CSharp.DocSnippets/Properties.cs | 8.0 | Near-clean | Code Duplication: Duplicated block (9 lines × 2) |
| src/FsCheck.Xunit.v3/CheckExtensions.fs | 8.5 | Near-clean | Code Duplication: Duplicated block (12 lines × 2) |
| src/FsCheck.Xunit.v3/Runner.fs | 8.5 | Near-clean | Code Duplication: Duplicated block (8 lines × 2) |
| src/FsCheck/DefaultArbTypes.fs | 8.5 | Near-clean | Code Duplication: Duplicated block (7 lines × 3) |
| src/FsCheck/Internals.Reflect.fs | 8.5 | Near-clean | Code Duplication: Duplicated block (6 lines × 2) |
| examples/FsCheck.CSharpExamples/FsCheck.CSharpExamples.csproj | 8.5 | Near-clean | Documentation Quality: Low XML-doc coverage: FsCheck.CSharpExamples |
| examples/CSharp.DocSnippets/CSharp.DocSnippets.csproj | 8.5 | Near-clean | Documentation Quality: Low XML-doc coverage: CSharp.DocSnippets |
Methodology & how to trust this report
Watchdog is a deep, periodic assessment — run each sprint, monthly, or quarterly, taking the time to go wider and deeper than a quick check and surfacing in one coherent report what you'd otherwise piece together from a dozen separate tools. It scores deterministically: the same commit yields the same score, every run. 33 of 36 evaluated dimensions are computed purely by tools and static analysis (confidence 1.0); 3 documentation/naming judgement(s) are LLM-assisted and labelled advisory. Overall confidence is 0.5 — the weighted average across measured dimensions; it falls as more of the score leans on LLM-assisted judgement and rises when it's fully tool-backed.
What we checked — 36 dimensions across the health lenses
- Can you open the finding? Real findings cite a repo-relative file and line you can open at the cited line — never an absolute scratch path. Here, 22 of 30 do; the remainder are repo-wide signals — a dimension-level measurement, not a single line.
- Is there a tool behind the number? Every score below names the method that produced it — Roslyn, git, a scanner, or (for a handful of documentation/naming dimensions) an LLM labelled sampled · advisory — not a narrative.
- Does re-running give the same result? Run it again on the same commit and the score — and this report, byte for byte — is identical. A report whose numbers move between runs is describing the run, not the code.
Tools & methods
| Method | Backs | Version | Evaluator |
|---|---|---|---|
| Roslyn static analysis | Complexity, cohesion, coupling, dead code, API surface, layering | 5.3.0 | ✓ deterministic |
| Native secret scanner | Hardcoded secrets / credentials | 1.0.0 | ✓ deterministic |
| jscpd | Code duplication | — | ✓ deterministic |
| Coverage (coverlet / dotnet-coverage) | Line & branch coverage | 10.0.302 | ✓ deterministic |
| NuGet / dotnet | Outdated, vulnerable & deprecated dependencies | 10.0.302 | ✓ deterministic |
| git / LibGit2Sharp | Churn hotspots, knowledge concentration, history | 2.43.0 · 0.31.0 | ✓ deterministic |
| gitleaks · semgrep · trivy | Secrets in history, SAST, CVEs, IaC & container, PII / GDPR | 1.86.0 · 0.69.3 | ✓ deterministic |
| LLM (sampled · advisory) | Documentation quality, ADR conformance, naming — sampled over a bounded sample; advisory, never a deterministic measurement | Local LLM | ◐ LLM · sampled · advisory |
Run transparency — what happened this run
A clean run — every tool resolved and ran, and every applicable dimension was measured at full confidence. No scanner was unavailable, no analysis timed out or crashed, and nothing fell back to a degraded estimate.
Limitations & what we did not check
Watchdog assesses the repository exactly as committed, and only the repository. By design it does not reach outside the source tree: the live cloud account, the running CI/CD pipeline, the host's branch-protection and approval rules, the production configuration, or a restore actually exercised against a backup are all out of scope. That boundary is a feature, not a gap — a repo-relative, deterministic scan re-runs identically on any commit and every finding opens at a real file and line, where a live audit can neither be reproduced nor traced. The visible consequence is that controls which leave no in-repo evidence are reported as "not evidenced" and excluded from the score rather than awarded a number a static scan cannot justify.
