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AI Slop Code RIsk Monitor

eclipse-vertx/vert.x

Vert.x is a tool-kit for building reactive applications on the JVM

5.5 Moderate pattern signal View on GitHub

Maintenance and Governance Review

This report summarizes scanner evidence for eclipse-vertx/vert.x, a Java project with 14,687 GitHub stars. SynthScan examined 256,429 lines of code across 1286 source files, recording 140 pattern matches distributed across 7 syntactic categories. The legacy adjusted pattern signal is 5.5 (Moderate 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.

5.5
Adjusted Signal
5.5
Raw Pattern Score
100%
Time Factor
2026-10-09
Last Push
14.7K
Stars
Java
Language
256.4K
Lines of Code
1.3K
Files
140
Pattern Hits
2026-10-12
Scan Date
0.09
HC Hit Rate

Risk Review · v3

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

Cognitive Ownership Risk 0.7/100 · LOW

Can maintainers explain intent, assumptions, and trade-offs? 27 finding(s).

Hallucinated Dependency & Supply Chain Risk 23.6/100 · LOW

Are imports declared and package/API names verified? 113 finding(s).

Agent Over-Engineering Ratio 0.0/100 · LOW

Are wrappers, guards, and repeated structures necessary? 2 finding(s).

PR Review Velocity Impact 19.9/100 · LOW

Which changes need focused human review? 140 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 111HIGH 0MEDIUM 0LOW 29

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 140 distinct pattern matches across 7 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.

