AI Slop Code Risk Monitor

Tencent/MMKV

Name: Tencent/MMKV — C++ Code Quality & Security Review | AI Slop Code Risk Monitor
Creator: AI Slop Code Risk Monitor

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

An efficient, small mobile key-value storage framework developed by WeChat. Works on Android, iOS, macOS, Windows, POSIX, and OHOS.

2.5 Low pattern signal View on GitHub

Open-Source Code Quality, Security and Technical Debt Review

This report summarizes scanner evidence for Tencent/MMKV, a C++ project with 18,767 GitHub stars. SynthScan examined 65,635 lines of code across 424 source files, recording 148 pattern matches distributed across 5 syntactic categories. The legacy adjusted pattern signal is 2.5 (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.

2.5

Adjusted Signal

2.5

Raw Pattern Score

100%

Time Factor

2026-10-26

Last Push

18.8K

Stars

C++

Language

65.6K

Lines of Code

424

Files

148

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 11.6/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 146 finding(s).

Hallucinated Dependency & Supply Chain Risk 0.0/100 · LOW

Are imports declared and package/API names verified? 0 finding(s).

Agent Over-Engineering Ratio 0.3/100 · LOW

Are wrappers, guards, and repeated structures necessary? 3 finding(s).

PR Review Velocity Impact 11.9/100 · LOW

Which changes need focused human review? 148 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 0MEDIUM 9LOW 139

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 148 distinct pattern matches across 5 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.

Over-Commented Block137 hits · 137 pts

Severity	File	Line	Snippet	Context
LOW	POSIX/CMakeLists.txt	1	#	COMMENT
LOW	POSIX/demo/CMakeLists.txt	1	#	COMMENT
LOW	POSIX/demo/TestRemoveStorage.cpp	1	// Link the static core so syscall hooks affect only this test executable.	COMMENT
LOW	POSIX/demo/TestInterProcessLock.cpp	21	#include <MMKV/MMKV.h>	COMMENT
LOW	POSIX/demo/TestFileCopy.cpp	1	#undef NDEBUG	COMMENT
LOW	POSIX/demo/demo.cpp	21	#include <MMKV/MMKV.h>	COMMENT
LOW	POSIX/demo/demo.cpp	1121	// string key = "keyyy";	COMMENT
LOW	POSIX/demo/TestSingleKeyIV.cpp	1	// Exercise single-key overwrites through the public API and inspect the	COMMENT
LOW	POSIX/demo/UnitTest.cpp	21	#include <MMKV/MMKV.h>	COMMENT
LOW	POSIX/golang/CMakeLists.txt	1	#	COMMENT
LOW	POSIX/src/CMakeLists.txt	1	#	COMMENT
LOW	Core/MMKVLog.h	21	#ifndef MMKV_MMKVLOG_H	COMMENT
LOW	Core/MMKVLog.h	41		COMMENT
LOW	Core/MMKVLog.h	61	# endif	COMMENT
LOW	Core/MMBuffer.cpp	21	#define NOMINMAX // undefine max/min	COMMENT
LOW	Core/MMKV.h	21	#ifndef MMKV_MMKV_H	COMMENT
LOW	Core/MMKV.h	601	// keepSpace: remove all keys but keep the file size not changed, running faster	COMMENT
LOW	Core/MMKV_Android.cpp	21	#include "MMKV.h"	COMMENT
LOW	Core/CMakeLists.txt	1	#	COMMENT
LOW	Core/MMKV.cpp	21	#include "CodedInputData.h"	COMMENT
LOW	Core/MMKV.cpp	41	#include <cstring>	COMMENT
LOW	Core/MMKVMetaInfo.hpp	101	#endif	COMMENT
LOW	Core/PBEncodeItem.hpp	101	#endif	COMMENT
LOW	Core/ThreadLock.h	21	#ifndef MMKV_THREADLOCK_H	COMMENT
LOW	Core/MiniPBCoder.cpp	21	#include "MiniPBCoder.h"	COMMENT
LOW	Core/MiniPBCoder_OSX.cpp	21	#include "MiniPBCoder.h"	COMMENT
LOW	Core/MMKVPredef.h	21	#ifndef MMKV_SRC_MMKVPREDEF_H	COMMENT
LOW	Core/MMKVPredef.h	41	#endif	COMMENT
LOW	Core/MMKVPredef.h	61	# define MMKV_ANDROID	COMMENT
LOW	Core/MMKVPredef.h	81	# endif	COMMENT
LOW	Core/MMKVPredef.h	121	# ifndef MMKV_EMBED_ZLIB	COMMENT
LOW	Core/MMKVPredef.h	281	# ifndef likely	COMMENT
LOW	Core/CodedInputDataCrypt.cpp	21	#include "CodedInputDataCrypt.h"	COMMENT
LOW	Core/KeyValueHolder.h	21	#ifndef KeyValueHolder_hpp	COMMENT
LOW	Core/MMKV_OSX.cpp	21	#include "MMKVPredef.h"	COMMENT
LOW	Core/MemoryFile_Linux.cpp	21	#include "MemoryFile.h"	COMMENT
LOW	Core/ScopedLock.hpp	61	#include <type_traits>	COMMENT
LOW	Core/MMKV_IO.cpp	21		COMMENT
LOW	Core/MMKV_IO.cpp	41	#include <ctime>	COMMENT
LOW	Core/MiniPBCoder.h	21	#ifndef MMKV_MINIPBCODER_H	COMMENT
LOW	Core/MemoryFile.cpp	21	#include "MemoryFile.h"	COMMENT
LOW	Core/fakeinclude/MMKVCore/ThreadLock.h	21	#include "../../ThreadLock.h"	COMMENT
LOW	Core/fakeinclude/MMKVCore/ScopedLock.hpp	21	#include "../../ScopedLock.hpp"	COMMENT
LOW	Core/crc32/CMakeLists.txt	1	#	COMMENT
LOW	Core/crc32/crc32_armv8.cpp	41	static inline uint32_t _crc32Wrap(uint32_t crc, const uint8_t *buf, size_t len) {	COMMENT
LOW	Core/crc32/Checksum.h	61	// getauxval(AT_HWCAP) in OHOS returns wrong value, we just assume all OHOS device have crc32 instr	COMMENT
LOW	Core/crc32/zlib/zconf.h	1	/* zconf.h -- configuration of the zlib compression library	COMMENT
LOW	Core/crc32/zlib/zconf.h	21	#define WINDOWS	COMMENT
LOW	Core/crc32/zlib/zconf.h	41	#define MAXSEG_64K	COMMENT
LOW	Core/crc32/zlib/zconf.h	61	#define STDC	COMMENT
LOW	Core/crc32/zlib/zconf.h	81	#define z_const const	COMMENT
LOW	Core/crc32/zlib/zconf.h	141		COMMENT
LOW	Core/crc32/zlib/zconf.h	161	#define FAR _far	COMMENT
LOW	Core/crc32/zlib/zconf.h	181	#ifdef ZLIB_DLL	COMMENT
LOW	Core/crc32/zlib/zconf.h	201	#define ZEXPORT WINAPI	COMMENT
LOW	Core/crc32/zlib/zconf.h	221		COMMENT
LOW	Core/crc32/zlib/zconf.h	261	#endif	COMMENT
LOW	Core/crc32/zlib/zconf.h	281	#define Z_HAVE_UNISTD_H	COMMENT
LOW	Core/crc32/zlib/zconf.h	301	#ifndef Z_SOLO	COMMENT
LOW	Core/crc32/zlib/zconf.h	321	#include <unistd.h> /* for SEEK_, off_t, and _LFS64_LARGEFILE /	COMMENT
77 more matches not shown…