Per-dimension blind spots
- D3 God Classes: "God class" is sized by members and responsibilities visible in the type — a deliberately broad facade over a coherent subsystem can read the same as an accidental grab-bag. For front-end JS the file-length check is cohesion-aware (a single-responsibility module — one class/IIFE — earns a 3× threshold), but cohesion is approximated from top-level declarations, not true dependency structure.
- D4 Code Duplication: Duplication is token-similarity (jscpd) — it finds copy-paste, not semantic duplication expressed differently. Committed machine-written code (scaffolded migrations, designer/codegen output, protobuf/OpenAPI stubs, model snapshots) is EXCLUDED — its repetition is the tool's, not the team's — so the score reflects hand-written duplication only.
- D5 Coupling: Coupling is measured between projects/assemblies — runtime coupling through DI, reflection, messaging or shared databases is invisible to a static reference graph.
- D9 Test Distribution: The test-pyramid shape is inferred from project/folder naming and references, with a single test host bucketed per-file by its path tier and content signals — a suite that names tiers unconventionally and gives no per-file signal can still be mis-bucketed.
- D10 Test Quality: Assertion density is structural — it cannot tell a meaningful behavioural assertion from a trivial one, only that an assertion is present.
- D11 Test Reliability: Flakiness is inferred from history/markers — Watchdog runs the suite once (for coverage), not the repeated runs under varied conditions that reveal nondeterminism, so a flaky test never recorded as failing is invisible here.
- D13 Secret Scanning: Secret detection is signature- and entropy-based on the current tree — a secret that does not match a known pattern, or one already rotated, will not be flagged (a clean scan is "nothing matched", not "no secrets exist").
- D14 License Compliance: License compatibility is checked against declared package metadata and a policy — mislabelled or missing license metadata, and obligations that depend on how you distribute, are not resolved here.
- D16 Bus Factor: Bus-factor is a time-decayed model of commit attribution (who has recently, repeatedly worked a file), not comprehension — pairing, review and reading-without-committing spread knowledge it can't see; bot commits and shared accounts still distort it.
- D17 Explicit Debt: Acknowledged-debt signals (TODO/FIXME, suppressions, dead code) are textual — undocumented debt that nobody marked, and debt that lives in design rather than annotations, is invisible. Committed machine-written code (scaffolded migrations, designer/codegen output, generated stubs) is excluded — it is never the team's dead code to delete.
- D19 Documentation Quality: Documentation quality is judged by an LLM over a bounded sample of docs — it reads what is written, not whether the docs match the running system, and it is advisory, not a measurement.
- D21 Naming Consistency: Naming quality is an LLM judgement over a bounded sample — it assesses clarity/consistency of the names it sees, not domain-correctness, and is advisory.
- D24 Comment Value: Comment value (WHY vs WHAT) is an LLM judgement over a bounded sample — it is advisory and cannot weigh a comment against the precise code change it was written to explain.
- D26 Project Cohesion: Project focus is sized from members/namespaces per project — a project that is broad by deliberate design reads the same as one that has sprawled.
- D28 Secrets (history): Secret-history scanning sweeps the git log for known patterns — a secret that predates the available history, or never matched a signature, is not found (clean means "nothing matched in the history we can see").
- D29 Static Analysis (SAST): SAST findings are pattern-based (semgrep) — it finds classes of bug it has rules for; logic flaws, auth/authorization gaps and issues needing runtime context are out of reach (and clean means "no rule matched").
- D30 Dependency Vulnerabilities: CVE matching depends on accurate package/version metadata and the advisory database — a vulnerability with no published advisory, or in code not declared as a dependency, is not seen.
- D34 Knowledge Freshness: Freshness is decayed commit RECENCY, not comprehension — code read often but rarely committed reads as orphaned, and stable code that genuinely needs no changes is penalised the same as forgotten code; bot/squash commits distort it like the bus factor.
- D35 Change Coupling: Change coupling is co-change in COMMITS — files split across separate commits, or coupled only through a shared config/build step, read as uncoupled, and a sweeping commit (rename/format) is excluded so it doesn't couple everything. It shows that files change together, not WHY: a high coupling can be a healthy cohesive pair as readily as a hidden leak.
- AX10 Code composition: Role is inferred from namespace/folder convention, not semantics — a domain concept living in a folder named "Services" reads as application, and the split is lines-of-code, not business value. The business-logic-share score is a SOFT, FLOORED signal: it contributes to the Architecture lens but is floored at the Critical gate, so an infrastructure-heavy design (a gateway, an ETL, a driver) is legitimately low without being nuked to zero.
