Repository Analysis

zeromq/libzmq

ZeroMQ core engine in C++, implements ZMTP/3.1

4.9 Likely human-written View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of zeromq/libzmq, a C++ project with 10,956 GitHub stars. SynthScan v2.0 examined 95,833 lines of code across 528 source files, recording 438 pattern matches distributed across 7 syntactic categories. The overall adjusted score of 4.9 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).

4.9
Adjusted Score
4.9
Raw Score
100%
Time Factor
2026-07-26
Last Push
11.0K
Stars
C++
Language
95.8K
Lines of Code
528
Files
438
Pattern Hits
2026-08-02
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

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

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 54LOW 384

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 438 distinct pattern matches across 7 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.

Over-Commented Block381 hits · 325 pts
SeverityFileLineSnippetContext
LOWCMakeLists.txt1341 set(PDB_OUTPUT_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/bin")COMMENT
LOWDoxygen.cfg1# Doxyfile 1.8.11COMMENT
LOWDoxygen.cfg21# that follow. The default is UTF-8 which is also the encoding used for all textCOMMENT
LOWDoxygen.cfg61# option can be useful when feeding doxygen a huge amount of source files, whereCOMMENT
LOWDoxygen.cfg81# Esperanto, Farsi (Persian), Finnish, French, German, Greek, Hungarian,COMMENT
LOWDoxygen.cfg101# Note: If both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, theCOMMENT
LOWDoxygen.cfg121# The default value is: NO.COMMENT
LOWDoxygen.cfg141# Stripping is only done if one of the specified strings matches the left-handCOMMENT
LOWDoxygen.cfg161# If the SHORT_NAMES tag is set to YES, doxygen will generate much shorter (butCOMMENT
LOWDoxygen.cfg201# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sourcesCOMMENT
LOWDoxygen.cfg221# The default value is: YES.COMMENT
LOWDoxygen.cfg241BUILTIN_STL_SUPPORT = YESCOMMENT
LOWDoxygen.cfg261# member in the group (if any) for the other members of the group. By defaultCOMMENT
LOWDoxygen.cfg281SUBGROUPING = YESCOMMENT
LOWDoxygen.cfg301COMMENT
LOWDoxygen.cfg321# is 0..9, the default is 0, corresponding to a cache size of 2^16=65536COMMENT
LOWDoxygen.cfg361# locally in source files will be included in the documentation. If set to NO,COMMENT
LOWDoxygen.cfg381# The default value is: NO.COMMENT
LOWDoxygen.cfg401# documentation blocks found inside the body of a function. If set to NO, theseCOMMENT
LOWDoxygen.cfg421CASE_SENSE_NAMES = YESCOMMENT
LOWDoxygen.cfg461COMMENT
LOWDoxygen.cfg481# Note: If SORT_BRIEF_DOCS is set to NO this option is ignored for sorting briefCOMMENT
LOWDoxygen.cfg501# list.COMMENT
LOWDoxygen.cfg541# The MAX_INITIALIZER_LINES tag determines the maximum number of lines that theCOMMENT
LOWDoxygen.cfg561# (if specified).COMMENT
LOWDoxygen.cfg581FILE_VERSION_FILTER =COMMENT
LOWDoxygen.cfg601# LATEX_BIB_STYLE. To use this feature you need bibtex and perl available in theCOMMENT
LOWDoxygen.cfg621# Tip: Turn warnings on while writing the documentation.COMMENT
LOWDoxygen.cfg641# This WARN_NO_PARAMDOC option can be enabled to get warnings for functions thatCOMMENT
LOWDoxygen.cfg661# The default value is: $file:$line: $text.COMMENT
LOWDoxygen.cfg681INPUT = include \COMMENT
LOWDoxygen.cfg701# need to set EXTENSION_MAPPING for the extension otherwise the files are notCOMMENT
LOWDoxygen.cfg721# The EXCLUDE tag can be used to specify files and/or directories that should beCOMMENT
LOWDoxygen.cfg741# Note that the wildcards are matched against the file with absolute path, so toCOMMENT
LOWDoxygen.cfg761EXAMPLE_PATH = tests perfCOMMENT
LOWDoxygen.cfg781IMAGE_PATH =COMMENT
LOWDoxygen.cfg801COMMENT
LOWDoxygen.cfg821COMMENT
LOWDoxygen.cfg841#---------------------------------------------------------------------------COMMENT
LOWDoxygen.cfg861# The default value is: YES.COMMENT
LOWDoxygen.cfg881# The default value is: YES.COMMENT
LOWDoxygen.cfg901# To use it do the following:COMMENT
LOWDoxygen.cfg921# The default value is: YES.COMMENT
LOWDoxygen.cfg941COLS_IN_ALPHA_INDEX = 4COMMENT
LOWDoxygen.cfg961# relative path is entered the value of OUTPUT_DIRECTORY will be put in front ofCOMMENT
LOWDoxygen.cfg981# the setting GENERATE_TREEVIEW). It is highly recommended to start with aCOMMENT
LOWDoxygen.cfg1001# This tag requires that the tag GENERATE_HTML is set to YES.COMMENT
LOWDoxygen.cfg1021# standard style sheet and is therefore more robust against future updates.COMMENT
LOWDoxygen.cfg1041# will adjust the colors in the style sheet and background images according toCOMMENT
LOWDoxygen.cfg1061# gradually make the output lighter, whereas values above 100 make the outputCOMMENT
LOWDoxygen.cfg1081# page has loaded.COMMENT
LOWDoxygen.cfg1101# generated that can be used as input for Apple's Xcode 3 integrated developmentCOMMENT