Self-Referential Comments7 hits · 21 pts

Severity	File	Line	Snippet	Context
MEDIUM	flutter/mmkv_ios/pubspec.yaml	28	# The following section is specific to Flutter.	COMMENT
MEDIUM	flutter/mmkv_android/pubspec.yaml	28	# The following section is specific to Flutter.	COMMENT
MEDIUM	flutter/mmkv/pubspec.yaml	43	# The following section is specific to Flutter.	COMMENT
MEDIUM	flutter/mmkv/example/pubspec.yaml	38	# The following section is specific to Flutter.	COMMENT
MEDIUM	flutter/mmkv_ohos/pubspec.yaml	32	# The following section is specific to Flutter packages.	COMMENT
MEDIUM	flutter/mmkv_win32/pubspec.yaml	27	# The following section is specific to Flutter packages.	COMMENT
MEDIUM	flutter/mmkv_linux/pubspec.yaml	27	# The following section is specific to Flutter packages.	COMMENT

Excessive Try-Catch Wrapping2 hits · 3 pts

Severity	File	Line	Snippet	Context
LOW	Script/dumpJavaSignature.py	129	except Exception as e:	CODE
MEDIUM	Script/dumpJavaSignature.py	144	print(f"Error: {e}")	CODE

Slop Phrases1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	flutter/mmkv/example/pubspec.yaml	42	# included with your application, so that you can use the icons in	COMMENT

Hyper-Verbose Identifiers1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	…y/src/ohosTest/ets/testrunner/OpenHarmonyTestRunner.ts	27	async function addAbilityMonitorCallback(err: any) {	CODE