- M4 Documentation accuracy: Onboarding quality is an LLM read of the docs/setup present — it cannot run the onboarding or measure how long a real new joiner takes; the verdict is sampled and advisory.
The LLM boundary
Dimensions
D3 · God Classes
2 god class(es) detected.
What to do
- Resolve the 2 FileTooLong finding(s) in God Classes — start with Internals.DefaultArbs.fs, Runner.fs. — One of this dimension's main actionable groups (2 warning-level).
- Enforce God Classes in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Prevented — provenance only; does not change the score.
D4 · Code Duplication
16 duplicated block group(s) detected.
What to do
- Resolve the 4 Duplicated block (12 lines × 2) finding(s) in Code Duplication — start with PropertyAttribute.fs (2), FsCheckPropertyAttribute.fs, CheckExtensions.fs. — One of this dimension's main actionable groups (4 warning-level).
- Resolve the 4 Duplicated block (8 lines × 2) finding(s) in Code Duplication — start with Runner.fs (2), Program.cs, Internals.DefaultArbs.fs. — One of this dimension's main actionable groups (4 warning-level).
- Resolve the 2 Duplicated block (12 lines × 3) finding(s) in Code Duplication — start with FsCheckPropertyAttribute.fs (2). — One of this dimension's main actionable groups (2 warning-level).
- Enforce Code Duplication in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Verified — provenance only; does not change the score.
D5 · Coupling
6 projects, 0 dependency cycle(s), 0 unstable depended-on project(s).
What to do
- Enforce Coupling in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Prevented — provenance only; does not change the score.
D9 · Test Distribution
14 test methods: 14 unit, 0 integration, 0 BDD, 0 e2e.
D10 · Test Quality
0 skipped, 0 zero-assertion, no mocking-framework packages referenced (hand-written doubles or no mocking) across 14 tests.
D11 · Test Reliability
0 flaky across 1 measured tier(s). other: measured (0 flaky).
D13 · Secret Scanning
Secret scan ran and found no leaked secrets.
D14 · License Compliance
0 of 6 packages use a banned license.
D16 · Bus Factor
1 source file(s) have their living knowledge concentrated in one author (≥90% of recent, decayed contribution). The largest is src/FsCheck/Internals.Common.fs.
D17 · Explicit Debt
0 deducted debt markers + 0 dead symbols across 552 LoC (0.0/KLoC) → score 10.0.
D19 · Documentation Quality
The FsCheck documentation is clear and complete for a tool whose primary value lies in its own description and release process. The README gives an excellent What-is-FsCheck overview plus releases on NuGet and Semantic Versioning notes, while the dedicated users.md lists notable adopters and cites academic work (one paper). LearningResources.md covers articles, books, and videos with links to external resources, giving a strong learning-path foundation. All outlined sections exist in the visible text; the clipped XML-doc coverage is not penalized.
What to do
- Resolve the 2 Low XML-doc coverage finding(s) in Documentation Quality — start with FsCheck.CSharpExamples.csproj, CSharp.DocSnippets.csproj. — One of this dimension's main actionable groups (2 warning-level).
D21 · Naming Consistency
0 naming inconsistencies across 200 sampled symbols.
D24 · Comment Value
8 valuable / 1 redundant across 95 sampled comments; 1 shown with locations.
What to do
- Resolve the 1 redundant comment finding(s) in Comment Value — start with Properties.cs. — One of this dimension's main actionable groups (1 recommendation-level).
D26 · Project Cohesion
0 of 6 projects flagged as possibly oversized/incoherent.
D28 · Secrets (history)
gitleaks produced no output — a clean scan reports `[]`, so this is a scan that did not run, not a repo without secrets
What to do
- Resolve the 1 Scanner output unparseable finding(s) in Secrets (history). — One of this dimension's main actionable groups (1 recommendation-level).
D29 · Static Analysis (SAST)
semgrep found no security issues.
D30 · Dependency Vulnerabilities
2 vulnerable package(s): 0 critical, 2 high, 0 medium, 0 low.
What to do
- Resolve the 2 High CVE finding(s) in Dependency Vulnerabilities. — One of this dimension's main actionable groups (2 issue-level).
D34 · Knowledge Freshness
2 of 22 significant source file(s) are orphaned — their living knowledge has decayed to nothing, so no one currently understands them. The largest is src/FsCheck/Internals.TypeClass.fs.