LOWDoxygen.cfg1121COMMENT
LOWDoxygen.cfg1141COMMENT
LOWDoxygen.cfg1161COMMENT
LOWDoxygen.cfg1181COMMENT
LOWDoxygen.cfg1201# This tag requires that the tag GENERATE_HTMLHELP is set to YES.COMMENT
LOWDoxygen.cfg1221# The QHP_NAMESPACE tag specifies the namespace to use when generating Qt HelpCOMMENT
LOWDoxygen.cfg1241# filters).COMMENT
LOWDoxygen.cfg1261# The QHG_LOCATION tag can be used to specify the location of Qt'sCOMMENT
321 more matches not shown…
Decorative Section Separators46 hits · 118 pts
SeverityFileLineSnippetContext
MEDIUMCMakeLists.txt758# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt867# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt882# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt893# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt905# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt927# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt1213# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt1253# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt1333# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt1687# -----------------------------------------------------------------------------COMMENT
MEDIUMCMakeLists.txt1710# -----------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1828#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1830#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1840#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1842#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg16#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg18#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg328#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg330#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg606#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg608#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg671#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg673#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg839#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg841#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg925#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg927#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg951#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg953#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1495#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1497#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1664#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1666#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1730#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1732#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1774#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1776#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1801#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1803#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1878#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1880#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1956#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg1958#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg2008#---------------------------------------------------------------------------COMMENT
MEDIUMDoxygen.cfg2010#---------------------------------------------------------------------------COMMENT
MEDIUM.readthedocs.yaml33 # ------------COMMENT
AI Slop Vocabulary5 hits · 10 pts
SeverityFileLineSnippetContext
MEDIUMDoxygen.cfg1011# it is more robust and this tag (HTML_STYLESHEET) will in the future becomeCOMMENT
MEDIUMDoxygen.cfg1021# standard style sheet and is therefore more robust against future updates.COMMENT
LOWconfig.sh80 # Linux headers are redefined, so we can't just add -I to the whole dirCOMMENT
MEDIUMbuilds/android/android_build_helper.sh49# aforementioned upstream repository for the benefit of other users.COMMENT
MEDIUMsrc/gssapi_mechanism_base.hpp98 // If true, use gss to encrypt messages. If false, only utilize gss for auth.COMMENT
Slop Phrases3 hits · 9 pts
SeverityFileLineSnippetContext
MEDIUMDoxygen.cfg696# If the value of the INPUT tag contains directories, you can use theCOMMENT
MEDIUMDoxygen.cfg737# If the value of the INPUT tag contains directories, you can use theCOMMENT
MEDIUMDoxygen.cfg763# If the value of the EXAMPLE_PATH tag contains directories, you can use theCOMMENT
Self-Referential Comments1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUMbuilds/android/android_build_helper.sh466# Initialize env variable XXX_ROOT, given dependency name "xxx".COMMENT
Redundant / Tautological Comments1 hit · 2 pts
SeverityFileLineSnippetContext
LOWbuilds/android/build.sh35# Set this to 'no', to enable verbose ./configureCOMMENT
Example Usage Blocks1 hit · 2 pts
SeverityFileLineSnippetContext
LOWperf/generate_csv.sh8# Usage example:COMMENT