Hallucination Indicators111 hits · 1375 pts
SeverityFileLineSnippetContext
CRITICAL…main/java/io/vertx/core/logging/Log4j2LogDelegate.java34 logger = (ExtendedLogger) org.apache.logging.log4j.LogManager.getLogger(name);CODE
CRITICAL…re/src/test/java/io/vertx/test/core/AsyncTestBase.java529 assertion.accept(org.assertj.core.api.Assertions.assertThat(actual));CODE
CRITICAL…re/src/test/java/io/vertx/test/core/AsyncTestBase.java552 assertion.accept(org.assertj.core.api.Assertions.assertThat(actual));CODE
CRITICAL…re/src/test/java/io/vertx/test/core/AsyncTestBase.java576 assertion.accept(org.assertj.core.api.Assertions.assertThat(actual));CODE
CRITICAL…core/src/test/java/io/vertx/tests/http/Http1xTest.java3544 io.netty.handler.codec.http.HttpVersion.valueOf("");CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java512 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java706 assertNullPointerException(() -> io.vertx.core.http.WebSocketFrame.binaryFrame(null, true));CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java707 assertNullPointerException(() -> io.vertx.core.http.WebSocketFrame.textFrame(null, true));CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java708 assertNullPointerException(() -> io.vertx.core.http.WebSocketFrame.continuationFrame(null, true));CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java891 frame = io.vertx.core.http.WebSocketFrame.binaryFrame(buff, false);CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java893 frame = io.vertx.core.http.WebSocketFrame.continuationFrame(buff, j == frames - 1);CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java899 frame = io.vertx.core.http.WebSocketFrame.textFrame(str, false);CODE
CRITICAL⚡…e/src/test/java/io/vertx/tests/http/WebSocketTest.java901 frame = io.vertx.core.http.WebSocketFrame.continuationFrame(buff, j == frames - 1);CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java1036 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java1073 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java1106 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java1169 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java1197 ws.writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(buff, true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java2538 .writeFrame(io.vertx.core.http.WebSocketFrame.pingFrame(Buffer.buffer(pingBody)))CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java2557 .writeFrame(io.vertx.core.http.WebSocketFrame.pingFrame(Buffer.buffer(pingBody)))CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java2569 .writeFrame(io.vertx.core.http.WebSocketFrame.pongFrame(Buffer.buffer(pingBody)))CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java2601 .writeFrame(io.vertx.core.http.WebSocketFrame.pongFrame(Buffer.buffer(pingBody)))CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java3483 ws.writeFrame(io.vertx.core.http.WebSocketFrame.textFrame(randomAlphaString(512), true));CODE
CRITICAL…e/src/test/java/io/vertx/tests/http/WebSocketTest.java4177 .writeFrame(io.vertx.core.http.WebSocketFrame.binaryFrame(body, true))CODE
CRITICAL⚡…/src/test/java/io/vertx/tests/http/HttpMethodTest.java156 assertSame(HttpMethod.fromNetty(io.netty.handler.codec.http.HttpMethod.valueOf("GET")), HttpMethod.GET);CODE
CRITICAL⚡…/src/test/java/io/vertx/tests/http/HttpMethodTest.java158 assertSame(HttpMethod.fromNetty(io.netty.handler.codec.http.HttpMethod.valueOf("POST")), HttpMethod.POST);CODE
CRITICAL⚡…/src/test/java/io/vertx/tests/http/HttpMethodTest.java160 assertSame(HttpMethod.fromNetty(io.netty.handler.codec.http.HttpMethod.valueOf("PUT")), HttpMethod.PUT);CODE
CRITICAL⚡…/src/test/java/io/vertx/tests/http/HttpMethodTest.java167 assertSame(HttpMethod.fromNetty(io.netty.handler.codec.http.HttpMethod.valueOf("QUERY")), HttpMethod.QUERY);CODE
CRITICAL⚡…/src/test/java/io/vertx/tests/http/HttpMethodTest.java169 assertEquals(HttpMethod.fromNetty(io.netty.handler.codec.http.HttpMethod.valueOf("foo")).name(), "foo");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java548 CharSequence name = io.vertx.core.http.HttpHeaders.createOptimized("heaDer");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java549 CharSequence vAlue = io.vertx.core.http.HttpHeaders.createOptimized("vAlue");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java550 CharSequence Value = io.vertx.core.http.HttpHeaders.createOptimized("Value");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java559 CharSequence name = io.vertx.core.http.HttpHeaders.createOptimized("heaDer");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java560 CharSequence vAlue = io.vertx.core.http.HttpHeaders.createOptimized("vAlue");CODE
CRITICAL⚡…test/java/io/vertx/tests/http/headers/HeadersTest.java561 CharSequence Value = io.vertx.core.http.HttpHeaders.createOptimized("Value");CODE
CRITICAL…test/java/io/vertx/tests/http/headers/HeadersTest.java590 mmap.add("header", Arrays.asList(io.vertx.core.http.HttpHeaders.createOptimized("value1"), io.vertx.core.http.HttpHeCODE
CRITICAL…test/java/io/vertx/tests/http/headers/HeadersTest.java596 mmap.set("header", Arrays.asList(io.vertx.core.http.HttpHeaders.createOptimized("value1"), io.vertx.core.http.HttpHeCODE
CRITICAL…s/http/compression/Http1xCompressionThresholdTest.java58 .addCompressor(io.vertx.tests.http.compression.CompressionConfig.gzip(6).compressor)CODE
CRITICAL…s/http/compression/Http1xCompressionThresholdTest.java80 .addCompressor(io.vertx.tests.http.compression.CompressionConfig.gzip(6).compressor)CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java46 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.gzip(1) });CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java47 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.gzip(6) });CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java48 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.gzip(9) });CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java50 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.zstd() });CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java52 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.snappy() });CODE
CRITICAL⚡…/vertx/tests/http/compression/HttpCompressionTest.java53 list.add(new Object[] { io.vertx.tests.http.compression.CompressionConfig.brotli() });CODE