D35 · Change Coupling
No strong hidden change-coupling between production files.
D39 · IL Efficiency
1 of 13 first-party methods have an oversized IL body.
What to do
- Resolve the 1 IL efficiency finding(s) in IL Efficiency — start with Program.cs. — One of this dimension's main actionable groups (1 recommendation-level).
- Enforce IL Efficiency in CI to reach Verified (currently Documented). — Hardens enforcement from Documented toward Verified — provenance only; does not change the score.
Frontend & cross-cutting dimensions
AX10 · Code composition
What to do
- The domain core is a small share of production code — check that business logic isn't leaking into the application/infrastructure layers (a thin domain is the anemic-domain smell).
AX3 · Project dependency cycles
AX4 · Dependency direction
AX5 · Architecture & structure
AX8 · Test isolation
GD1 · Unfinished & placeholder code
- A shipped member still throws NotImplementedException — generated scaffolding that was never completed. Implement it or remove the dead surface. — Program.cs:45
What to do
- Finish or delete NotImplementedException stubs and replace placeholder literals before shipping.
M1 · Documentation (README)
What to do
- Add a build/run (quick start) section to the root README — the first thing a newcomer needs.
- Add a 'Testing' section to the root README — how to run the test suite.
- Add an 'Architecture' / 'How it works' section to the root README — the high-level shape.
- Add a README to the 6 of 6 project(s) that lack one — worth up to 2 pts.
M2 · Architecture documentation
- No Architecture Decision Records found — no conventional ADR directory, no `NNNN-title.md` documents and nothing ADR-shaped by content. Design rationale recorded elsewhere (a design-notes tree, a mailing list, pull-request discussion) is not visible to this check and is not re-findable per decision, so a future maintainer cannot ask why one choice was made and get an answer.
- No C4/PlantUML/Mermaid diagram or architecture.md — the high-level shape isn't documented.
What to do
- Record significant decisions one document per decision — dated, stating the context, the decision and its consequences — and keep them together wherever your design docs already live (a conventional `docs/adr/` tree with `NNNN-title.md` names is the most discoverable form).
- Add a C4 context/container diagram (Structurizr, PlantUML or Mermaid) or an architecture.md overview.
M3 · Folder & project structure
M4 · Documentation accuracy
P1 · CI/CD gates
- A CI pipeline exists and the word "test" appears, but no explicit test-runner invocation (your stack's test command, or a test job) was matched — so either the gate runs tests through a step this pass could not recognise, or "test" is incidental here (a path, "latest", a reporter). Check the coverage dimensions first: if this repo has no test suite yet, that is the finding and this row follows from it. If a suite does exist, make the runner step explicit so the gate is unambiguous.
What to do
- Run the test suite in CI via an explicit runner step for your stack, and gate merges on it.
P3 · Security & performance tooling
- No static application security testing detected. For this repository's stack, add `semgrep --config=auto` plus gitleaks for committed secrets (F# is not a CodeQL language and has no language-specific SAST engine) as a CI step.
What to do
- Add a SAST step to CI running what this repository's stack ships: `semgrep --config=auto` plus gitleaks for committed secrets (F# is not a CodeQL language and has no language-specific SAST engine) — so a security regression fails the build instead of landing.
- Enable Dependabot/Renovate or a dependency-review gate.
- Add gitleaks/trufflehog in CI to block PRs that introduce committed secrets.
X1 · Async correctness
X3 · Exception handling
X4 · Structured logging
X5 · Nullable reference types
- 0/2 NRT-eligible project(s) enable <Nullable>enable</Nullable> (projects targeting a pre-C#-8 framework are excluded — NRTs aren't available there). NRTs catch a whole class of null-deref bugs at compile time.
What to do
- Enable <Nullable>enable</Nullable> across all projects and resolve warnings rather than suppressing with `!`.
Reference — by lens
| Lens | Score | Rating | Impact |
|---|---|---|---|
| Code Health | 73% | Adequate — gated by X5 | Capped at Fair by a Critical contributor — resolve it before relying on this lens. |
| Architecture | 97% | Exemplary | Strongest area. |
| Maturity | 56% | Adequate — gated by M2 | Capped at Fair by a Critical contributor — resolve it before relying on this lens. |
| Readiness | 59% | Adequate — gated by P3 | Capped at Fair by a Critical contributor — resolve it before relying on this lens. |
| Security | 85% | Strong | Solid. |
Not included — 61 check(s) not relevant to this codebase
- AC1 Text alternatives — No web markup found — accessibility is not applicable to this repository.
