Repository Analysis

chriskohlhoff/asio

Asio C++ Library

6.1 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of chriskohlhoff/asio, a C++ project with 6,171 GitHub stars. SynthScan v2.0 examined 265,952 lines of code across 1217 source files, recording 1623 pattern matches distributed across 4 syntactic categories. The overall adjusted score of 6.1 places this repository in the Low AI signal 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).

6.1
Adjusted Score
6.1
Raw Score
100%
Time Factor
2026-07-08
Last Push
6.2K
Stars
C++
Language
266.0K
Lines of Code
1.2K
Files
1.6K
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

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 14LOW 1609

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 1623 distinct pattern matches across 4 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 Block1599 hits · 1568 pts
SeverityFileLineSnippetContext
LOWautogen.sh1#!/bin/shCOMMENT
LOWinclude/asio.hpp1//COMMENT
LOWinclude/asio.hpp21#include "asio/append.hpp"COMMENT
LOWinclude/asio.hpp41#include "asio/basic_socket_iostream.hpp"COMMENT
LOWinclude/asio.hpp61#include "asio/cancel_after.hpp"COMMENT
LOWinclude/asio.hpp81#include "asio/disposition.hpp"COMMENT
LOWinclude/asio.hpp101#include "asio/generic/basic_endpoint.hpp"COMMENT
LOWinclude/asio.hpp121#include "asio/ip/network_v6.hpp"COMMENT
LOWinclude/asio.hpp141#include "asio/is_write_buffered.hpp"COMMENT
LOWinclude/asio.hpp161#include "asio/read_at.hpp"COMMENT
LOWinclude/asio.hpp181#include "asio/system_error.hpp"COMMENT
LOWinclude/asio.hpp201#include "asio/writable_pipe.hpp"COMMENT
LOWinclude/asio/signal_set_base.hpp1//COMMENT
LOWinclude/asio/disposition.hpp1//COMMENT
LOWinclude/asio/consign.hpp1//COMMENT
LOWinclude/asio/detached.hpp1//COMMENT
LOWinclude/asio/static_thread_pool.hpp1//COMMENT
LOWinclude/asio/system_timer.hpp1//COMMENT
LOWinclude/asio/streambuf.hpp1//COMMENT
LOWinclude/asio/basic_stream_socket.hpp1//COMMENT
LOWinclude/asio/thread_pool.hpp1//COMMENT
LOWinclude/asio/thread_pool.hpp1081#if defined(ASIO_HEADER_ONLY)COMMENT
LOWinclude/asio/basic_socket_iostream.hpp1//COMMENT
LOWinclude/asio/dispatch.hpp1//COMMENT
LOWinclude/asio/write_at.hpp1//COMMENT
LOWinclude/asio/handler_continuation_hook.hpp1//COMMENT
LOWinclude/asio/any_io_executor.hpp1//COMMENT
LOWinclude/asio/system_error.hpp1//COMMENT
LOWinclude/asio/associated_executor.hpp1//COMMENT
LOWinclude/asio/post.hpp1//COMMENT
LOWinclude/asio/co_spawn.hpp1//COMMENT
LOWinclude/asio/serial_port.hpp1//COMMENT
LOWinclude/asio/deferred.hpp1//COMMENT
LOWinclude/asio/basic_deadline_timer.hpp1//COMMENT
LOWinclude/asio/basic_deadline_timer.hpp21COMMENT
LOWinclude/asio/serial_port_base.hpp1//COMMENT
LOWinclude/asio/serial_port_base.hpp21#if defined(ASIO_HAS_SERIAL_PORT) \COMMENT
LOWinclude/asio/serial_port_base.hpp161#undef ASIO_OPTION_STORAGECOMMENT
LOWinclude/asio/cancel_at.hpp1//COMMENT
LOWinclude/asio/awaitable.hpp1//COMMENT
LOWinclude/asio/awaitable.hpp141COMMENT
LOWinclude/asio/yield.hpp1//COMMENT
LOWinclude/asio/yield.hpp21#ifndef forkCOMMENT
LOWinclude/asio/fwd.hpp1//COMMENT
LOWinclude/asio/compose.hpp1//COMMENT
LOWinclude/asio/co_composed.hpp1//COMMENT
LOWinclude/asio/co_composed.hpp21COMMENT
LOWinclude/asio/packaged_task.hpp1//COMMENT
LOWinclude/asio/cancellation_signal.hpp1//COMMENT
LOWinclude/asio/cancellation_signal.hpp241#include "asio/detail/pop_options.hpp"COMMENT
LOWinclude/asio/associated_immediate_executor.hpp1//COMMENT
LOWinclude/asio/basic_waitable_timer.hpp1//COMMENT
LOWinclude/asio/basic_waitable_timer.hpp21#include "asio/any_io_executor.hpp"COMMENT
LOWinclude/asio/buffered_read_stream.hpp1//COMMENT
LOWinclude/asio/completion_condition.hpp1//COMMENT
LOWinclude/asio/is_applicable_property.hpp1//COMMENT
LOWinclude/asio/execution.hpp1//COMMENT
LOWinclude/asio/execution.hpp21#include "asio/execution/blocking.hpp"COMMENT
LOWinclude/asio/io_context_strand.hpp1//COMMENT
LOWinclude/asio/this_coro.hpp1//COMMENT
1539 more matches not shown…
Decorative Section Separators13 hits · 39 pts
SeverityFileLineSnippetContext
MEDIUMsrc/tools/handlerviz.pl35#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerviz.pl134#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerviz.pl147#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerviz.pl240#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerviz.pl372#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerlive.pl23#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerlive.pl70#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlerlive.pl85#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlertree.pl23#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlertree.pl34#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlertree.pl50#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlertree.pl79#-------------------------------------------------------------------------------COMMENT
MEDIUMsrc/tools/handlertree.pl135#-------------------------------------------------------------------------------COMMENT
Redundant / Tautological Comments10 hits · 15 pts
SeverityFileLineSnippetContext
LOWrelease.pl72 # Open the files.COMMENT
LOWrelease.pl91 # Close the files and move the temporary output into position.COMMENT
LOWrelease.pl100 # Open the files.COMMENT
LOWrelease.pl123 # Close the files and move the temporary output into position.COMMENT
LOWrelease.pl132 # Open the files.COMMENT
LOWrelease.pl153 # Close the files and move the temporary output into position.COMMENT
LOWrelease.pl162 # Open the files.COMMENT
LOWrelease.pl183 # Close the files and move the temporary output into position.COMMENT
LOWboostify.pl117 # Open the files.COMMENT
LOWtsify.pl107 # Open the files.COMMENT
AI Slop Vocabulary1 hit · 3 pts
SeverityFileLineSnippetContext
MEDIUMsrc/examples/cpp11/porthopper/client.cpp73 // Time to switch to a new socket. To ensure seamless handover we willCOMMENT