Repository Analysis

jgraph/drawio-mcp

3.6 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of jgraph/drawio-mcp, a JavaScript project with 4,812 GitHub stars. SynthScan v2.0 examined 19,219 lines of code across 41 source files, recording 52 pattern matches distributed across 3 syntactic categories. The overall adjusted score of 3.6 places this repository in the Likely human-written band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

3.6
Adjusted Score
3.6
Raw Score
100%
Time Factor
2026-07-09
Last Push
4.8K
Stars
JavaScript
Language
19.2K
Lines of Code
41
Files
52
Pattern Hits
2026-07-14
Scan Date
0.00
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 13LOW 39

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 52 distinct pattern matches across 3 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. 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 diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Decorative Section Separators13 hits · 39 pts
SeverityFileLineSnippetContext
MEDIUMshape-search/generate-index.js58// ── Create jsdom with minimal stubs ──────────────────────────────────────────COMMENT
MEDIUMshape-search/generate-index.js157// ── Load app.min.js ──────────────────────────────────────────────────────────COMMENT
MEDIUMshape-search/generate-index.js171// ── Intercept template entry calls ───────────────────────────────────────────COMMENT
MEDIUMshape-search/generate-index.js227// ── Build a minimal Sidebar and run initPalettes ─────────────────────────────COMMENT
MEDIUMshape-search/generate-index.js324// ── Run initPalettes to trigger all shape registrations ──────────────────────COMMENT
MEDIUMshape-search/generate-index.js339// ── Deduplicate by style string ──────────────────────────────────────────────COMMENT
MEDIUMshape-search/generate-index.js357// ── Derive titles for shapes that have tags but no title ────────────────────COMMENT
MEDIUMshape-search/generate-index.js411// ── Write output ─────────────────────────────────────────────────────────────COMMENT
MEDIUMshared/shape-search.js1// ── Shape search ─────────────────────────────────────────────────────────────COMMENT
MEDIUMmcp-app-server/src/shared.js1258// ─── Layout gate ─────────────────────────────────────────────────COMMENT
MEDIUMmcp-app-server/src/shared.js6437// ── Diagram validation ───────────────────────────────────────────────────────COMMENT
MEDIUMmcp-app-server/src/shared.js6581// ── Server ───────────────────────────────────────────────────────────────────COMMENT
MEDIUMmcp-app-server/src/shared.js6777 // ── search_shapes tool (only registered when shapeIndex is provided) ───────COMMENT
Over-Commented Block26 hits · 18 pts
SeverityFileLineSnippetContext
LOWmcp-tool-server/src/libavoid-pass.js1// Server-side libavoid edge-routing pass for open_drawio_xml.COMMENT
LOWmcp-tool-server/src/libavoid-pass.js21COMMENT
LOWmcp-tool-server/src/routing-core-cache.js1// Local cache for the shared libavoid routing core with CDN revalidation.COMMENT
LOWmcp-app-server/src/build-html.js61COMMENT
LOWmcp-app-server/src/index.js81 console.log("Inlining local drawio-mermaid from", process.env.MERMAID_PATH);COMMENT
LOWmcp-app-server/src/libavoid-versions.js1// ETag-versioned CDN URLs for the libavoid script block.COMMENT
LOWmcp-app-server/src/shared.js1401//COMMENT
LOWmcp-app-server/src/shared.js1561 // Nothing to lay out → bail (matches the old empty-elkGraph guard).COMMENT
LOWmcp-app-server/src/shared.js1841 var routes = AvoidRouting.computeRoutes(Avoid, vertices, edges);COMMENT
LOWmcp-app-server/src/shared.js2041 for (var i = 0; i < cellNodes.length; i++)COMMENT
LOWmcp-app-server/src/shared.js2481var animatedCellIds = {};COMMENT
LOWmcp-app-server/src/shared.js2501// fighting each other.COMMENT
LOWmcp-app-server/src/shared.js3321// recentVertexQueue holds the cells added in roughly the lastCOMMENT
LOWmcp-app-server/src/shared.js3341// Must match the CSS max-height on #diagram-container.streamingCOMMENT
LOWmcp-app-server/src/shared.js3361// big zoom-out. With limit=1 the camera simply pans between leavesCOMMENT
LOWmcp-app-server/src/shared.js3381// the floor up so rapid retargeting (LLM streaming partials everyCOMMENT
LOWmcp-app-server/src/shared.js3401// the new target scale can drop to at most this fraction of theCOMMENT
LOWmcp-app-server/src/shared.js3421// cells are being added (slow stream → longer transitions).COMMENT
LOWmcp-app-server/src/shared.js3761COMMENT
LOWmcp-app-server/src/shared.js3781// jumps; the camera then follows the smoothed target. Combined, theCOMMENT
LOWmcp-app-server/src/shared.js4001 // touch the toolbar / card border.COMMENT
LOWmcp-app-server/src/shared.js4641 updateZoomFitButtonUi();COMMENT
LOWmcp-app-server/src/shared.js4981 if (svg == null || !svg.isConnected)COMMENT
LOWmcp-app-server/src/shared.js5281// requested horizontal (postLayout=horizontalFlow or a mermaidCOMMENT
LOWmcp-app-server/src/shared.js5721 // restyles existing cells (no new geometry) — so the recent-vertexCOMMENT
LOWmcp-app-server/src/shared.js6241});COMMENT
Hyper-Verbose Identifiers13 hits · 13 pts
SeverityFileLineSnippetContext
LOWmcp-app-server/src/index.js162async function startStreamableHTTPServer()CODE
LOWmcp-app-server/src/shared.js655function expandEdgesToEndpointVertexIds(graph, ids)CODE
LOWmcp-app-server/src/shared.js796function firstMermaidDirectiveLine(text)CODE
LOWmcp-app-server/src/shared.js841function isMermaidHorizontalFlowchart(text)CODE
LOWmcp-app-server/src/shared.js1323function rememberMermaidConversion(text, xml)CODE
LOWmcp-app-server/src/shared.js2712function waitForPendingAnimationsToSettle()CODE
LOWmcp-app-server/src/shared.js3143function hideAndRedrawEdgesForMorph(graph, morphedIdSet)CODE
LOWmcp-app-server/src/shared.js3251function penDrawAllEdgesAfterMorph(graph)CODE
LOWmcp-app-server/src/shared.js3656function computeTransitionDuration(curS, curTx, curTy, tgtS, tgtTx, tgtTy, viewportSpan)CODE
LOWmcp-app-server/src/shared.js4526function enableViewerInteractivity(graph)CODE
LOWmcp-app-server/src/shared.js5254function computeTopAnchoredTransform(targetScale)CODE
LOWmcp-app-server/src/shared.js5303function captureOriginalCellGeometries(graph)CODE
LOWmcp-app-server/src/shared.js5323function restoreOriginalGeometriesToModel(model)CODE