- AC2 Forms & labels — No web markup found — accessibility is not applicable to this repository.
- AC3 Page structure — No web markup found — accessibility is not applicable to this repository.
- AC4 Keyboard semantics — No web markup found — accessibility is not applicable to this repository.
- AC5 ARIA correctness — No web markup found — accessibility is not applicable to this repository.
- AC6 Visual & motion safety — No web markup found — accessibility is not applicable to this repository.
- AC7 A11y enforcement — No web markup found — accessibility is not applicable to this repository.
- AX1 Captive dependencies — no DI registrations detected
- AX2 Stateful singletons — no singleton implementations detected
- AX6 Interface segregation — no public interfaces
- AX7 Slice cohesion — not applicable — not a vertical-slice architecture
- AX9 CQS / query purity — no CQRS query handlers detected — query purity is not applicable to this codebase
- AXB2 Runtime readiness — Advisory — this card reports evidence and never carries a score, so there is nothing missing here.
- C1 Data Protection — No personal data detected in the analyzed source — no PII-typed entity/column names (Email, FirstName, DateOfBirth, …), no ASP.NET Identity / user-account model, and no stored user credentials. GDPR data-protection controls are therefore N/A here. If this is intentional, record the no-PII posture in an ADR; if the app does process personal data, name those fields conventionally so this dimension activates.
- C2 Access Controls — No access-control surface detected in the analyzed source — no web/app surface to authorize (no HTTP API or web-UI project) and no authorization code at all (no [Authorize]/policies, no imperative guard methods). Access control is therefore N/A here — this is a library/CLI, which is authorized by its CALLER, not by itself. If this codebase grows request handlers, the dimension reactivates and a default-deny posture is expected then.
- C3 Audit Trail — No personal data detected in the analyzed source — no PII-typed entity/column names (Email, FirstName, DateOfBirth, …), no ASP.NET Identity / user-account model, and no stored user credentials. GDPR data-protection controls are therefore N/A here. If this is intentional, record the no-PII posture in an ADR; if the app does process personal data, name those fields conventionally so this dimension activates.
- C4 Data Retention — No personal data detected in the analyzed source — no PII-typed entity/column names (Email, FirstName, DateOfBirth, …), no ASP.NET Identity / user-account model, and no stored user credentials. GDPR data-protection controls are therefore N/A here. If this is intentional, record the no-PII posture in an ADR; if the app does process personal data, name those fields conventionally so this dimension activates.
- C5 Data-Subject Rights — No personal data detected in the analyzed source — no PII-typed entity/column names (Email, FirstName, DateOfBirth, …), no ASP.NET Identity / user-account model, and no stored user credentials. GDPR data-protection controls are therefore N/A here. If this is intentional, record the no-PII posture in an ADR; if the app does process personal data, name those fields conventionally so this dimension activates.
- D1 Cyclomatic Complexity — Most of this repository's production source (.fs) had no cyclomatic complexity computed for it, so cyclomatic complexity was not measured — whatever else this pass did read is not this repository's complexity. Not scored: no method bodies were exposed for those file kinds by any language model this pass could load. This is a gap in the analysis run, not a finding about this repository.
- D12 Dependency Hygiene — Dependency hygiene not measured — no packages were read
- D15 Churn × Complexity Hotspots — complexity unreadable for .fs — churn × complexity hotspots could not be measured
- D18 Solution Shape — D18 scores the shape of a C#/VB .NET solution, but this repository's production source is mostly .fs, which the C#/VB workspace does not load — the projects that loaded are an immaterial minority, so solution shape was not assessed for this repository. Not scored — this is a gap in the analyzer's reach, not a verdict about this repository.
- D2 Cognitive Complexity — Most of this repository's production source (.fs) had no cognitive complexity computed for it, so cognitive complexity was not measured — whatever else this pass did read is not this repository's complexity. Not scored: no method bodies were exposed for those file kinds by any language model this pass could load. This is a gap in the analysis run, not a finding about this repository.
- D20 ADR Quality — N/A — ADRs are expected on deployable products with a user-facing host, not consumed libraries; no ADR log is required here.
- D22 Internal API Consistency — No exposed public API
- D23 Boundary Type-Coupling — single shared-core project — no cross-context coupling to assess
- D25 ADR Conformance — no ADRs to check
- D27 Navigability — No calls could be sampled, so navigability was not assessed — tracing effort is measured over resolved call sites and this target exposed none. Not scored — this is a gap in the analyzer's reach, not a verdict about this repository.
