AI Slop Code Risk Monitor

uswds/uswds

SlopCodeMonitor badge for uswds/uswds Adjusted legacy signal; badge bands: 25 / 50 / 75 (different from dashboard bands).

The U.S. Web Design System helps the federal government build fast, accessible, mobile-friendly websites.

1.9 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for uswds/uswds, a JavaScript project with 7,237 GitHub stars. SynthScan examined 95,328 lines of code across 1245 source files, recording 115 pattern matches distributed across 9 syntactic categories. The legacy adjusted pattern signal is 1.9 (Low pattern signal); it is not an authorship estimate.

Use the findings to ask whether maintainers can explain intent, verify dependencies, simplify unnecessary scaffolding, and focus review effort. Risk Payload v1 adds ownership, supply-chain, over-engineering, and review-effort vectors when available. These are prompts for human verification, not probabilities, security findings, or measured maintenance costs.

1.9
Adjusted Signal
1.9
Raw Pattern Score
100%
Time Factor
2026-10-31
Last Push
7.2K
Stars
JavaScript
Language
95.3K
Lines of Code
1.2K
Files
115
Pattern Hits
2026-10-31
Scan Date
0.00
HC Hit Rate

Risk Review · Payload v1

Use each vector to guide manual verification of the underlying findings.

Payload schema: 1.0.0 · Engine: 2.0.0 · Scoring: heuristic-density-v1 · Scan date: 2026-10-31.

Cognitive Ownership Risk 2.7/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 31 finding(s).

Hallucinated Dependency & Supply Chain Risk 3.9/100 · LOW

Are imports declared and package/API names verified? 67 finding(s).

Agent Over-Engineering Ratio 2.7/100 · LOW

Are wrappers, guards, and repeated structures necessary? 18 finding(s).

PR Review Velocity Impact 8.7/100 · LOW

Which changes need focused human review? 115 finding(s).

What These Metrics Mean

Adjusted Signal
Legacy pattern score normalized per 1,000 scanned lines and multiplied by the repository-level time factor. It is not an estimate of AI authorship.
Raw Pattern Score
Sum of severity- and context-weighted pattern findings before applying the time factor.
Time Factor
A coarse multiplier based on repository last-push metadata. It does not identify when individual code was written.
Pattern Hits
Count of configured pattern findings. Review each location and surrounding code before acting.
HC Hit Rate
High- and critical-severity findings per scanned file. Severity is a configured detector weight, not proof of a vulnerability or authorship.
Lines / Files
Scan coverage denominators used by the legacy normalized score.

Pattern-Signal History

This chart tracks the legacy adjusted pattern score across scan runs. Changes can reflect source changes, scan coverage, or detector/scoring versions; they do not measure AI adoption or prove that a team refactored code. Compare runs only when their scoring versions are compatible. The dashed line tracks the raw pattern-hit count.

Severity Breakdown

Groups findings by configured severity weight. Severity is not a confidence estimate, security rating, or proof that a package is missing. Verify imports against the project's manifests and inspect each finding in its local design context.

CRITICAL 0HIGH 4MEDIUM 19LOW 92

Directory Score Breakdown

This horizontal bar chart shows where configured pattern scores accumulate across directories. Treat the bars as locations to inspect, not as evidence of authorship or code quality. Use the file-level findings to decide whether a directory needs a focused ownership, dependency, complexity, or review check.