CRITICAL…/vertx/tests/http/compression/HttpCompressionTest.java82 server = config.forServer().setCompression(new io.vertx.core.http.CompressionConfig().addCompressor(io.vertx.tests.hCODE
CRITICAL…test/java/io/vertx/tests/pool/SynchronizationTest.java126 Assume.assumeFalse(io.vertx.core.impl.Utils.isWindows());CODE
CRITICAL…test/java/io/vertx/tests/pool/SynchronizationTest.java223 int expected = io.netty.util.internal.InternalThreadLocalMap.lastVariableIndex();CODE
CRITICAL…test/java/io/vertx/tests/pool/SynchronizationTest.java235 assertEquals(expected, io.netty.util.internal.InternalThreadLocalMap.lastVariableIndex());CODE
CRITICAL⚡…re/src/test/java/io/vertx/benchmarks/HeadersUtils.java26 public static final CharSequence VERTX_HEADER = io.vertx.core.http.HttpHeaders.createOptimized("vert.x");CODE
CRITICAL⚡…re/src/test/java/io/vertx/benchmarks/HeadersUtils.java27 public static final CharSequence TEXT_PLAIN_HEADER = io.vertx.core.http.HttpHeaders.createOptimized("text/plain");CODE
CRITICAL⚡…re/src/test/java/io/vertx/benchmarks/HeadersUtils.java28 public static final CharSequence CONTENT_LENGTH_HEADER = io.vertx.core.http.HttpHeaders.createOptimized("20");CODE
CRITICAL⚡…re/src/test/java/io/vertx/benchmarks/HeadersUtils.java29 public static final CharSequence DATE_HEADER = io.vertx.core.http.HttpHeaders.createOptimized(DATE_FORMAT.format(new DCODE
CRITICAL⚡…va/io/vertx/benchmarks/HttpServerHandlerBenchmark.java188 private static final CharSequence RESPONSE_TYPE_PLAIN = io.vertx.core.http.HttpHeaders.createOptimized("text/plain");CODE
CRITICAL⚡…va/io/vertx/benchmarks/HttpServerHandlerBenchmark.java198 private static final CharSequence HELLO_WORLD_LENGTH = io.vertx.core.http.HttpHeaders.createOptimized("" + HELLO_WORLDCODE
CRITICAL⚡…va/io/vertx/benchmarks/HttpServerHandlerBenchmark.java199 private static final CharSequence SERVER = io.vertx.core.http.HttpHeaders.createOptimized("vert.x");CODE
CRITICAL⚡…va/io/vertx/benchmarks/HttpServerHandlerBenchmark.java200 private static final CharSequence DATE_STRING = io.vertx.core.http.HttpHeaders.createOptimized(java.time.format.DateTiCODE
CRITICAL…va/io/vertx/benchmarks/HttpServerHandlerBenchmark.java215 MultiMap headers = io.vertx.core.http.HttpHeaders.headers()CODE
CRITICAL…java/io/vertx/benchmarks/HeadersContainsBenchmark.java43 return nettySmallHeaders.contains(io.vertx.core.http.HttpHeaders.CONTENT_LENGTH.toString());CODE
CRITICAL…java/io/vertx/benchmarks/HeadersContainsBenchmark.java48 return nettySmallHeaders.contains(io.vertx.core.http.HttpHeaders.CLOSE.toString());CODE
51 more matches not shown…
Over-Commented Block16 hits · 16 pts
SeverityFileLineSnippetContext
LOW…c/test/java/io/vertx/test/core/AssertExpectations.java21// public static <T> Expectation<T> assertThat(String reason, Matcher<? super T> matcher) {COMMENT
LOW…rc/test/java/io/vertx/test/core/AsyncTestBaseTest.java141// long start = System.currentTimeMillis();COMMENT
LOW…rtx-core/src/test/java/io/vertx/tests/net/NetTest.java1741 }COMMENT
LOW…st/java/io/vertx/tests/http/SupportedVersionsTest.java301 new HttpServerConfig().setVersions(HttpVersion.HTTP_2),COMMENT
LOW…st/java/io/vertx/tests/http/SupportedVersionsTest.java321// public void testConfigH2H3() {COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ClientTest.java261// Future<Void> fut = req.connection().shutdown();COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ClientTest.java441COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ClientTest.java461// .compose(request -> requestCOMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ClientTest.java481//// filter(record -> record.getMessage().contains("DATA"))COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3TestClient.java381//COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3TestClient.java401// // Write the Header frame and send the FIN to mark the end of the request.COMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ServerTest.java501 // @TestCOMMENT
LOW…st/java/io/vertx/tests/http/http3/Http3ServerTest.java521// assertEquals(7, factoryCOMMENT
LOW…java/io/vertx/core/net/impl/quic/QuicEndpointImpl.java261// public void close(Completable<Void> completion) {COMMENT
LOW…va/io/vertx/core/streams/impl/MessagePassingQueue.java121 protected final long lowWaterMark;COMMENT
LOW…tx-core/src/main/java/examples/ParseToolsExamples.java81COMMENT
Verbosity Indicators4 hits · 9 pts
SeverityFileLineSnippetContext
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java886 // Step 1: Acquire and establish a connectionCOMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java896 // Step 2: Queue a second waiter (pool is at capacity)COMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java908 // Step 3: Recycle the first lease - dispatches connection to the queued waiterCOMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java911 // Step 4: Cancel the waiter after recycle dispatched it - should return falseCOMMENT
Structural Annotation Overuse4 hits · 9 pts
SeverityFileLineSnippetContext
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java886 // Step 1: Acquire and establish a connectionCOMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java896 // Step 2: Queue a second waiter (pool is at capacity)COMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java908 // Step 3: Recycle the first lease - dispatches connection to the queued waiterCOMMENT
LOW⚡…/test/java/io/vertx/tests/pool/ConnectionPoolTest.java911 // Step 4: Cancel the waiter after recycle dispatched it - should return falseCOMMENT
Fake / Example Data2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…x-core/src/test/java/io/vertx/tests/http/HttpTest.java2878 String body = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore CODE
LOW…x-core/src/test/java/io/vertx/tests/http/HttpTest.java2878 String body = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore CODE
Hyper-Verbose Identifiers2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…tx/core/http/impl/http1/Http1ServerRequestHandler.java36public class Http1ServerRequestHandler implements Handler<HttpServerRequest> {CODE
LOW…pl/http2/codec/Http2CodecClientChannelInitializer.java132 class UpgradeRequestHandler extends ChannelInboundHandlerAdapter {CODE
Slop Phrases1 hit · 2 pts
SeverityFileLineSnippetContext
LOW…ore/src/test/java/io/vertx/tests/ha/ComplexHATest.java80 // Don't forget to fail!COMMENT