- D31 IaC & Container Security — No Infrastructure-as-Code or container manifests found (Dockerfile, Terraform, Kubernetes/Helm, CloudFormation); nothing to scan.
- D32 Data Compliance (PII/GDPR) — No PII/GDPR-handling patterns detected (p/gdpr ruleset) — no data-compliance surface to assess.
- D33 JS/npm Dependency Vulnerabilities — No JS/npm manifest or lockfile found outside build output (package.json, package-lock.json, yarn.lock, pnpm-lock.yaml, bun.lockb); no JS dependencies to scan.
- D36 Supply-chain Provenance & Signing — No CI/build pipeline found (.github/.forgejo/.gitea workflows, .gitlab-ci.yml, azure-pipelines*.yml, .pipelines/, .vsts-ci/, Jenkinsfile, .circleci); there is no build to attest provenance for.
- D37 Vulnerability-disclosure Policy — No vulnerability-disclosure policy file found (SECURITY.md/.markdown/.rst/.txt at root or under .github/.forgejo/.gitea/docs, .well-known/security.txt). A coordinated-disclosure policy may live off-repo, so this is not evidenced rather than failed.
- D38 OSV Dependency Vulnerabilities — No supported non-.NET dependency lockfile found outside build output (npm package-lock/yarn/pnpm/bun, Go go.mod, Rust Cargo.lock, Maven pom.xml, Gradle lockfiles, Python requirements.txt/poetry.lock/Pipfile.lock/pdm.lock, PHP composer.lock, Ruby Gemfile.lock, Elixir mix.lock, Dart pubspec.lock, Swift Package.resolved); nothing for OSV to scan. A NuGet-only repo stays NotApplicable — .NET CVEs are D30's domain.
- D40 Network Egress Confinement — No Kubernetes/orchestration workloads found in the repository manifests; network egress policy is a cluster-native control that may live at the platform/firewall layer, so there is nothing to assess here.
- D41 Kernel & Syscall Confinement — No Kubernetes/orchestration workloads found in the repository manifests; seccomp/AppArmor/SELinux confinement is a workload-level control, so there is nothing to assess here.
- D42 Runtime Threat Enforcement — No Kubernetes/orchestration workloads found in the repository manifests; runtime threat-detection and admission-control policy are cluster-level controls, so there is nothing to assess here.
- D6 Cohesion (LCOM4) — Cohesion (LCOM4) is measured over a C#/VB class graph, and this repository's production source is mostly .fs, which this pass does not read, so cohesion was not assessed for this repository. Not scored — this is a gap in the analyzer, not a finding about this repository.
- D7 Architectural Integrity — no checkable ADRs and no dependency cycles — architectural integrity not assessed
- D8 Code Coverage — Coverage not measured — no coverage collector is wired up
- DM1 Domain Modelling — applicable but not scored (2 of 3 signals for this style — below the bar we score at): 60 value object(s); 4 domain event(s)
- ED1 Event-Driven — not scored — this repository shows none of the 3 signals this check looks for
- ED5 Idempotency — no mutating command handlers or message consumers detected — idempotency check not applicable
- ES1 Event Sourcing — not scored — this repository shows none of the 3 signals this check looks for
- IC1 Incompleteness & stubs — not analysed — these correctness checks read a source model that was not loaded for this repository, because the repository is written in a language this check does not yet model, or because its projects failed to load. This is a gap in the analyzer, not a finding about this repository
- P12 CI test-gate honesty — Reported, not scored — and nothing was matched here. The coverage check applies to any stack, but the checks for excluded tests, skipped tests and sleep-based synchronisation currently recognise only some ecosystems' test-runner idioms, so on a repository built with another stack the zeros below mean 'not checked', not 'clean'.
- P2 Observability — Observability was not assessed: this check reads a source model that does not carry this repository's product — because the repository is written in a language this check does not yet model, or because its projects failed to load. Absence of a logging idiom this check recognises is NOT evidence that this repo lacks structured logging (it may log through its own ecosystem's logger). This is a gap in the analyzer, not a finding about this repository.