Pattern Findings

The scanner identified 115 distinct pattern matches across 9 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Fake / Example Data67 hits · 76 pts
SeverityFileLineSnippetContext
LOWpackages/usa-section/src/content/usa-section~dark.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-section/src/content/usa-section~dark.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-section/src/content/usa-section~light.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-section/src/content/usa-section~light.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-section/src/content/usa-section.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-section/src/content/usa-section.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-input-mask/src/index.js9const PLACEHOLDER = "placeholder";CODE
LOW…nput-mask/src/content/usa-input-mask-alphanumeric.json7 "placeholder": "___ ___",CODE
LOW…s/usa-input-mask/src/content/usa-input-mask-phone.json7 "placeholder": "___-___-____",CODE
LOW…ges/usa-input-mask/src/content/usa-input-mask-zip.json7 "placeholder": "_____-____",CODE
LOW…ges/usa-input-mask/src/content/usa-input-mask-ssn.json7 "placeholder": "___ __ ____",CODE
LOWpackages/usa-card/src/content/usa-card~media.json15 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~media.json15 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~media.json39 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~media.json39 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~media.json51 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~media.json51 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~flag.json15 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit."CODE
LOWpackages/usa-card/src/content/usa-card~flag.json15 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit."CODE
LOWpackages/usa-card/src/content/usa-card~flag.json27 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit."CODE
LOWpackages/usa-card/src/content/usa-card~flag.json27 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit."CODE
LOWpackages/usa-card/src/content/usa-card.json11 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card.json11 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~standard.json10 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~standard.json10 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~standard.json22 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~standard.json22 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit.\nFacilis earum tenetur quo cupiditate, eaque CODE
LOWpackages/usa-card/src/content/usa-card~standard.json34 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~standard.json34 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~standard.json58 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-card/src/content/usa-card~standard.json58 "content": "Lorem ipsum dolor sit amet consectetur adipisicing elit. Tempore possimus similique nemo odit doloremqCODE
LOWpackages/usa-alert/src/content/usa-alert~warning.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~warning.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~slim.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~slim.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~emergency.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~emergency.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~error.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~error.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert.json5 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~no-header.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~no-header.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~no-icon.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~no-icon.json3 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~success.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~success.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~info.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOWpackages/usa-alert/src/content/usa-alert~info.json4 "text": "Lorem ipsum dolor sit amet, <a class=\"usa-link\" href=\"javascript:void(0);\">consectetur adipiscing</a> eliCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json8 "section_heading": "Lorem ipsum dolor",CODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json9 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json9 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json14 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json14 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json20 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json20 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json26 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json26 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json32 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
LOW⚡…usa-in-page-navigation/src/usa-in-page-navigation.json32 "content": "<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Morbi commodo, ipsum sed pharetra gravidaCODE
7 more matches not shown…
Decorative Section Separators17 hits · 51 pts
SeverityFileLineSnippetContext