- P4 Deployment & Rollback — not evidenced — no deploy/rollback/approval signal in the repo; absence of evidence is not evidence of a manual release
- P5 DR & Backup — not evidenced — repo shows no backup/RTO/RPO controls; absence of evidence is not evidence of a working control
- P6 Release Hygiene — not evidenced — no changelog, version stamp or semver release tag in the repo
- P7 Outbound HTTP resilience — not applicable — this isn't a service/API/worker
- P8 Schema migrations — no EF Core usage detected
- P9 Domain vs controller coverage — no coverage report found on disk — produce a coverage report in a standard format (Cobertura — `dotnet test --collect:"XPlat Code Coverage"` with a `coverlet.collector` PackageReference) into the repo working tree before the scan — a CI step is the usual place, since the artefact is commonly gitignored, or wire coverage collection into CI, to enable this cross-layer check
- PF1 Benchmark discipline — Performance is assessed only for perf-relevant repos — a packaged library, one that ships benchmarks, or one already using allocation-aware APIs. This repo isn't one, so the Performance lens is not applicable and is excluded from the score.
- PF2 Allocation hygiene — Performance is assessed only for perf-relevant repos — a packaged library, one that ships benchmarks, or one already using allocation-aware APIs. This repo isn't one, so the Performance lens is not applicable and is excluded from the score.
- PF3 Async & latency hygiene — Performance is assessed only for perf-relevant repos — a packaged library, one that ships benchmarks, or one already using allocation-aware APIs. This repo isn't one, so the Performance lens is not applicable and is excluded from the score.
- S1 Web-Security Posture — No web surface detected in the analyzed source — no HTTP API or web-UI project (no controllers/minimal-API endpoints, no Razor/Blazor views) and no web middleware (HTTPS redirection, HSTS, security headers, cookies). Transport security, security headers, secure cookies, CSRF/input-validation and middleware-order controls are therefore N/A here — this is a library/CLI/worker, not a web app. Crypto hygiene was still checked and found nothing to flag. If this codebase becomes web-facing, the dimension reactivates automatically.
- SC1 Supply-chain hygiene — Advisory — this card reports evidence and never carries a score, so there is nothing missing here.
- X2 Cancellation propagation — no async methods found
- X6 Hand-rolled structured-format parsing — Reported, not scored — this card publishes what it found rather than grading it. Its content is the findings and the key metric above.
- X7 Silent fallback defaults — Reported, not scored — this card publishes what it found rather than grading it. Its content is the findings and the key metric above.
Appendix A — Findings (grouped)
Issue — 2 finding(s)
- High CVE: System.Net.Http 4.3.0
- High CVE: System.Text.RegularExpressions 4.3.0
Warning — 21 finding(s)
- Duplicated block (12 lines × 2) src/FsCheck.NUnit/FsCheckPropertyAttribute.fs:145
- Duplicated block (12 lines × 2) src/FsCheck.Xunit.v3/PropertyAttribute.fs:14
- Duplicated block (12 lines × 2) src/FsCheck.Xunit.v3/PropertyAttribute.fs:107
- Duplicated block (12 lines × 2) src/FsCheck.Xunit.v3/CheckExtensions.fs:35
- Duplicated block (8 lines × 2) examples/FsCheck.CSharpExamples/Program.cs:119
- Duplicated block (8 lines × 2) src/FsCheck.Xunit.v3/Runner.fs:9
- Duplicated block (8 lines × 2) src/FsCheck/Runner.fs:543
- Duplicated block (8 lines × 2) src/FsCheck/Internals.DefaultArbs.fs:280
- Low XML-doc coverage: FsCheck.CSharpExamples examples/FsCheck.CSharpExamples/FsCheck.CSharpExamples.csproj
- Low XML-doc coverage: CSharp.DocSnippets examples/CSharp.DocSnippets/CSharp.DocSnippets.csproj
- FileTooLong: FsCheck/Internals.DefaultArbs.fs src/FsCheck/Internals.DefaultArbs.fs:0
- FileTooLong: FsCheck/Runner.fs src/FsCheck/Runner.fs:0
- Duplicated block (12 lines × 3) src/FsCheck.NUnit/FsCheckPropertyAttribute.fs:83
- Duplicated block (12 lines × 3) src/FsCheck.NUnit/FsCheckPropertyAttribute.fs:121
- Duplicated block (17 lines × 3) src/FsCheck.NUnit/FsCheckPropertyAttribute.fs:47
- Duplicated block (13 lines × 2) src/FsCheck.Xunit.v3/PropertyAttribute.fs:124
- Duplicated block (9 lines × 2) examples/CSharp.DocSnippets/Properties.cs:75
- Duplicated block (8 lines × 4) examples/FsCheck.CSharpExamples/Program.cs:85
- Duplicated block (7 lines × 3) src/FsCheck/DefaultArbTypes.fs:87
- Duplicated block (6 lines × 2) src/FsCheck/Internals.Reflect.fs:237
- Coverage not measured — no coverage collector is wired up
Recommendation — 5 finding(s)
- complexity unreadable for .fs — churn × complexity hotspots could not be measured
- redundant comment examples/CSharp.DocSnippets/Properties.cs:45
- Scanner output unparseable — not a clean result
- Further orphaned files (smaller)
- IL efficiency: 1 authored method(s) exceed the IL budget examples/FsCheck.CSharpExamples/Program.cs:51
Info — 2 finding(s)
- Dependency hygiene not measured — no packages were read
- No exposed public API
Appendix B — Reproduction & audit trail
| Dimension | Tool | Version | Command | Findings | Raw output |
|---|---|---|---|---|---|
| D28 · Secrets (history) | gitleaks | — | gitleaks detect --no-git --no-banner --report-format json --report-path /dev/stdout --exit-code 0 --source . | 0 | — |
| D29 · Static Analysis (SAST) | semgrep | — | semgrep --config /opt/semgrep-rules/security-audit.yml --config /opt/semgrep-rules/owasp-top-ten.yml --json --quiet --timeout 0 --metrics off . | 0 | artifacts/raw/semgrep.json |
| D30 · Dependency Vulnerabilities | dotnet | — | dotnet list FsCheck.sln package --vulnerable --include-transitive --format json | 2 | artifacts/raw/dotnet-vulnerable.json |
| D31 · IaC & Container Security | trivy | — | trivy: not applicable — No Infrastructure-as-Code or container manifests found (Dockerfile, Terraform, Kubernetes/Helm, CloudFormation); nothing to scan. | 0 | — |
| D32 · Data Compliance (PII/GDPR) | semgrep | — | semgrep: not applicable — No PII/GDPR-handling patterns detected (p/gdpr ruleset) — no data-compliance surface to assess. | 0 | — |
| D33 · JS/npm Dependency Vulnerabilities | trivy | — | trivy: not applicable — No JS/npm manifest or lockfile found outside build output (package.json, package-lock.json, yarn.lock, pnpm-lock.yaml, bun.lockb); no JS dependencies to scan. | 0 | — |
| D36 · Supply-chain Provenance & Signing | provenance | — | provenance: not applicable — No CI/build pipeline found (.github/.forgejo/.gitea workflows, .gitlab-ci.yml, azure-pipelines*.yml, .pipelines/, .vsts-ci/, Jenkinsfile, .circleci); there is no build to attest provenance for. | 0 | — |
| D37 · Vulnerability-disclosure Policy | disclosure | — | disclosure: not applicable — No vulnerability-disclosure policy file found (SECURITY.md/.markdown/.rst/.txt at root or under .github/.forgejo/.gitea/docs, .well-known/security.txt). A coordinated-disclosure policy may live off-repo, so this is not evidenced rather than failed. | 0 | — |
| D38 · OSV Dependency Vulnerabilities | osv-scanner | — | osv-scanner: not applicable — No supported non-.NET dependency lockfile found outside build output (npm package-lock/yarn/pnpm/bun, Go go.mod, Rust Cargo.lock, Maven pom.xml, Gradle lockfiles, Python requirements.txt/poetry.lock/Pipfile.lock/pdm.lock, PHP composer.lock, Ruby Gemfile.lock, Elixir mix.lock, Dart pubspec.lock, Swift Package.resolved); nothing for OSV to scan. A NuGet-only repo stays NotApplicable — .NET CVEs are D30's domain. | 0 | — |
| D40 · Network Egress Confinement | runtime-hardening | — | runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; network egress policy is a cluster-native control that may live at the platform/firewall layer, so there is nothing to assess here. | 0 | — |
| D41 · Kernel & Syscall Confinement | runtime-hardening | — | runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; seccomp/AppArmor/SELinux confinement is a workload-level control, so there is nothing to assess here. | 0 | — |
| D42 · Runtime Threat Enforcement | runtime-hardening | — | runtime-hardening: not applicable — No Kubernetes/orchestration workloads found in the repository manifests; runtime threat-detection and admission-control policy are cluster-level controls, so there is nothing to assess here. | 0 | — |