MEDIUMpackages/uswds-core/src/test/package-exports.spec.js75 // ── 1. Per-component subpath resolution ────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/package-exports.spec.js114 // ── 2. Cross-component API surfaces ────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/package-exports.spec.js154 // ── 3. Barrel exports ──────────────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js158 // ── window.uswdsPresent ─────────────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js172 // ── Component barrel ────────────────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js183 // ── Component behavior interface ────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js214 // ── No global leaks ─────────────────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js245 // ── End-to-end accordion interaction ────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js293 // ── Sourcemap sanity ────────────────────────────────────────────────────────COMMENT
MEDIUMpackages/uswds-core/src/test/dist-bundle.spec.js317 // ── uswds-init.js ES5 compliance ────────────────────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml47 // ── 1. Fetch all non-bot contributors ────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml60 // ── 2. Sanitisation helpers ──────────────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml96 // ── 3. Resolve display names and render table cells ─────────────COMMENT
MEDIUM.github/workflows/contributors.yml119 // ── 4. Build the table ───────────────────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml132 // ── 5. Splice into COMMUNITY.md ──────────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml146 // ── 6. Update contributor count ──────────────────────────────────COMMENT
MEDIUM.github/workflows/contributors.yml153 // ── 7. Check for a real diff before writing ───────────────────────COMMENT
Over-Commented Block20 hits · 20 pts
SeverityFileLineSnippetContext
LOW.coderabbit.yaml1# yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.jsonCOMMENT
LOW.coderabbit.yaml221 auto_review:COMMENT
LOW.agents/skills/uswds-code-review/references/gates.md281## 9. Error handling: guards, fallbacks, teardown symmetryCOMMENT
LOWpackages/usa-tooltip/src/styles/_usa-tooltip.scss1@use "uswds-core" as *;COMMENT
LOWpackages/uswds-core/src/js/events.js1module.exports = {COMMENT
LOWpackages/uswds-core/src/js/utils/behavior.js61 // Normalize event handlers to an array of arguments to be passed to either `addEventListener` orCOMMENT
LOWpackages/uswds-core/src/styles/_defaults.scss1// XXX This file has been deprecated in favor of _variables.scss, and is noCOMMENT
LOW…/uswds-core/src/styles/mixins/utilities/_disabled.scss1@use "../../functions/utilities/color" as *;COMMENT
LOW…swds-core/src/styles/mixins/utilities/_transition.scss1@use "sass:meta";COMMENT
LOW…ds-core/src/styles/mixins/helpers/add-link-styles.scss1@use "sass:meta";COMMENT
LOW…ds-core/src/styles/mixins/helpers/add-link-styles.scss21/// }COMMENT
LOW…ds-core/src/styles/functions/general/map-deep-get.scss21COMMENT
LOW…wds-core/src/styles/functions/general/map-collect.scss21}COMMENT
LOW…ds-core/src/styles/functions/color/advanced-color.scss1/*COMMENT
LOW…s-core/src/styles/functions/color/set-theme-color.scss61// @return false;COMMENT
LOW…-core/src/styles/functions/color/get-system-color.scss41 $color-family: general.smart-quote($color-family);COMMENT
LOW…s/uswds-core/src/styles/functions/color/luminance.scss41 @return math.div(math.round($lum * 1000), 1000);COMMENT
LOW…wds-core/src/styles/functions/color/is-color-dark.scss21}COMMENT
LOW…s/uswds-core/src/styles/functions/utilities/color.scss81// @debug color(#f00);COMMENT
LOWpackages/usa-breadcrumb/src/styles/_usa-breadcrumb.scss201// Breadcrumb wrap (deprecated)COMMENT
AI Response Leakage4 hits · 20 pts
SeverityFileLineSnippetContext
HIGH…nts/skills/uswds-code-review/references/calibration.md27- **Builds a test harness before approving** (#6048): "I've created a branch on uswds-sandbox `test-uswds-breakpoints-60CODE
HIGH…nts/skills/uswds-code-review/references/calibration.md42- #6715: *"Looking at the cjs plugin you wrote, I'm going to suggest a follow-up PR once and issue so we can remove the CODE
HIGH…nts/skills/uswds-code-review/references/calibration.md319- #6715: *"I'm going to suggest a follow-up PR once and issue so we can remove the UMD-related checks. **I'll create theCODE
HIGH…nts/skills/uswds-code-review/references/calibration.md320- #6700: *"it would probably be helpful to add a description to populate the comment body. **I'll create an issue for itCODE
Structural Annotation Overuse3 hits · 4 pts
SeverityFileLineSnippetContext
LOWCONTRIBUTING.md244### Step 1: Open an issueCOMMENT
LOWCONTRIBUTING.md254### Step 2: Open a pull requestCOMMENT
LOWCONTRIBUTING.md267### Step 3: Link issue to pull requestCOMMENT
Self-Referential Comments1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUM.coderabbit.yaml5# This file is the source of truth. Repository YAML outranks both the repositoryCOMMENT
Modern AI Meta-Vocabulary1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUM…nts/skills/uswds-code-review/references/calibration.md178### 13. Developer-experience guardrails for consumersCOMMENT
Redundant / Tautological Comments1 hit · 2 pts
SeverityFileLineSnippetContext
LOW.github/actions/build-diff/build-diff.sh70# Iterate through the list of all unique files found in both directories.COMMENT
Hyper-Verbose Identifiers1 hit · 1 pts
SeverityFileLineSnippetContext
LOWtasks/lint.js8function ignoreStylelintIgnoreWarnings(lintResults) {CODE